Merge tag 'OTP-19.0' into sverker/19/binary_to_atom-utf8-crash/ERL-474/OTP-14590

120 files changed, 7438 insertions, 6290 deletions

diff --git a/lib/snmp/src/Makefile b/lib/snmp/src/Makefile
index 341107ce30..39ea5f74db 100644
--- a/lib/snmp/src/Makefile
+++ b/lib/snmp/src/Makefile
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2009. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/agent/Makefile b/lib/snmp/src/agent/Makefile
index beed696648..2943a4d550 100644
--- a/lib/snmp/src/agent/Makefile
+++ b/lib/snmp/src/agent/Makefile
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 1996-2012. All Rights Reserved.
+# Copyright Ericsson AB 1996-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/agent/depend.mk b/lib/snmp/src/agent/depend.mk
index b4ca8a2d9f..8eba50fa3b 100644
--- a/lib/snmp/src/agent/depend.mk
+++ b/lib/snmp/src/agent/depend.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2013. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/agent/modules.mk b/lib/snmp/src/agent/modules.mk
index 34765475b9..0f8615588a 100644
--- a/lib/snmp/src/agent/modules.mk
+++ b/lib/snmp/src/agent/modules.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2013. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/agent/snmp_community_mib.erl b/lib/snmp/src/agent/snmp_community_mib.erl
index 7bdd500727..9fd7b30f9f 100644
--- a/lib/snmp/src/agent/snmp_community_mib.erl
+++ b/lib/snmp/src/agent/snmp_community_mib.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -31,6 +32,7 @@
 -include("snmpa_internal.hrl").
 -include("SNMP-COMMUNITY-MIB.hrl").
 -include("SNMP-TARGET-MIB.hrl").
+-include("SNMPv2-TM.hrl").
 -include("SNMPv2-TC.hrl").
 -include("snmp_types.hrl").
 
@@ -129,10 +131,11 @@ read_community_config_files(Dir) ->
 				   [FileName, D, Reason]),
 		       ok 
 	     end,
-    Filter   = fun(Comms) -> Comms end,
-    Check    = fun(Entry) -> check_community(Entry) end,
+    Order    = fun snmp_conf:no_order/2,
+    Filter   = fun snmp_conf:no_filter/1,
+    Check    = fun(Entry, State) -> {check_community(Entry), State} end,
     [Comms]  = 
-	snmp_conf:read_files(Dir, [{Gen, Filter, Check, "community.conf"}]),
+	snmp_conf:read_files(Dir, [{FileName, Gen, Order, Check, Filter}]),
     Comms.
 
 check_community({Index, CommunityName, SecName, CtxName, TransportTag}) ->
@@ -192,7 +195,7 @@ add_community(Idx, CommName, SecName, EngineId, CtxName, TransportTag) ->
     do_add_community(Community).
 
 do_add_community(Community) ->
-    case (catch check_community(Community)) of
+    try check_community(Community) of
 	{ok, Row} ->
 	    Key = element(1, Row),
 	    case table_cre_row(snmpCommunityTable, Key, Row) of
@@ -201,11 +204,12 @@ do_add_community(Community) ->
 		    {ok, Key};
 		false ->
 		    {error, create_failed}
-	    end;
+	    end
+    catch
 	{error, Reason} ->
 	    {error, Reason};
-	Error ->
-	    {error, Error}
+	Class:Reason ->
+	    {error, {Class, Reason, erlang:get_stacktrace()}}
     end.
 
 %% FIXME: does not work with mnesia
@@ -243,6 +247,10 @@ gc_tabs() ->
 %%-----------------------------------------------------------------
 community2vacm(Community, Addr) ->
     Idxs = ets:lookup(snmp_community_cache, Community),
+    ?vtrace("community2vacm ->~n"
+	    "  Community: ~p~n"
+	    "  Addr:      ~p~n"
+	    "  Idxs:      ~p", [Community, Addr, Idxs]),
     loop_c2v_rows(lists:keysort(2, Idxs), Addr).
 
 loop_c2v_rows([{_, CommunityIndex} | T], Addr) ->
@@ -250,6 +258,9 @@ loop_c2v_rows([{_, CommunityIndex} | T], Addr) ->
 	    "~n   CommunityIndex: ~p", [CommunityIndex]),
     case get_row(CommunityIndex) of
 	{_Community, VacmParams, Tag} ->
+	    ?vtrace("loop_c2v_rows ->~n"
+		    "  VacmParams: ~p~n"
+		    "  Tag:        ~p", [VacmParams, Tag]),
 	    {TDomain, TAddr} = Addr,
 	    case snmp_target_mib:is_valid_tag(Tag, TDomain, TAddr) of
 		true ->
@@ -506,7 +517,12 @@ snmpTargetAddrExtTable(get_next, RowIndex, Cols) ->
     NCols = conv1(Cols),
     conv2(next(snmpTargetAddrExtTable, RowIndex, NCols));
 snmpTargetAddrExtTable(set, RowIndex, Cols0) ->
-    case (catch verify_snmpTargetAddrExtTable_cols(Cols0, [])) of
+    case
+	(catch verify_snmpTargetAddrExtTable_cols(
+		 Cols0,
+		 get_snmpTargetAddrTDomain(RowIndex, Cols0),
+		 []))
+    of
 	{ok, Cols} ->
 	    NCols = conv3(Cols),
 	    snmp_generic:table_func(set, RowIndex, NCols, 
@@ -515,7 +531,11 @@ snmpTargetAddrExtTable(set, RowIndex, Cols0) ->
 	    Error
     end;
 snmpTargetAddrExtTable(is_set_ok, RowIndex, Cols0) ->
-    case (catch verify_snmpTargetAddrExtTable_cols(Cols0, [])) of
+    case (catch verify_snmpTargetAddrExtTable_cols(
+		  Cols0,
+		  get_snmpTargetAddrTDomain(RowIndex, Cols0),
+		  []))
+    of
 	{ok, Cols} ->
 	    NCols = conv3(Cols),
 	    snmp_generic:table_func(is_set_ok, RowIndex, NCols, 
@@ -525,29 +545,49 @@ snmpTargetAddrExtTable(is_set_ok, RowIndex, Cols0) ->
     end.
 
 
-verify_snmpTargetAddrExtTable_cols([], Cols) ->
+
+get_snmpTargetAddrTDomain(RowIndex, Col) ->
+    case
+	get(
+	  snmpTargetAddrTable, RowIndex,
+	  [?snmpTargetAddrRowStatus,?snmpTargetAddrTDomain])
+    of
+	[{value,?snmpTargetAddrRowStatus_active},ValueTDomain] ->
+	    case ValueTDomain of
+		{value,TDomain} ->
+		    TDomain;
+		_ ->
+		    ?snmpUDPDomain
+	    end;
+	_ ->
+	    wrongValue(Col)
+    end.
+
+
+
+verify_snmpTargetAddrExtTable_cols([], _TDomain, Cols) ->
     {ok, lists:reverse(Cols)};
-verify_snmpTargetAddrExtTable_cols([{Col, Val0}|Cols], Acc) ->
-    Val = verify_snmpTargetAddrExtTable_col(Col, Val0),
-    verify_snmpTargetAddrExtTable_cols(Cols, [{Col, Val}|Acc]).
+verify_snmpTargetAddrExtTable_cols([{Col, Val0}|Cols], TDomain, Acc) ->
+    Val = verify_snmpTargetAddrExtTable_col(Col, TDomain, Val0),
+    verify_snmpTargetAddrExtTable_cols(Cols, TDomain, [{Col, Val}|Acc]).
 
-verify_snmpTargetAddrExtTable_col(?snmpTargetAddrTMask, []) ->
+verify_snmpTargetAddrExtTable_col(?snmpTargetAddrTMask, _TDomain, []) ->
     [];
-verify_snmpTargetAddrExtTable_col(?snmpTargetAddrTMask, TMask) ->
-    case (catch snmp_conf:check_taddress(TMask)) of
+verify_snmpTargetAddrExtTable_col(?snmpTargetAddrTMask, TDomain, TMask) ->
+    case (catch snmp_conf:check_taddress(TDomain, TMask)) of
 	ok ->
 	    TMask; 
 	_ ->
 	    wrongValue(?snmpTargetAddrTMask)
     end;
-verify_snmpTargetAddrExtTable_col(?snmpTargetAddrMMS, MMS) ->
+verify_snmpTargetAddrExtTable_col(?snmpTargetAddrMMS, _TDomain, MMS) ->
     case (catch snmp_conf:check_packet_size(MMS)) of
 	ok ->
 	    MMS;
 	_ ->
 	    wrongValue(?snmpTargetAddrMMS)
     end;
-verify_snmpTargetAddrExtTable_col(_, Val) ->
+verify_snmpTargetAddrExtTable_col(_, _TDomain, Val) ->
     Val.
 
 db(snmpTargetAddrExtTable) -> db(snmpTargetAddrTable);
@@ -583,6 +623,7 @@ conv3([{Idx, Val}|T]) -> [{Idx+10, Val} | conv3(T)];
 conv3([]) -> [].
 
 
+
 get(Name, RowIndex, Cols) ->
     snmp_generic:handle_table_get(db(Name), RowIndex, Cols, foi(Name)).
 
diff --git a/lib/snmp/src/agent/snmp_framework_mib.erl b/lib/snmp/src/agent/snmp_framework_mib.erl
index cc191bd956..7ea4f0ed97 100644
--- a/lib/snmp/src/agent/snmp_framework_mib.erl
+++ b/lib/snmp/src/agent/snmp_framework_mib.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -41,6 +42,7 @@
 -compile({no_auto_import,[error/1]}).
 -export([init/0, configure/1]).
 -export([intContextTable/1, intContextTable/3,
+	 intAgentTransportDomain/1, intAgentTransports/1,
 	 intAgentUDPPort/1, intAgentIpAddress/1,
 	 snmpEngineID/1,
 	 snmpEngineBoots/1,
@@ -51,7 +53,7 @@
 	 set_engine_boots/1, set_engine_time/1,
 	 table_next/2, check_status/3]).
 -export([add_context/1, delete_context/1]).
--export([check_agent/1, check_context/1]).
+-export([check_agent/2, check_context/1, order_agent/2]).
 
 
 %%-----------------------------------------------------------------
@@ -115,54 +117,46 @@ do_configure(Dir) ->
 
 read_internal_config_files(Dir) ->
     ?vdebug("read context config file",[]),
-    Gen    = fun(D, Reason) -> 
-		     convert_context(D, Reason) 
-	     end,
-    Filter = fun(Contexts) -> Contexts end,
-    Check  = fun(Entry) -> check_context(Entry) end,
-    [Ctxs] = snmp_conf:read_files(Dir, [{Gen, Filter, Check, "context.conf"}]),
+    Gen    = fun gen_context/2,
+    Order  = fun snmp_conf:no_order/2,
+    Filter = fun snmp_conf:no_filter/1,
+    Check  = fun(Entry, State) -> {check_context(Entry), State} end,
+    [Ctxs] =
+	snmp_conf:read_files
+	  (Dir, [{"context.conf", Gen, Order, Check, Filter}]),
     Ctxs.
 
-
 read_agent(Dir) ->
     ?vdebug("read agent config file", []),
-    FileName = "agent.conf", 
-    Check    = fun(Entry) -> check_agent(Entry) end,
+    FileName = "agent.conf",
     File     = filename:join(Dir, FileName), 
-    Agent    = 
+    Conf0    =
 	try
-	    snmp_conf:read(File, Check)
+	    snmp_conf:read(File, fun order_agent/2, fun check_agent/2)
 	catch
 	    throw:{error, Reason} ->
 		error({failed_reading_config_file, Dir, FileName, Reason})
 	end,
-    sort_agent(Agent).
-
-
-%%-----------------------------------------------------------------
-%% Make sure that each mandatory agent attribute is present, and
-%% provide default values for the other non-present attributes.
-%%-----------------------------------------------------------------
-sort_agent(L) ->
-    Mand = [{intAgentIpAddress,        mandatory},
-	    {intAgentUDPPort,          mandatory},
-	    {snmpEngineMaxMessageSize, mandatory},
-	    {snmpEngineID,             mandatory}],
-    {ok, L2} = snmp_conf:check_mandatory(L, Mand),
-    lists:keysort(1, L2).
+    Mand =
+	[{intAgentTransports,       mandatory},
+	 {snmpEngineMaxMessageSize, mandatory},
+	 {snmpEngineID,             mandatory}],
+    {ok, Conf} = snmp_conf:check_mandatory(Conf0, Mand),
+    Conf.
 
 
 %%-----------------------------------------------------------------
 %% Generate a context.conf file.
 %%-----------------------------------------------------------------
-convert_context(Dir, _Reason) ->
+gen_context(Dir, _Reason) ->
     config_err("missing context.conf file => generating a default file", []),
     File = filename:join(Dir, "context.conf"),
     case file:open(File, [write]) of
 	{ok, Fid} ->
 	    ok = io:format(Fid, "~s\n", [context_header()]),
 	    ok = io:format(Fid, "%% The default context\n\"\".\n", []),
-	    file:close(Fid);
+	    file:close(Fid),
+	    [];
 	{error, Reason} ->
             file:delete(File),
 	    error({failed_creating_file, File, Reason})
@@ -196,10 +190,50 @@ check_context(Context) ->
 %%  Agent
 %%  {Name, Value}.
 %%-----------------------------------------------------------------
-check_agent({intAgentIpAddress, Value}) -> 
-    snmp_conf:check_ip(Value);
-check_agent({intAgentUDPPort, Value}) -> 
-    snmp_conf:check_integer(Value);
+check_agent(Entry, undefined) ->
+    check_agent(Entry, {snmp_target_mib:default_domain(), undefined});
+check_agent({intAgentTransportDomain, Domain}, {_, Port}) ->
+    {snmp_conf:check_domain(Domain), {Domain, Port}};
+check_agent({intAgentUDPPort, Port}, {Domain, _}) ->
+    ok = snmp_conf:check_port(Port),
+    {ok, {Domain, Port}};
+check_agent({intAgentIpAddress, _}, {_, undefined}) ->
+    error({missing_mandatory, intAgentUDPPort});
+check_agent({intAgentIpAddress = Tag, Ip} = Entry, {Domain, Port} = State) ->
+    {case snmp_conf:check_ip(Domain, Ip) of
+	 ok ->
+	     [Entry,
+	      {intAgentTransports, [{Domain, {Ip, Port}}]}];
+	 {ok, FixedIp} ->
+	     [{Tag, FixedIp},
+	      {intAgentTransports, [{Domain, {FixedIp, Port}}]}]
+     end, State};
+check_agent({intAgentTransports = Tag, Transports}, {_, Port} = State)
+  when is_list(Transports) ->
+    CheckedTransports =
+	[case Transport of
+	     {Domain, Address} ->
+		 case
+		     case Port of
+			 undefined ->
+			     snmp_conf:check_address(Domain, Address);
+			 _ ->
+			     snmp_conf:check_address(Domain, Address, Port)
+		     end
+		 of
+		     ok ->
+			 Transport;
+		     {ok, FixedAddress} ->
+			 {Domain, FixedAddress}
+		 end;
+	     _ ->
+		 error({bad_transport, Transport})
+	 end
+	 || Transport <- Transports],
+    {{ok, {Tag, CheckedTransports}}, State};
+check_agent(Entry, State) ->
+    {check_agent(Entry), State}.
+
 %% This one is kept for backwards compatibility
 check_agent({intAgentMaxPacketSize, Value}) -> 
     snmp_conf:check_packet_size(Value);
@@ -210,6 +244,14 @@ check_agent({snmpEngineID, Value}) ->
 check_agent(X) -> 
     error({invalid_agent_attribute, X}).
 
+%% Ordering function to sort intAgentTransportDomain first
+%% hence before intAgentIpAddress.  Sort other entries on the key.
+order_agent(EntryA, EntryB) ->
+    snmp_conf:keyorder(
+      1, EntryA, EntryB,
+      [intAgentTransportDomain, intAgentUDPPort | sort]).
+
+
 
 maybe_create_table(Name) ->
     case snmpa_local_db:table_exists(db(Name)) of
@@ -382,6 +424,14 @@ intAgentUDPPort(Op) ->
 intAgentIpAddress(Op) ->
     snmp_generic:variable_func(Op, db(intAgentIpAddress)).
 
+intAgentTransportDomain(Op) ->
+    snmp_generic:variable_func(Op, db(intAgentTransportDomain)).
+
+intAgentTransports(Op) ->
+    snmp_generic:variable_func(Op, db(intAgentTransports)).
+
+
+
 snmpEngineID(print) ->
     VarAndValue = [{snmpEngineID, snmpEngineID(get)}],
     snmpa_mib_lib:print_variables(VarAndValue);
diff --git a/lib/snmp/src/agent/snmp_generic.erl b/lib/snmp/src/agent/snmp_generic.erl
index 06afa68d96..fc23e16ef1 100644
--- a/lib/snmp/src/agent/snmp_generic.erl
+++ b/lib/snmp/src/agent/snmp_generic.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -414,7 +415,12 @@ table_check_status(NameDb, Col, ?'RowStatus_createAndGo', RowIndex, Cols) ->
 	    % side effect free and we only use the result temporary.
 	    case catch snmpa_local_db:table_construct_row(
 			 NameDb, RowIndex, ?'RowStatus_createAndGo', Cols) of
-		{'EXIT', _} ->
+		{'EXIT', _Reason} ->
+		    ?vtrace(
+		       "failed construct row (createAndGo): "
+		       " n   Reason: ~p"
+		       " n   Stack:  ~p",
+		       [_Reason, erlang:get_stacktrace()]),
 		    {noCreation, Col}; % Bad RowIndex
 		Row ->
 		    case lists:member(noinit, tuple_to_list(Row)) of
@@ -431,7 +437,12 @@ table_check_status(NameDb, Col, ?'RowStatus_createAndWait', RowIndex, Cols) ->
 	false ->
 	    case catch snmpa_local_db:table_construct_row(
 			 NameDb, RowIndex, ?'RowStatus_createAndGo', Cols) of
-		{'EXIT', _} ->
+		{'EXIT', _Reason} ->
+		    ?vtrace(
+		       "failed construct row (createAndWait): "
+		       " n   Reason: ~p"
+		       " n   Stack:  ~p",
+		       [_Reason, erlang:get_stacktrace()]),
 		    {noCreation, Col}; % Bad RowIndex
 		_Row ->
 		    {noError, 0}
@@ -711,7 +722,19 @@ find_col(Col, [_H | T]) -> find_col(Col, T).
 
 
 try_apply(nofunc, _) -> {noError, 0};
-try_apply(F, Args) -> apply(F, Args).
+try_apply(F, Args) -> maybe_verbose_apply(F, Args).
+
+maybe_verbose_apply(M, Args) ->
+    case get(verbosity) of
+        false ->
+            apply(M, Args);
+        _ ->
+            ?vlog("~n   apply: ~w,~p~n", [M,Args]),
+            Res = apply(M,Args),
+            ?vlog("~n   returned: ~p", [Res]),
+            Res
+    end.
+
 
 table_info({Name, _Db}) ->
     case snmpa_symbolic_store:table_info(Name) of
diff --git a/lib/snmp/src/agent/snmp_generic_mnesia.erl b/lib/snmp/src/agent/snmp_generic_mnesia.erl
index 7fd6501977..131b9b0368 100644
--- a/lib/snmp/src/agent/snmp_generic_mnesia.erl
+++ b/lib/snmp/src/agent/snmp_generic_mnesia.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmp_index.erl b/lib/snmp/src/agent/snmp_index.erl
index 1902fe2613..38b39a9b7e 100644
--- a/lib/snmp/src/agent/snmp_index.erl
+++ b/lib/snmp/src/agent/snmp_index.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmp_notification_mib.erl b/lib/snmp/src/agent/snmp_notification_mib.erl
index 37e09f5d3e..3f1ba5d8b3 100644
--- a/lib/snmp/src/agent/snmp_notification_mib.erl
+++ b/lib/snmp/src/agent/snmp_notification_mib.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1998-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -106,17 +107,19 @@ do_reconfigure(Dir) ->
 read_notify_config_files(Dir) ->
     ?vdebug("read notify config file",[]),
     FileName = "notify.conf", 
-    Gen      = fun(D, Reason) -> 
-		       info_msg("failed reading config file ~s"
-				"~n   Config Dir: ~s"
-				"~n   Reason:     ~p", 
-				[FileName, D, Reason]),
-		       ok 
-	       end,
-    Filter = fun(Notifs) -> Notifs end,
-    Check  = fun(Entry) -> check_notify(Entry) end,
+    Gen =
+	fun (D, Reason) ->
+		info_msg("failed reading config file ~s"
+			 "~n   Config Dir: ~s"
+			 "~n   Reason:     ~p",
+			 [FileName, D, Reason]),
+		ok
+	end,
+    Order  = fun snmp_conf:no_order/2,
+    Filter = fun snmp_conf:no_filter/1,
+    Check  = fun (Entry, State) -> {check_notify(Entry), State} end,
     [Notifs] = 
-	snmp_conf:read_files(Dir, [{Gen, Filter, Check, "notify.conf"}]),
+	snmp_conf:read_files(Dir, [{FileName, Gen, Order, Check, Filter}]),
     Notifs.
 
 check_notify({Name, Tag, Type}) ->
diff --git a/lib/snmp/src/agent/snmp_shadow_table.erl b/lib/snmp/src/agent/snmp_shadow_table.erl
index 34543d542b..f9181f70a7 100644
--- a/lib/snmp/src/agent/snmp_shadow_table.erl
+++ b/lib/snmp/src/agent/snmp_shadow_table.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2015. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -76,7 +77,7 @@ delete_time_stamp_table() ->
     end.
 
 update(Name, UpdateFunc, Interval) ->
-    CurrentTime = get_time(),
+    CurrentTime = snmp_misc:now(ms),
     case mnesia:dirty_read({time_stamp, Name}) of
 	[#time_stamp{data = Expire}] when CurrentTime =< Expire -> ok;
 	_ ->
@@ -117,9 +118,6 @@ table_func(Op, RowIndex, Cols,
     update(Name, UpdateFunc, Interval),
     snmp_generic:table_func(Op, RowIndex, Cols, {Name, mnesia}).
 
-get_time() ->
-    {M,S,U} = erlang:now(),
-    1000000000 * M + 1000 * S + (U div 1000).
 
 %%-----------------------------------------------------------------
 %% Urrk.
@@ -183,5 +181,3 @@ delete_table(Tab) ->
 
 error_msg(F, A) ->
     ?snmpa_error(F, A).
-
-
diff --git a/lib/snmp/src/agent/snmp_standard_mib.erl b/lib/snmp/src/agent/snmp_standard_mib.erl
index 766b75022b..bfe471178d 100644
--- a/lib/snmp/src/agent/snmp_standard_mib.erl
+++ b/lib/snmp/src/agent/snmp_standard_mib.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2015. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -152,16 +153,19 @@ do_reconfigure(Dir) ->
 %%-----------------------------------------------------------------
 read_standard(Dir) ->
     ?vdebug("check standard config file",[]),
-    FileName   = "standard.conf", 
-    Gen        = fun(D, Reason) -> 
-			 throw({error, {failed_reading_config_file, 
-					D, FileName, 
-					list_dir(Dir), Reason}})
-		 end,
-    Filter     = fun(Standard) -> sort_standard(Standard) end,
-    Check      = fun(Entry) -> check_standard(Entry) end,
+    FileName = "standard.conf",
+    Gen =
+	fun (D, Reason) ->
+		throw(
+		  {error,
+		   {failed_reading_config_file,
+		    D, FileName, list_dir(Dir), Reason}})
+	end,
+    Order  = fun snmp_conf:no_order/2,
+    Check  = fun (Entry, State) -> {check_standard(Entry), State} end,
+    Filter = fun sort_standard/1,
     [Standard] = 
-	snmp_conf:read_files(Dir, [{Gen, Filter, Check, FileName}]), 
+	snmp_conf:read_files(Dir, [{FileName, Gen, Order, Check, Filter}]),
     Standard.
 
 list_dir(Dir) ->
@@ -543,8 +547,9 @@ dummy(_Op) -> ok.
 %%-----------------------------------------------------------------
 snmp_set_serial_no(new) ->
     snmp_generic:variable_func(new, {snmpSetSerialNo, volatile}),
-    {A1,A2,A3} = erlang:now(),
-    random:seed(A1,A2,A3),
+    random:seed(erlang:phash2([node()]),
+                erlang:monotonic_time(),
+                erlang:unique_integer()),
     Val = random:uniform(2147483648) - 1,
     snmp_generic:variable_func(set, Val, {snmpSetSerialNo, volatile});
 
diff --git a/lib/snmp/src/agent/snmp_target_mib.erl b/lib/snmp/src/agent/snmp_target_mib.erl
index b01d536caa..e65fa7f340 100644
--- a/lib/snmp/src/agent/snmp_target_mib.erl
+++ b/lib/snmp/src/agent/snmp_target_mib.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1998-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2015. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -133,18 +134,22 @@ do_reconfigure(Dir) ->
 
 read_target_config_files(Dir) ->
     ?vdebug("check target address and parameter config file(s)",[]),
-    TAGen    = fun(_D, _Reason) -> ok end,
-    TAFilter = fun(Addr) -> Addr end,
-    TACheck  = fun(Entry) -> check_target_addr(Entry) end,
 
-    TPGen    = fun(_D, _Reason) -> ok end,
-    TPFilter = fun(Params) -> Params end,
-    TPCheck  = fun(Entry) -> check_target_params(Entry) end,
+    TAName   = "target_addr.conf",
+    TACheck  = fun (Entry, State) -> {check_target_addr(Entry), State} end,
+
+    TPName   = "target_params.conf",
+    TPCheck  = fun (Entry, State) -> {check_target_params(Entry), State} end,
+
+    NoGen    = fun snmp_conf:no_gen/2,
+    NoOrder  = fun snmp_conf:no_order/2,
+    NoFilter = fun snmp_conf:no_filter/1,
 
     [Addrs, Params] = 
-        snmp_conf:read_files(Dir, 
-			     [{TAGen, TAFilter, TACheck, "target_addr.conf"},
-			      {TPGen, TPFilter, TPCheck, "target_params.conf"}]),
+        snmp_conf:read_files(
+	  Dir,
+	  [{TAName, NoGen, NoOrder, TACheck, NoFilter},
+	   {TPName, NoGen, NoOrder, TPCheck, NoFilter}]),
     {Addrs, Params}.
 
 
@@ -154,79 +159,173 @@ read_target_config_files(Dir) ->
 %%   TMask, MMS}
 %%-----------------------------------------------------------------
 
-check_target_addr({Name, Domain, Ip, Udp, Timeout, RetryCount, TagList,
-		   Params, EngineId, TMask, MMS}) ->
+check_target_addr(
+  {Name, Domain, Ip, Udp, Timeout, RetryCount, TagList, Params,
+   EngineId, TMask, MMS}) -> % Arity 11
+    Address = {Ip, Udp},
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+      EngineId, TMask, MMS);
+check_target_addr(
+  {Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+   EngineId, TMask, MMS}) % Arity 10
+  when is_atom(Domain) ->
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+      EngineId, TMask, MMS);
+check_target_addr(
+  {Name, Ip, Udp, Timeout, RetryCount, TagList, Params,
+   EngineId, TMask, MMS})
+  when is_integer(Udp) -> % Arity 10
+    Domain = default_domain(),
+    Address = {Ip, Udp},
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+      EngineId, TMask, MMS);
+check_target_addr(
+  {_Name, Domain, Address, _Timeout, _RetryCount, _TagList, _Params,
+   _EngineId, _TMask, _MMS}) -> % Arity 10
+    error({bad_address, {Domain, Address}});
+check_target_addr(
+  {Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+   EngineId}) % Arity 8
+  when is_atom(Domain) ->
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+      EngineId);
+check_target_addr(
+  {Name, Ip, Udp, Timeout, RetryCount, TagList, Params,
+   EngineId}) % Arity 8
+  when is_integer(Udp) ->
+    Domain = default_domain(),
+    Address = {Ip, Udp},
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+      EngineId);
+check_target_addr(
+  {_Name, Domain, Address, _Timeout, _RetryCount, _TagList, _Params,
+   _EngineId}) ->% Arity 8
+    error({bad_address, {Domain, Address}});
+%% Use dummy engine id if the old style is found
+check_target_addr(
+  {Name, Domain, Address, Timeout, RetryCount, TagList, Params}) % Arity 7
+  when is_atom(Domain) ->
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params);
+check_target_addr(
+  {Name, Ip, Udp, Timeout, RetryCount, TagList, Params})  % Arity 7
+  when is_integer(Udp) ->
+    Domain = default_domain(),
+    Address = {Ip, Udp},
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params);
+check_target_addr(
+  {_Name, Domain, Address, _Timeout, _RetryCount, _TagList, _Params}) -> % Arity 7
+    error({bad_address, {Domain, Address}});
+%% Use dummy engine id if the old style is found
+check_target_addr(
+  {Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+   TMask, MMS}) % Arity 9
+  when is_atom(Domain) ->
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params, TMask, MMS);
+check_target_addr(
+  {Name, Ip, Udp, Timeout, RetryCount, TagList, Params,
+   TMask, MMS}) % Arity 9
+  when is_integer(Udp) ->
+    Domain = default_domain(),
+    Address = {Ip, Udp},
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params, TMask, MMS);
+check_target_addr(
+  {_Name, Domain, Address, _Timeout, _RetryCount, _TagList, _Params,
+   _TMask, _MMS}) -> % Arity 9
+    error({bad_address, {Domain, Address}});
+check_target_addr(X) ->
+    error({invalid_target_addr, X}).
+
+check_target_addr(
+  Name, Domain, Address, Timeout, RetryCount, TagList, Params) -> % Arity 7
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+      "dummy").
+%%
+check_target_addr(
+  Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+  EngineId) -> % Arity 8
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+      EngineId, [], 2048).
+%%
+check_target_addr(
+  Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+  TMask, MMS) -> % Arity 9
+    check_target_addr(
+      Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+      "dummy", TMask, MMS).
+%%
+check_target_addr(
+  Name, Domain, Address, Timeout, RetryCount, TagList, Params,
+  EngineId, Mask, MMS) -> % Arity 10
     ?vtrace("check target address with:"
 	    "~n   Name:       ~s"
 	    "~n   Domain:     ~p"
-	    "~n   Ip:         ~p"
-	    "~n   Udp:        ~p"
+	    "~n   Address:    ~p"
 	    "~n   Timeout:    ~p"
 	    "~n   RetryCount: ~p"
 	    "~n   TagList:    ~p"
 	    "~n   Params:     ~p"
 	    "~n   EngineId:   ~p"
-	    "~n   TMask:      ~p"
+	    "~n   Mask:      ~p"
 	    "~n   MMS:        ~p",
-	    [Name, 
-	     Domain, Ip, Udp, 
+	    [Name, Domain, Address,
 	     Timeout, RetryCount,
-	     TagList, Params, EngineId, TMask, MMS]),
+	     TagList, Params, EngineId, Mask, MMS]),
     snmp_conf:check_string(Name,{gt,0}),
     snmp_conf:check_domain(Domain),
-    snmp_conf:check_ip(Domain, Ip),
-    snmp_conf:check_integer(Udp, {gt, 0}),
+    NAddress = check_address(Domain, Address),
     snmp_conf:check_integer(Timeout, {gte, 0}),
     snmp_conf:check_integer(RetryCount, {gte,0}),
     snmp_conf:check_string(TagList),
     snmp_conf:check_string(Params),
     check_engine_id(EngineId),
-    TAddress = snmp_conf:mk_taddress(Domain, Ip, Udp),
+    NMask = check_mask(Domain, Mask),
     TDomain  = snmp_conf:mk_tdomain(Domain), 
-    check_tmask(TDomain, TMask, TAddress),
+    TAddress = snmp_conf:mk_taddress(Domain, NAddress),
+    TMask    = snmp_conf:mk_taddress(Domain, NMask),
     snmp_conf:check_packet_size(MMS),
     ?vtrace("check target address done",[]),
     Addr = {Name, TDomain, TAddress, Timeout,
 	    RetryCount, TagList, Params,
 	    ?'StorageType_nonVolatile', ?'RowStatus_active', EngineId,
             TMask, MMS}, % Values for Augmenting table in SNMP-COMMUNITY-MIB
-    {ok, Addr};
-check_target_addr({Name, Ip, Udp, Timeout, RetryCount, TagList,
-                   Params, EngineId, TMask, MMS}) ->
-    Domain = default_domain(), 
-    check_target_addr({Name, 
-		       Domain, Ip, Udp, 
-		       Timeout, RetryCount, TagList,
-		       Params, EngineId, TMask, MMS});
-check_target_addr({Name, Ip, Udp, Timeout, RetryCount, TagList, Params, 
-                   EngineId}) ->
-    check_target_addr({Name, Ip, Udp, Timeout, RetryCount, TagList,
-                       Params, EngineId, [], 2048});
-%% Use dummy engine id if the old style is found
-check_target_addr({Name, Ip, Udp, Timeout, RetryCount, TagList, Params}) ->
-    check_target_addr({Name, Ip, Udp, Timeout, RetryCount, TagList,
-                       Params, "dummy", [], 2048});
-%% Use dummy engine id if the old style is found
-check_target_addr({Name, Ip, Udp, Timeout, RetryCount, TagList, Params, 
-		   TMask, MMS}) ->
-    check_target_addr({Name, Ip, Udp, Timeout, RetryCount, TagList,
-                       Params, "dummy", TMask, MMS});
-check_target_addr(X) ->
-    error({invalid_target_addr, X}).
-
+    {ok, Addr}.
 
 check_engine_id(discovery) ->
     ok;
 check_engine_id(EngineId) ->
     snmp_conf:check_string(EngineId).
 
+check_address(Domain, Address) ->
+    case snmp_conf:check_address(Domain, Address, 162) of
+	ok ->
+	    Address;
+	{ok, NAddress} ->
+	    NAddress
+    end.
 
-check_tmask(_TDomain, [], _TAddress) ->
-    ok;
-check_tmask(TDomain, TMask, TAddress) when length(TMask) =:= length(TAddress) ->
-    snmp_conf:check_taddress(TDomain, TMask);
-check_tmask(_TDomain, TMask, _TAddr) ->
-    throw({error, {invalid_tmask, TMask}}).
+check_mask(_Domain, [] = Mask) ->
+    Mask;
+check_mask(Domain, Mask) ->
+    try snmp_conf:check_address(Domain, Mask) of
+	ok ->
+	    Mask;
+	{ok, NMask} ->
+	    NMask
+    catch
+	{error, {bad_address, Info}} ->
+	    error({bad_mask, Info})
+    end.
 
 
 %%-----------------------------------------------------------------
@@ -248,13 +347,6 @@ check_target_params(X) ->
     error({invalid_target_params, X}).
 
 
-
-%% maybe_create_table(Name) ->
-%%     case snmpa_local_db:table_exists(db(Name)) of
-%% 	true -> ok;
-%% 	_ -> snmpa_local_db:table_create(db(Name))
-%%     end.
-
 init_tabs(Addrs, Params) ->
     ?vdebug("create target address table",[]),
     AddrDB = db(snmpTargetAddrTable),
@@ -286,16 +378,21 @@ table_del_row(Tab, Key) ->
     snmpa_mib_lib:table_del_row(db(Tab), Key).
 
 
-add_addr(Name, Ip, Port, Timeout, Retry, TagList, 
-	 Params, EngineId, TMask, MMS) ->
-    Domain = default_domain(), 
-    add_addr(Name, Domain, Ip, Port, Timeout, Retry, TagList, 
-	     Params, EngineId, TMask, MMS).
-
-add_addr(Name, Domain, Ip, Port, Timeout, Retry, TagList, 
-	 Params, EngineId, TMask, MMS) ->
-    Addr = {Name, Domain, Ip, Port, Timeout, Retry, TagList, 
-	    Params, EngineId, TMask, MMS},
+add_addr(
+  Name, Domain_or_Ip, Addr_or_Port, Timeout, Retry, TagList, Params,
+  EngineId, TMask, MMS) ->
+    add_addr(
+      {Name, Domain_or_Ip, Addr_or_Port, Timeout, Retry, TagList, Params,
+       EngineId, TMask, MMS}).
+%%
+add_addr(
+  Name, Domain, Ip, Port, Timeout, Retry, TagList, Params,
+  EngineId, TMask, MMS) ->
+    add_addr(
+      {Name, Domain, Ip, Port, Timeout, Retry, TagList, Params,
+       EngineId, TMask, MMS}).
+%%
+add_addr(Addr) ->
     case (catch check_target_addr(Addr)) of
 	{ok, Row} ->
 	    Key = element(1, Row),
@@ -576,8 +673,9 @@ snmpTargetSpinLock(print) ->
     
 snmpTargetSpinLock(new) ->
     snmp_generic:variable_func(new, {snmpTargetSpinLock, volatile}),
-    {A1,A2,A3} = erlang:now(),
-    random:seed(A1,A2,A3),
+    random:seed(erlang:phash2([node()]),
+                erlang:monotonic_time(),
+                erlang:unique_integer()),
     Val = random:uniform(2147483648) - 1,
     snmp_generic:variable_func(set, Val, {snmpTargetSpinLock, volatile});
 
@@ -604,6 +702,20 @@ snmpTargetAddrTable(print) ->
     FOI   = foi(Table),
     PrintRow = 
 	fun(Prefix, Row) ->
+		TDomain = element(?snmpTargetAddrTDomain, Row),
+		Domain =
+		    try snmp_conf:tdomain_to_domain(TDomain)
+		    catch
+			{error, {bad_tdomain, _}} ->
+			    undefined
+		    end,
+		TAddress = element(?snmpTargetAddrTAddress, Row),
+		AddrString =
+		    try snmp_conf:mk_addr_string({Domain, TAddress})
+		    catch
+			{error, {bad_address, _}} ->
+			    "-"
+		    end,
 		lists:flatten(
 		  io_lib:format("~sName:              ~p"
 				"~n~sTDomain:           ~p (~w)"
@@ -618,21 +730,8 @@ snmpTargetAddrTable(print) ->
 				"~n~s[Ext] TMask:       ~p"
 				"~n~s[Ext] MMS:         ~p", 
 				[Prefix, element(?snmpTargetAddrName, Row),
-				 Prefix, element(?snmpTargetAddrTDomain, Row),
-				 case element(?snmpTargetAddrTDomain, Row) of
-				     ?snmpUDPDomain -> snmpUDPDomain;
-				     ?transportDomainUdpIpv4 -> transportDomainUdpIpv4;
-				     ?transportDomainUdpIpv6 -> transportDomainUdpIpv6;
-				     _ -> undefined
-				 end,
-				 Prefix, element(?snmpTargetAddrTAddress, Row),
-				 case element(?snmpTargetAddrTAddress, Row) of
-				     [A,B,C,D,U1,U2] ->
-					 lists:flatten(
-					   io_lib:format("~w.~w.~w.~w:~w", 
-							 [A, B, C, D, U1 bsl 8 + U2]));
-				     _ -> "-"
-				 end,
+				 Prefix, TDomain, Domain,
+				 Prefix, TAddress, AddrString,
 				 Prefix, element(?snmpTargetAddrTimeout, Row),
 				 Prefix, element(?snmpTargetAddrRetryCount, Row),
 				 Prefix, element(?snmpTargetAddrTagList, Row),
@@ -976,5 +1075,3 @@ error(Reason) ->
 
 config_err(F, A) ->
     snmpa_error:config_err("[TARGET-MIB]: " ++ F, A).
-
-
diff --git a/lib/snmp/src/agent/snmp_user_based_sm_mib.erl b/lib/snmp/src/agent/snmp_user_based_sm_mib.erl
index 223d3f7218..f6e4fd3951 100644
--- a/lib/snmp/src/agent/snmp_user_based_sm_mib.erl
+++ b/lib/snmp/src/agent/snmp_user_based_sm_mib.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2015. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -137,18 +138,20 @@ do_reconfigure(Dir) ->
 
 read_usm_config_files(Dir) ->
     ?vdebug("read usm config file",[]),
-    Gen    = fun(D, Reason) -> generate_usm(D, Reason) end,
-    Filter = fun(Usms) -> Usms end,
-    Check  = fun(Entry) -> check_usm(Entry) end,
+    Gen    = fun (D, Reason) -> generate_usm(D, Reason) end,
+    Order  = fun snmp_conf:no_order/2,
+    Check  = fun (Entry, State) -> {check_usm(Entry), State} end,
+    Filter = fun snmp_conf:no_filter/1,
     [Usms] = 
-	snmp_conf:read_files(Dir, [{Gen, Filter, Check, "usm.conf"}]),
+	snmp_conf:read_files(Dir, [{"usm.conf", Gen, Order, Check, Filter}]),
     Usms.
 
 
 generate_usm(Dir, _Reason) ->
     info_msg("Incomplete configuration. Generating empty usm.conf.", []),
     USMFile = filename:join(Dir, "usm.conf"),
-    ok = file:write_file(USMFile, list_to_binary([])).
+    ok = file:write_file(USMFile, list_to_binary([])),
+    [].
 
 
 check_usm({EngineID, Name, SecName, Clone, AuthP, AuthKeyC, OwnAuthKeyC,
@@ -437,8 +440,9 @@ usmUserSpinLock(print) ->
     
 usmUserSpinLock(new) ->
     snmp_generic:variable_func(new, {usmUserSpinLock, volatile}),
-    {A1,A2,A3} = erlang:now(),
-    random:seed(A1,A2,A3),
+    random:seed(erlang:phash2([node()]),
+                erlang:monotonic_time(),
+                erlang:unique_integer()),
     Val = random:uniform(2147483648) - 1,
     snmp_generic:variable_func(set, Val, {usmUserSpinLock, volatile});
 
@@ -1189,29 +1193,7 @@ extract_new_key(Hash, OldKey, KeyChange) ->
 -define(i8(Int), Int band 255).
 
 mk_random(Len) when Len =< 20 ->
-    %% Use of yield():
-    %% This will either schedule another process, or fail and invoke
-    %% the error_handler (in old versions).  In either case, it is
-    %% safe to assume that now, reductions and garbage_collection have
-    %% changed in a non-deterministically way.
-    {_,_,A} = erlang:now(),
-    catch erlang:yield(),
-    {_,_,B} = erlang:now(),
-    catch erlang:yield(),
-    {_,_,C} = erlang:now(),
-    {D,_}   = erlang:statistics(reductions),
-    {E,_}   = erlang:statistics(runtime),
-    {F,_}   = erlang:statistics(wall_clock),
-    {G,H,_} = erlang:statistics(garbage_collection),
-    catch erlang:yield(),
-    {_,_,C2} = erlang:now(),
-    {D2,_}   = erlang:statistics(reductions),
-    {_,H2,_} = erlang:statistics(garbage_collection),
-    %% X(N) means we can use N bits from variable X:
-    %% A(16) B(16) C(16) D(16) E(8) F(16) G(8) H(16)
-    Rnd20 = [?i16(A),?i16(B),?i16(C),?i16(D),?i8(E),?i16(F),
-	     ?i8(G),?i16(H),?i16(C2),?i16(D2),?i16(H2)],
-    lists:sublist(Rnd20, Len).
+    binary_to_list(crypto:strong_rand_bytes(Len)).
     
 split(0, Rest, FirstRev) ->
     {lists:reverse(FirstRev), Rest};
diff --git a/lib/snmp/src/agent/snmp_view_based_acm_mib.erl b/lib/snmp/src/agent/snmp_view_based_acm_mib.erl
index ad9540e886..02415e8036 100644
--- a/lib/snmp/src/agent/snmp_view_based_acm_mib.erl
+++ b/lib/snmp/src/agent/snmp_view_based_acm_mib.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -33,6 +34,8 @@
 
 %% Internal exports
 -export([check_vacm/1]).
+%%
+-export([emask2imask/1]).
 
 
 -include("snmp_types.hrl").
@@ -49,6 +52,14 @@
 -endif.
 
 
+-type internal_view_mask()         :: null | [internal_view_mask_element()].
+-type internal_view_mask_element() :: 0 | 1.
+
+-type external_view_mask() :: octet_string(). % At most length of 16 octet
+-type octet_string()       :: [octet()].
+-type octet()              :: byte().
+
+
 %%-----------------------------------------------------------------
 %% Func: configure/1
 %% Args: Dir is the directory where the configuration files are found.
@@ -115,15 +126,18 @@ do_reconfigure(Dir) ->
 
 read_vacm_config_files(Dir) ->
     ?vdebug("read vacm config file",[]),
-    Gen    = fun(_D, _Reason) -> ok end,
-    Filter = fun(Vacms) -> 
-                     Sec2Group = [X || {vacmSecurityToGroup, X} <- Vacms],
-                     Access = [X || {vacmAccess, X} <- Vacms],
-                     View = [X || {vacmViewTreeFamily, X} <- Vacms],
-                     {Sec2Group, Access, View}
-             end,
-    Check  = fun(Entry) -> check_vacm(Entry) end,
-    [Vacms] = snmp_conf:read_files(Dir, [{Gen, Filter, Check, "vacm.conf"}]),
+    Gen    = fun snmp_conf:no_gen/2,
+    Order  = fun snmp_conf:no_order/2,
+    Check  = fun (Entry, State) -> {check_vacm(Entry), State} end,
+    Filter =
+	fun (Vacms) ->
+		Sec2Group = [X || {vacmSecurityToGroup, X} <- Vacms],
+		Access = [X || {vacmAccess, X} <- Vacms],
+		View = [X || {vacmViewTreeFamily, X} <- Vacms],
+		{Sec2Group, Access, View}
+	end,
+    [Vacms] =
+	snmp_conf:read_files(Dir, [{"vacm.conf", Gen, Order, Check, Filter}]),
     Vacms.
 
 %%-----------------------------------------------------------------
@@ -160,14 +174,7 @@ check_vacm({vacmViewTreeFamily, ViewName, Tree, Type, Mask}) ->
     {ok, TypeVal} =
         snmp_conf:check_atom(Type, [{included, ?view_included},
 				    {excluded, ?view_excluded}]),
-    MaskVal = 
-        case (catch snmp_conf:check_atom(Mask, [{null, []}])) of
-            {error, _}  -> 
-                snmp_conf:check_oid(Mask),
-                Mask;
-	    {ok, X} ->
-		X
-	end,
+    {ok, MaskVal} = snmp_conf:check_imask(Mask), 
     Vacm = {ViewName, Tree, MaskVal, TypeVal, 
 	    ?'StorageType_nonVolatile', ?'RowStatus_active'},
     {ok, {vacmViewTreeFamily, Vacm}};
@@ -194,8 +201,8 @@ init_tabs(Sec2Group, Access, View) ->
     ok.
     
 init_sec2group_table([Row | T]) ->
-%%      ?vtrace("init security-to-group table: "
-%%  	    "~n   Row: ~p",[Row]),    
+    %% ?vtrace("init security-to-group table: "
+    %%         "~n   Row: ~p",[Row]),    
     Key1 = element(1, Row),
     Key2 = element(2, Row),
     Key = [Key1, length(Key2) | Key2],
@@ -841,8 +848,9 @@ vacmViewSpinLock(print) ->
 
 vacmViewSpinLock(new) ->
     snmp_generic:variable_func(new, volatile_db(vacmViewSpinLock)),
-    {A1,A2,A3} = erlang:now(),
-    random:seed(A1,A2,A3),
+    random:seed(erlang:phash2([node()]),
+                erlang:monotonic_time(),
+                erlang:unique_integer()),
     Val = random:uniform(2147483648) - 1,
     snmp_generic:variable_func(set, Val, volatile_db(vacmViewSpinLock));
 
@@ -953,13 +961,23 @@ verify_vacmViewTreeFamilyTable_col(?vacmViewTreeFamilySubtree, Tree) ->
 	    wrongValue(?vacmViewTreeFamilySubtree)
     end;
 verify_vacmViewTreeFamilyTable_col(?vacmViewTreeFamilyMask, Mask) ->
+    %% Mask here is in the "external" format. That is, according 
+    %% to the MIB, which means that its an OCTET STRING of max 16 
+    %% octets. 
+    %% We however store the mask as a list of 1's (exact) and 
+    %% 0's (wildcard), which means we have to convert the mask. 
     case Mask of
-	null -> [];
-	[]   -> [];
+	%% The Mask can only have this value if the vacmViewTreeFamilyTable
+	%% is called locally!
+	null -> 
+	    []; 
+	[] -> 
+	    [];
 	_ ->
-	    case (catch snmp_conf:check_oid(Mask)) of
-		ok ->
-		    Mask;
+	    %% Check and convert to our internal format
+	    case check_mask(Mask) of
+		{ok, IMask} ->
+		    IMask;
 	        _ ->
 		    wrongValue(?vacmViewTreeFamilyMask)
 	    end
@@ -977,6 +995,60 @@ verify_vacmViewTreeFamilyTable_col(_, Val) ->
     Val.
 	    
 
+check_mask(Mask) when is_list(Mask) andalso (length(Mask) =< 16) ->
+    try
+	begin
+	    {ok, emask2imask(Mask)}
+	end
+    catch
+	throw:{error, _} ->
+	    {error, {bad_mask, Mask}};
+	T:E ->
+	    {error, {bad_mask, Mask, T, E}}
+    end;
+check_mask(BadMask) ->
+    {error, {bad_mask, BadMask}}.
+
+-spec emask2imask(EMask :: external_view_mask()) ->
+    IMask :: internal_view_mask().
+
+%% Convert an External Mask (OCTET STRING) to Internal Mask (list of 0 or 1)
+emask2imask(EMask) ->
+    lists:flatten([octet2bits(Octet) || Octet <- EMask]).
+
+octet2bits(Octet) 
+  when is_integer(Octet) andalso (Octet >= 16#00) andalso (16#FF >= Octet) ->
+    <<A:1, B:1, C:1, D:1, E:1, F:1, G:1, H:1>> = <<Octet>>,
+    [A, B, C, D, E, F, G, H];
+octet2bits(BadOctet) ->
+    throw({error, {bad_octet, BadOctet}}).
+
+-spec imask2emask(IMask :: internal_view_mask()) ->
+    EMask :: external_view_mask().
+
+%% Convert an Internal Mask (list of 0 or 1) to External Mask (OCTET STRING) 
+imask2emask(IMask) ->
+    imask2emask(IMask, []).
+
+imask2emask([], EMask) ->
+    lists:reverse(EMask);
+imask2emask(IMask, EMask) ->
+    %% Make sure we have atleast 8 bits
+    %% (maybe extend with 1's)
+    IMask2 = 
+	case length(IMask) of
+	    Small when Small < 8 ->
+		IMask ++ lists:duplicate(8-Small, 1);
+	    _ ->
+		IMask
+	end, 
+    %% Extract 8 bits
+    [A, B, C, D, E, F, G, H | IMaskRest] = IMask2,
+    <<Octet:8>> = <<A:1, B:1, C:1, D:1, E:1, F:1, G:1, H:1>>,
+    imask2emask(IMaskRest, [Octet | EMask]). 
+
+
+
 table_next(Name, RestOid) ->
     snmp_generic:table_next(db(Name), RestOid).
 
@@ -1014,11 +1086,41 @@ stc(vacmSecurityToGroupTable) -> ?vacmSecurityToGroupStorageType;
 stc(vacmViewTreeFamilyTable) -> ?vacmViewTreeFamilyStorageType.
  
 next(Name, RowIndex, Cols) ->
-    snmp_generic:handle_table_next(db(Name), RowIndex, Cols,
-                                   fa(Name), foi(Name), noc(Name)).
+    Result = snmp_generic:handle_table_next(db(Name), RowIndex, Cols,
+					    fa(Name), foi(Name), noc(Name)),
+    externalize_next(Name, Result).
  
 get(Name, RowIndex, Cols) ->
-    snmp_generic:handle_table_get(db(Name), RowIndex, Cols, foi(Name)).
+    Result = snmp_generic:handle_table_get(db(Name), RowIndex, Cols, 
+					   foi(Name)),
+    externalize_get(Name, Cols, Result).
+
+
+externalize_next(Name, Result) when is_list(Result) ->
+    F = fun({[Col | _] = Idx, Val}) -> {Idx, externalize(Name, Col, Val)};
+	   (Other)                  -> Other
+	end,
+    [F(R) || R <- Result];
+externalize_next(_, Result) ->
+    Result.
+
+
+externalize_get(Name, Cols, Result) when is_list(Result) ->
+    %% Patch returned values
+    F = fun({Col, {value, Val}}) -> {value, externalize(Name, Col, Val)};
+	   ({_, Other}) ->          Other
+	end,
+    %% Merge column numbers and return values. there must be as much
+    %% return values as there are columns requested. And then patch all values
+    [F(R) || R <- lists:zip(Cols, Result)];
+externalize_get(_, _, Result) ->
+    Result. 
+
+externalize(vacmViewTreeFamilyTable, ?vacmViewTreeFamilyMask, Val) ->
+    imask2emask(Val);
+externalize(_, _, Val) ->
+    Val. 
+
 
 wrongValue(V) -> throw({wrongValue, V}).
 
@@ -1035,4 +1137,3 @@ error(Reason) ->
 
 config_err(F, A) ->
     snmpa_error:config_err("[VIEW-BASED-ACM-MIB]: " ++ F, A).
-
diff --git a/lib/snmp/src/agent/snmpa.erl b/lib/snmp/src/agent/snmpa.erl
index 14b93439df..ff7be54283 100644
--- a/lib/snmp/src/agent/snmpa.erl
+++ b/lib/snmp/src/agent/snmpa.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
@@ -39,8 +40,10 @@
 	 enum_to_int/2, enum_to_int/3,
 
 	 info/0, info/1, old_info_format/1, 
-	 load_mibs/1, load_mibs/2, 
-	 unload_mibs/1, unload_mibs/2, 
+	 load_mib/1, load_mib/2, 
+	 load_mibs/1, load_mibs/2, load_mibs/3, 
+	 unload_mib/1, unload_mib/2, 
+	 unload_mibs/1, unload_mibs/2, unload_mibs/3, 
 	 which_mibs/0, which_mibs/1, 
 	 whereis_mib/1, whereis_mib/2, 
 	 dump_mibs/0, dump_mibs/1,
@@ -83,11 +86,10 @@
 -export([add_agent_caps/2, del_agent_caps/1, get_agent_caps/0]).
 
 %% Audit Trail Log functions
--export([log_to_txt/1, 
-	 log_to_txt/2, log_to_txt/3, log_to_txt/4, 
-	 log_to_txt/5, log_to_txt/6, log_to_txt/7, 
-	 log_to_io/1,  log_to_io/2,  log_to_io/3, 
-	 log_to_io/4,  log_to_io/5,  log_to_io/6, 
+-export([log_to_txt/1, log_to_txt/2, log_to_txt/3, log_to_txt/4, 
+	 log_to_txt/5, log_to_txt/6, log_to_txt/7, log_to_txt/8, 
+	 log_to_io/1,  log_to_io/2,  log_to_io/3,  log_to_io/4, 
+	 log_to_io/5,  log_to_io/6,  log_to_io/7, 
 	 log_info/0, 
 	 change_log_size/1,
 	 get_log_type/0,    get_log_type/1, 
@@ -128,7 +130,8 @@
 -include("snmpa_internal.hrl").
 -include_lib("snmp/include/snmp_types.hrl"). % type of me needed. 
 
--define(DISCO_EXTRA_INFO, undefined).
+-define(DISCO_EXTRA_INFO,  undefined).
+-define(ATL_BLOCK_DEFAULT, true).
 
 
 %%-----------------------------------------------------------------
@@ -300,19 +303,75 @@ backup(Agent, BackupDir) ->
 dump_mibs()     -> snmpa_agent:dump_mibs(snmp_master_agent).
 dump_mibs(File) -> snmpa_agent:dump_mibs(snmp_master_agent, File).
 
+
+load_mib(Mib) ->
+    load_mib(snmp_master_agent, Mib).
+
+-spec load_mib(Agent :: pid() | atom(), Mib :: string()) ->
+    ok | {error, Reason :: already_loaded | term()}.
+
+load_mib(Agent, Mib) ->
+    case load_mibs(Agent, [Mib]) of
+	{error, {'load aborted at', Mib, Reason}} ->
+	    {error, Reason};
+	Else ->
+	    Else
+    end.
+
 load_mibs(Mibs) ->
-    load_mibs(snmp_master_agent, Mibs).
+    load_mibs(snmp_master_agent, Mibs, false).
 load_mibs(Agent, Mibs) when is_list(Mibs) -> 
-    snmpa_agent:load_mibs(Agent, Mibs).
+    snmpa_agent:load_mibs(Agent, Mibs, false);
+load_mibs(Mibs, Force) 
+  when is_list(Mibs) andalso ((Force =:= true) orelse (Force =:= false)) ->
+    load_mibs(snmp_master_agent, Mibs, Force).
+
+-spec load_mibs(Agent :: pid() | atom(), 
+		Mibs  :: [MibName :: string()], 
+		Force :: boolean()) ->
+    ok | {error, {'load aborted at', MibName :: string(), InternalReason :: already_loaded | term()}}.
+
+load_mibs(Agent, Mibs, Force) 
+  when is_list(Mibs) andalso ((Force =:= true) orelse (Force =:= false)) -> 
+    snmpa_agent:load_mibs(Agent, Mibs, Force).
+
+
+unload_mib(Mib) ->
+    unload_mib(snmp_master_agent, Mib).
+
+-spec unload_mib(Agent :: pid() | atom(), Mib :: string()) ->
+    ok | {error, Reason :: not_loaded | term()}.
+
+unload_mib(Agent, Mib) ->
+    case unload_mibs(Agent, [Mib]) of
+	{error, {'unload aborted at', Mib, Reason}} ->
+	    {error, Reason};
+	Else ->
+	    Else
+    end.
 
 unload_mibs(Mibs) ->
-    unload_mibs(snmp_master_agent, Mibs).
+    unload_mibs(snmp_master_agent, Mibs, false).
 unload_mibs(Agent, Mibs) when is_list(Mibs) -> 
-    snmpa_agent:unload_mibs(Agent, Mibs).
+    snmpa_agent:unload_mibs(Agent, Mibs);
+unload_mibs(Mibs, Force) 
+  when is_list(Mibs) andalso ((Force =:= true) orelse (Force =:= false)) ->
+    unload_mibs(snmp_master_agent, Mibs, Force).
+
+-spec unload_mibs(Agent :: pid() | atom(), 
+		  Mibs  :: [MibName :: string()], 
+		  Force :: boolean()) ->
+    ok | {error, {'unload aborted at', MibName :: string(), InternalReason :: not_loaded | term()}}.
+
+unload_mibs(Agent, Mibs, Force) 
+  when is_list(Mibs) andalso ((Force =:= true) orelse (Force =:= false)) ->
+    snmpa_agent:unload_mibs(Agent, Mibs, Force).
+
 
 which_mibs()      -> which_mibs(snmp_master_agent).
 which_mibs(Agent) -> snmpa_agent:which_mibs(Agent).
 
+
 whereis_mib(Mib) ->
     whereis_mib(snmp_master_agent, Mib).
 whereis_mib(Agent, Mib) when is_atom(Mib) ->
@@ -814,43 +873,207 @@ get_agent_caps() ->
 %%% Audit Trail Log functions 
 %%%-----------------------------------------------------------------
 
+-spec log_to_txt(LogDir :: snmp:dir()) ->
+    snmp:void().
+
 log_to_txt(LogDir) -> 
     log_to_txt(LogDir, []).
+
+-spec log_to_txt(LogDir :: snmp:dir(), 
+		 Block  :: boolean()) ->
+    snmp:void();
+                (LogDir :: snmp:dir(), 
+		 Mibs   :: [snmp:mib_name()]) ->
+    snmp:void().
+
+log_to_txt(LogDir, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    Mibs    = [], 
+    OutFile = "snmpa_log.txt",       
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block);
+
 log_to_txt(LogDir, Mibs) -> 
+    Block   = ?ATL_BLOCK_DEFAULT, 
     OutFile = "snmpa_log.txt",       
     LogName = ?audit_trail_log_name, 
     LogFile = ?audit_trail_log_file, 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block).
+
+-spec log_to_txt(LogDir :: snmp:dir(), 
+		 Mibs   :: [snmp:mib_name()], 
+		 Block  :: boolean()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    OutFile = "snmpa_log.txt", 
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block);
 log_to_txt(LogDir, Mibs, OutFile) -> 
+    Block   = ?ATL_BLOCK_DEFAULT, 
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 Block   :: boolean()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
     LogName = ?audit_trail_log_name, 
     LogFile = ?audit_trail_log_file, 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block);
 log_to_txt(LogDir, Mibs, OutFile, LogName) -> 
+    Block   = ?ATL_BLOCK_DEFAULT, 
     LogFile = ?audit_trail_log_file, 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 Block   :: boolean()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block);
 log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile) -> 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Block   :: boolean()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Start   :: snmp_log:log_time()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block);
 log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start) -> 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Block   :: boolean(), 
+		 Start   :: snmp_log:log_time()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Start   :: snmp_log:log_time(), 
+		 Stop    :: snmp_log:log_time()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start);
+
 log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop) -> 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Block   :: boolean(), 
+		 Start   :: snmp_log:log_time(), 
+		 Stop    :: snmp_log:log_time()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop) -> 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop).
 
 
 log_to_io(LogDir) -> 
     log_to_io(LogDir, []).
+
+log_to_io(LogDir, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    Mibs    = [], 
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block);
 log_to_io(LogDir, Mibs) -> 
+    Block   = ?ATL_BLOCK_DEFAULT, 
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block).
+
+log_to_io(LogDir, Mibs, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
     LogName = ?audit_trail_log_name, 
     LogFile = ?audit_trail_log_file, 
-    snmp:log_to_io(LogDir, Mibs, LogName, LogFile).
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block);
 log_to_io(LogDir, Mibs, LogName) -> 
+    Block   = ?ATL_BLOCK_DEFAULT, 
     LogFile = ?audit_trail_log_file, 
-    snmp:log_to_io(LogDir, Mibs, LogName, LogFile).
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block).
+
+log_to_io(LogDir, Mibs, LogName, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block);
 log_to_io(LogDir, Mibs, LogName, LogFile) -> 
-    snmp:log_to_io(LogDir, Mibs, LogName, LogFile).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block).
+
+log_to_io(LogDir, Mibs, LogName, LogFile, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block);
 log_to_io(LogDir, Mibs, LogName, LogFile, Start) -> 
-    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Start).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start).
+
+log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start);
 log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop) -> 
-    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop).
+
+log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop) -> 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop).
 
 
 log_info() ->
diff --git a/lib/snmp/src/agent/snmpa_acm.erl b/lib/snmp/src/agent/snmpa_acm.erl
index 42a0d4d6a3..de67df8a06 100644
--- a/lib/snmp/src/agent/snmpa_acm.erl
+++ b/lib/snmp/src/agent/snmpa_acm.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -279,7 +280,7 @@ validate_mib_view(Oid, MibView) ->
     end.
 
 get_largest_family([{SubTree, Mask, Type} | T], Oid, Res) ->
-    case check_mask(Oid, SubTree, Mask) of
+    case check_mask(Oid, SubTree, snmp_view_based_acm_mib:emask2imask(Mask)) of
 	true -> get_largest_family(T, Oid, add_res(length(SubTree), SubTree,
 						   Type, Res));
 	false -> get_largest_family(T, Oid, Res)
@@ -344,7 +345,7 @@ validate_all_mib_view([], _MibView) ->
 %% intelligent.
 %%-----------------------------------------------------------------
 is_definitely_not_in_mib_view(Oid, [{SubTree, Mask,?view_included}|T]) ->
-    case check_maybe_mask(Oid, SubTree, Mask) of
+    case check_maybe_mask(Oid, SubTree, snmp_view_based_acm_mib:emask2imask(Mask)) of
 	true -> false;
 	false -> is_definitely_not_in_mib_view(Oid, T)
     end;
diff --git a/lib/snmp/src/agent/snmpa_agent.erl b/lib/snmp/src/agent/snmpa_agent.erl
index c267ce5a70..458b88359b 100644
--- a/lib/snmp/src/agent/snmpa_agent.erl
+++ b/lib/snmp/src/agent/snmpa_agent.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
@@ -28,7 +29,8 @@
 %% External exports
 -export([start_link/4, start_link/5, stop/1]).
 -export([subagent_set/2, 
-	 load_mibs/2, unload_mibs/2, which_mibs/1, whereis_mib/2, info/1,
+	 load_mibs/3, unload_mibs/3, 
+	 which_mibs/1, whereis_mib/2, info/1,
 	 register_subagent/3, unregister_subagent/2,
 	 send_notification/3, 
          register_notification_filter/5,
@@ -71,7 +73,8 @@
 	 handle_pdu/8, worker/2, worker_loop/1, 
 	 do_send_trap/7, do_send_trap/8]).
 %% <BACKWARD-COMPAT>
--export([handle_pdu/7]).
+-export([handle_pdu/7, 
+	 load_mibs/2, unload_mibs/2]).
 %% </BACKWARD-COMPAT>
 
 -include("snmpa_internal.hrl").
@@ -528,12 +531,22 @@ subagent_set(SubAgent, Arguments) ->
 
 
 %% Called by administrator (not agent; deadlock would occur)
+%% <BACKWARD-COMPAT>
 load_mibs(Agent, Mibs) ->
-    call(Agent, {load_mibs, Mibs}).
+    load_mibs(Agent, Mibs, false).
+%% </BACKWARD-COMPAT>
+
+load_mibs(Agent, Mibs, Force) ->
+    call(Agent, {load_mibs, Mibs, Force}).
 
 %% Called by administrator (not agent; deadlock would occur)
+%% <BACKWARD-COMPAT>
 unload_mibs(Agent, Mibs) ->
-    call(Agent, {unload_mibs, Mibs}).
+    unload_mibs(Agent, Mibs, false).
+%% </BACKWARD-COMPAT>
+
+unload_mibs(Agent, Mibs, Force) ->
+    call(Agent, {unload_mibs, Mibs, Force}).
 
 which_mibs(Agent) ->
     call(Agent, which_mibs).
@@ -1216,13 +1229,25 @@ handle_call({unregister_subagent, SubTreeOid}, _From, S) ->
 	end,
     {reply, Reply, S};
 
+%% <BACKWARD-COMPAT>
 handle_call({load_mibs, Mibs}, _From, S) ->
     ?vlog("load mibs ~p", [Mibs]),
     {reply, snmpa_mib:load_mibs(get(mibserver), Mibs), S};
+%% </BACKWARD-COMPAT>
+
+handle_call({load_mibs, Mibs, Force}, _From, S) ->
+    ?vlog("[~w] load mibs ~p", [Force, Mibs]),
+    {reply, snmpa_mib:load_mibs(get(mibserver), Mibs, Force), S};
 
+%% <BACKWARD-COMPAT>
 handle_call({unload_mibs, Mibs}, _From, S) ->
     ?vlog("unload mibs ~p", [Mibs]),
     {reply, snmpa_mib:unload_mibs(get(mibserver), Mibs), S};
+%% </BACKWARD-COMPAT>
+
+handle_call({unload_mibs, Mibs, Force}, _From, S) ->
+    ?vlog("[~w] unload mibs ~p", [Force, Mibs]),
+    {reply, snmpa_mib:unload_mibs(get(mibserver), Mibs, Force), S};
 
 handle_call(which_mibs, _From, S) ->
     ?vlog("which mibs", []),
@@ -2488,10 +2513,19 @@ handle_mib_of(MibServer, Oid) ->
 %% Func: process_msg/7
 %% Returns: RePdu
 %%-----------------------------------------------------------------
-process_msg(MibView, Vsn, Pdu, PduMS, Community, {Ip, Udp}, ContextName, 
-	    GbMaxVBs) ->
+process_msg(
+  MibView, Vsn, Pdu, PduMS, Community,
+  SourceAddress, ContextName, GbMaxVBs) ->
     #pdu{request_id = ReqId} = Pdu,
-    put(snmp_address, {tuple_to_list(Ip), Udp}),
+    put(
+      snmp_address,
+      case SourceAddress of
+	  {Domain, _} when is_atom(Domain) ->
+	      SourceAddress;
+	  {Ip, Port} when is_integer(Port) ->
+	      %% Legacy transport domain
+	      {tuple_to_list(Ip), Port}
+      end),
     put(snmp_request_id, ReqId),
     put(snmp_community, Community),
     put(snmp_context, ContextName),
diff --git a/lib/snmp/src/agent/snmpa_agent_sup.erl b/lib/snmp/src/agent/snmpa_agent_sup.erl
index 1c6632e065..0a5116b2d0 100644
--- a/lib/snmp/src/agent/snmpa_agent_sup.erl
+++ b/lib/snmp/src/agent/snmpa_agent_sup.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_app.erl b/lib/snmp/src/agent/snmpa_app.erl
index 4e65e8e283..86ff145e93 100644
--- a/lib/snmp/src/agent/snmpa_app.erl
+++ b/lib/snmp/src/agent/snmpa_app.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_atl.hrl b/lib/snmp/src/agent/snmpa_atl.hrl
index ec6beb3542..d07c850891 100644
--- a/lib/snmp/src/agent/snmpa_atl.hrl
+++ b/lib/snmp/src/agent/snmpa_atl.hrl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_authentication_service.erl b/lib/snmp/src/agent/snmpa_authentication_service.erl
index b5ff8460c6..e4238a8384 100644
--- a/lib/snmp/src/agent/snmpa_authentication_service.erl
+++ b/lib/snmp/src/agent/snmpa_authentication_service.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_conf.erl b/lib/snmp/src/agent/snmpa_conf.erl
index c17a6abbd7..94325a8ed6 100644
--- a/lib/snmp/src/agent/snmpa_conf.erl
+++ b/lib/snmp/src/agent/snmpa_conf.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -47,7 +48,7 @@
 	 read_standard_config/1, 
 
 	 %% target_addr.conf
-	 target_addr_entry/5, target_addr_entry/6, 
+	 target_addr_entry/5, target_addr_entry/6,  target_addr_entry/7,
 	 target_addr_entry/8, target_addr_entry/10, target_addr_entry/11, 
 	 write_target_addr_config/2, write_target_addr_config/3, 
 	 append_target_addr_config/2, 
@@ -108,36 +109,25 @@ write_agent_config(Dir, Conf) ->
     Hdr = header() ++ Comment, 
     write_agent_config(Dir, Hdr, Conf).
 
-write_agent_config(Dir, Hdr, Conf) 
+write_agent_config(Dir, Hdr, Conf)
   when is_list(Dir) and is_list(Hdr) and is_list(Conf) ->
-    Verify = fun()   -> verify_agent_conf(Conf)          end,
-    Write  = fun(Fd) -> write_agent_conf(Fd, Hdr, Conf)  end,
-    write_config_file(Dir, "agent.conf", Verify, Write).
-    
+    Order = fun snmp_framework_mib:order_agent/2,
+    Check = fun snmp_framework_mib:check_agent/2,
+    Write = fun (Fd, Entries) -> write_agent_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, "agent.conf", Order, Check, Write, Conf).
 
-append_agent_config(Dir, Conf) 
+append_agent_config(Dir, Conf)
   when is_list(Dir) and is_list(Conf) ->
-    Verify = fun()   -> verify_agent_conf(Conf)          end,
-    Write  = fun(Fd) -> write_agent_conf(Fd, Conf)  end,
-    append_config_file(Dir, "agent.conf", Verify, Write).
-    
+    Order = fun snmp_framework_mib:order_agent/2,
+    Check = fun snmp_framework_mib:check_agent/2,
+    Write = fun write_agent_conf/2,
+    append_config_file(Dir, "agent.conf", Order, Check, Write, Conf).
 
 read_agent_config(Dir) ->
-    Verify = fun(Entry) -> verify_agent_conf_entry(Entry) end,
-    read_config_file(Dir, "agent.conf", Verify).
+    Order = fun snmp_framework_mib:order_agent/2,
+    Check = fun snmp_framework_mib:check_agent/2,
+    read_config_file(Dir, "agent.conf", Order, Check).
 
-    
-verify_agent_conf([]) ->
-    ok;
-verify_agent_conf([H|T]) ->
-    verify_agent_conf_entry(H),
-    verify_agent_conf(T);
-verify_agent_conf(X) ->
-    error({bad_agent_config, X}).
-
-verify_agent_conf_entry(Entry) ->
-    ok = snmp_framework_mib:check_agent(Entry),
-    ok.
 
 write_agent_conf(Fd, "", Conf) ->
     write_agent_conf(Fd, Conf);
@@ -151,6 +141,10 @@ write_agent_conf(Fd, [H|T]) ->
     do_write_agent_conf(Fd, H),
     write_agent_conf(Fd, T).
 
+do_write_agent_conf(Fd, {intAgentTransports = Tag, Val}) ->
+    io:format(Fd, "{~w, ~w}.~n", [Tag, Val]);
+do_write_agent_conf(Fd, {intAgentTransportDomain = Tag, Val}) ->
+    io:format(Fd, "{~w, ~w}.~n", [Tag, Val]);
 do_write_agent_conf(Fd, {intAgentIpAddress = Tag, Val}) ->
     io:format(Fd, "{~w, ~w}.~n", [Tag, Val]);
 do_write_agent_conf(Fd, {intAgentUDPPort = Tag, Val} ) ->
@@ -191,34 +185,27 @@ write_context_config(Dir, Conf) ->
 
 write_context_config(Dir, Hdr, Conf) 
   when is_list(Dir) and is_list(Hdr) and is_list(Conf) ->
-    Verify = fun()   -> verify_context_conf(Conf)         end,
-    Write  = fun(Fd) -> write_context_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, "context.conf", Verify, Write).
-    
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_context/2,
+    Write = fun (Fd, Entries) -> write_context_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, "context.conf", Order, Check, Write, Conf).
 
-append_context_config(Dir, Conf) 
+append_context_config(Dir, Conf)
   when is_list(Dir) and is_list(Conf) ->
-    Verify = fun()   -> verify_context_conf(Conf)         end,
-    Write  = fun(Fd) -> write_context_conf(Fd, Conf) end,
-    append_config_file(Dir, "context.conf", Verify, Write).
-    
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_context/2,
+    Write = fun write_context_conf/2,
+    append_config_file(Dir, "context.conf", Order, Check, Write, Conf).
 
 read_context_config(Dir) ->
-    Verify = fun(Entry) -> verify_context_conf_entry(Entry) end,
-    read_config_file(Dir, "context.conf", Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_context/2,
+    read_config_file(Dir, "context.conf", Order, Check).
 
-    
-verify_context_conf([]) ->
-    ok;
-verify_context_conf([H|T]) ->
-    verify_context_conf_entry(H),
-    verify_context_conf(T);
-verify_context_conf(X) ->
-    error({error_context_config, X}).
-
-verify_context_conf_entry(Context) ->
-    {ok, _} = snmp_framework_mib:check_context(Context),
-    ok.
+
+check_context(Entry, State) ->
+    {check_ok(snmp_framework_mib:check_context(Entry)),
+     State}.
 
 write_context_conf(Fd, "", Conf) ->
     write_context_conf(Fd, Conf);
@@ -271,36 +258,29 @@ write_community_config(Dir, Conf) ->
     Hdr = header() ++ Comment,
     write_community_config(Dir, Hdr, Conf).
 
-write_community_config(Dir, Hdr, Conf) 
+write_community_config(Dir, Hdr, Conf)
   when is_list(Dir) and is_list(Hdr) and is_list(Conf) ->
-    Verify = fun()   -> verify_community_conf(Conf)         end,
-    Write  = fun(Fd) -> write_community_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, "community.conf", Verify, Write).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_community/2,
+    Write = fun (Fd, Entries) -> write_community_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, "community.conf", Order, Check, Write, Conf).
 
-
-append_community_config(Dir, Conf) 
+append_community_config(Dir, Conf)
   when is_list(Dir) and is_list(Conf) ->
-    Verify = fun()   -> verify_community_conf(Conf)         end,
-    Write  = fun(Fd) -> write_community_conf(Fd, Conf) end,
-    append_config_file(Dir, "community.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_community/2,
+    Write = fun write_community_conf/2,
+    append_config_file(Dir, "community.conf", Order, Check, Write, Conf).
 
 read_community_config(Dir) ->
-    Verify = fun(Entry) -> verify_community_conf_entry(Entry) end,
-    read_config_file(Dir, "community.conf", Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_community/2,
+    read_config_file(Dir, "community.conf", Order, Check).
 
-    
-verify_community_conf([]) ->
-    ok;
-verify_community_conf([H|T]) ->
-    verify_community_conf_entry(H),
-    verify_community_conf(T);
-verify_community_conf(X) ->
-    error({invalid_community_config, X}).
-
-verify_community_conf_entry(Context) ->
-    {ok, _} = snmp_community_mib:check_community(Context),
-    ok.
+
+check_community(Entry, State) ->
+    {check_ok(snmp_community_mib:check_community(Entry)),
+     State}.
 
 write_community_conf(Fd, "", Conf) ->
     write_community_conf(Fd, Conf);
@@ -309,14 +289,17 @@ write_community_conf(Fd, Hdr, Conf) ->
     write_community_conf(Fd, Conf).
 
 write_community_conf(Fd, Conf) ->
-    Fun = fun({Idx, Name, SecName, CtxName, TranspTag}) ->
-		  io:format(Fd, "{\"~s\", \"~s\", \"~s\", \"~s\", \"~s\"}.~n",
-			    [Idx, Name, SecName, CtxName, TranspTag]);
+    Fun =
+	fun({Idx, Name, SecName, CtxName, TranspTag}) ->
+		io:format(
+		  Fd,
+		  "{\"~s\", \"~s\", \"~s\", \"~s\", \"~s\"}.~n",
+		  [Idx, Name, SecName, CtxName, TranspTag]);
 	     (Crap) ->
-		  error({bad_community_config, Crap})
+		error({bad_community_config, Crap})
 	end,
     lists:foreach(Fun, Conf).
-		
+
 
 %%
 %% ------ standard.conf ------
@@ -343,40 +326,29 @@ write_standard_config(Dir, Conf) ->
     Hdr = header() ++ Comment,
     write_standard_config(Dir, Hdr, Conf).
 
-write_standard_config(Dir, Hdr, Conf) 
+write_standard_config(Dir, Hdr, Conf)
   when is_list(Dir) and is_list(Hdr) and is_list(Conf) ->
-    Verify = fun()   -> verify_standard_conf(Conf)         end,
-    Write  = fun(Fd) -> write_standard_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, "standard.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_standard/2,
+    Write = fun (Fd, Entries) -> write_standard_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, "standard.conf", Order, Check, Write, Conf).
 
-append_standard_config(Dir, Conf) 
+append_standard_config(Dir, Conf)
   when is_list(Dir) and is_list(Conf) ->
-    Verify = fun()   -> verify_standard_conf(Conf)    end,
-    Write  = fun(Fd) -> write_standard_conf(Fd, Conf) end,
-    append_config_file(Dir, "standard.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_standard/2,
+    Write = fun write_standard_conf/2,
+    append_config_file(Dir, "standard.conf", Order, Check, Write, Conf).
 
 read_standard_config(Dir) ->
-    Verify = fun(Entry) -> verify_standard_conf_entry(Entry) end,
-    read_config_file(Dir, "standard.conf", Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_standard/2,
+    read_config_file(Dir, "standard.conf", Order, Check).
 
-    
-verify_standard_conf([]) ->
-    ok;
-verify_standard_conf([H|T]) ->
-    verify_standard_conf_entry(H),
-    verify_standard_conf(T);
-verify_standard_conf(X) ->
-    error({bad_standard_config, X}).
-
-verify_standard_conf_entry(Std) ->
-    case snmp_standard_mib:check_standard(Std) of
-	ok ->
-	    ok;
-	{ok, _} ->
-	    ok
-    end.
+
+check_standard(Entry, State) ->
+    {check_ok(snmp_standard_mib:check_standard(Entry)),
+     State}.
 
 write_standard_conf(Fd, "", Conf) ->
     write_standard_conf(Fd, Conf);
@@ -410,72 +382,48 @@ do_write_standard_conf(_Fd, Tag, Val) ->
 %% ------ target_addr.conf ------
 %%
 
-target_addr_entry(Name, 
-		  Ip, 
-		  TagList, 
-		  ParamsName, 
-		  EngineId) ->
+target_addr_entry(
+  Name, Ip, TagList, ParamsName, EngineId) ->
     target_addr_entry(Name, Ip, TagList, ParamsName, EngineId, []).
 
-target_addr_entry(Name, 
-		  Ip, 
-		  TagList, 
-		  ParamsName, 
-		  EngineId,
-		  TMask) ->
-    target_addr_entry(Name, Ip, 162, TagList, 
-		      ParamsName, EngineId, 
-		      TMask, 2048).
-
-target_addr_entry(Name, 
-		  Ip, 
-		  Udp, 
-		  TagList, 
-		  ParamsName, 
-		  EngineId,
-		  TMask, 
-		  MaxMessageSize) ->
-    target_addr_entry(Name, Ip, Udp, 1500, 3, TagList, 
-		      ParamsName, EngineId, 
-		      TMask, MaxMessageSize).
-
-target_addr_entry(Name, 
-		  Ip, 
-		  Udp, 
-		  Timeout, 
-		  RetryCount, 
-		  TagList, 
-		  ParamsName, 
-		  EngineId,
-		  TMask, 
-		  MaxMessageSize) ->
-    target_addr_entry(Name, snmp_target_mib:default_domain(), Ip, Udp, 
-		      Timeout, RetryCount, TagList, 
-		      ParamsName, EngineId, 
-		      TMask, MaxMessageSize).
-
-target_addr_entry(Name, 
-		  Domain, 
-		  Ip, 
-		  Udp, 
-		  Timeout, 
-		  RetryCount, 
-		  TagList, 
-		  ParamsName, 
-		  EngineId,
-		  TMask, 
-		  MaxMessageSize) ->
-    {Name, 
-     Domain, 
-     Ip, 
-     Udp, 
-     Timeout, 
-     RetryCount, 
-     TagList, 
-     ParamsName, 
-     EngineId, 
-     TMask, 
-     MaxMessageSize}.
+target_addr_entry(
+  Name, Domain, Addr, TagList,
+  ParamsName, EngineId) when is_atom(Domain) ->
+    target_addr_entry(
+      Name, Domain, Addr, TagList,
+      ParamsName, EngineId, []);
+target_addr_entry(
+  Name, Ip, TagList, ParamsName,
+  EngineId, TMask) ->
+    target_addr_entry(
+      Name, Ip, 162, TagList, ParamsName,
+      EngineId, TMask, 2048).
+
+target_addr_entry(
+  Name, Domain_or_Ip, Addr_or_Port, TagList,
+  ParamsName, EngineId, TMask) ->
+    target_addr_entry(
+      Name, Domain_or_Ip, Addr_or_Port, TagList,
+      ParamsName, EngineId, TMask, 2048).
+
+target_addr_entry(
+  Name, Domain_or_Ip, Addr_or_Port, TagList,
+  ParamsName, EngineId, TMask, MaxMessageSize) ->
+    target_addr_entry(
+      Name, Domain_or_Ip, Addr_or_Port, 1500, 3, TagList,
+      ParamsName, EngineId, TMask, MaxMessageSize).
+
+target_addr_entry(
+  Name, Domain_or_Ip, Addr_or_Port, Timeout, RetryCount, TagList,
+  ParamsName, EngineId, TMask, MaxMessageSize) ->
+    {Name, Domain_or_Ip, Addr_or_Port, Timeout, RetryCount, TagList,
+     ParamsName, EngineId, TMask, MaxMessageSize}.
+
+target_addr_entry(
+  Name, Domain, Ip, Udp, Timeout, RetryCount, TagList,
+  ParamsName, EngineId,TMask, MaxMessageSize) ->
+    {Name, Domain, Ip, Udp, Timeout, RetryCount, TagList,
+     ParamsName, EngineId, TMask, MaxMessageSize}.
 
 
 write_target_addr_config(Dir, Conf) ->
@@ -504,37 +452,29 @@ write_target_addr_config(Dir, Conf) ->
     Hdr = header() ++ Comment,
     write_target_addr_config(Dir, Hdr, Conf).
 
-write_target_addr_config(Dir, Hdr, Conf) 
+write_target_addr_config(Dir, Hdr, Conf)
   when is_list(Dir) and is_list(Hdr) and is_list(Conf) ->
-    Verify = fun()   -> verify_target_addr_conf(Conf)         end,
-    Write  = fun(Fd) -> write_target_addr_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, "target_addr.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_target_addr/2,
+    Write = fun (Fd, Entries) -> write_target_addr_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, "target_addr.conf", Order, Check, Write, Conf).
 
-
-append_target_addr_config(Dir, Conf) 
+append_target_addr_config(Dir, Conf)
   when is_list(Dir) and is_list(Conf) ->
-    Verify = fun()   -> verify_target_addr_conf(Conf)    end,
-    Write  = fun(Fd) -> write_target_addr_conf(Fd, Conf) end,
-    append_config_file(Dir, "target_addr.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_target_addr/2,
+    Write = fun write_target_addr_conf/2,
+    append_config_file(Dir, "target_addr.conf", Order, Check, Write, Conf).
 
 read_target_addr_config(Dir) ->
-    Verify = fun(Entry) -> verify_target_addr_conf_entry(Entry) end,
-    read_config_file(Dir, "target_addr.conf", Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_target_addr/2,
+    read_config_file(Dir, "target_addr.conf", Order, Check).
 
-        
-verify_target_addr_conf([]) ->
-    ok;
-verify_target_addr_conf([H|T]) ->
-    verify_target_addr_conf_entry(H),
-    verify_target_addr_conf(T);
-verify_target_addr_conf(X) ->
-    error({bad_target_addr_config, X}).
-
-verify_target_addr_conf_entry(Entry) ->
-    {ok, _} = snmp_target_mib:check_target_addr(Entry),
-    ok.
+
+check_target_addr(Entry, State) ->
+    {check_ok(snmp_target_mib:check_target_addr(Entry)),
+     State}.
 
 write_target_addr_conf(Fd, "", Conf) ->
     write_target_addr_conf(Fd, Conf);
@@ -547,29 +487,41 @@ write_target_addr_conf(Fd, Conf) ->
     lists:foreach(Fun, Conf),
     ok.
 
-do_write_target_addr_conf(Fd,
-			  {Name, 
-			   Ip, Udp,
-			   Timeout, RetryCount, TagList,
-			   ParamsName, EngineId,
-			   TMask, MaxMessageSize}) ->
-    Domain = snmp_target_mib:default_domain(), 
-    do_write_target_addr_conf(Fd,
-			      {Name, 
-			       Domain, Ip, Udp,
-			       Timeout, RetryCount, TagList,
-			       ParamsName, EngineId,
-			       TMask, MaxMessageSize});
-do_write_target_addr_conf(Fd,
-			  {Name, 
-			   Domain, Ip, Udp,
-			   Timeout, RetryCount, TagList,
-			   ParamsName, EngineId,
-			   TMask, MaxMessageSize}) ->
-    io:format(Fd, 
-	      "{\"~s\", ~w, ~w, ~w, ~w, ~w, \"~s\", \"~s\", \"~s\", ~w, ~w}.~n",
-              [Name, Domain, Ip, Udp, Timeout, RetryCount, TagList,
-               ParamsName, EngineId, TMask, MaxMessageSize]);
+do_write_target_addr_conf(
+  Fd,
+  {Name, Domain, Address, Timeout, RetryCount, TagList,
+   ParamsName, EngineId, TMask, MaxMessageSize})
+  when is_atom(Domain) ->
+    io:format(
+      Fd,
+      "{\"~s\", ~w, ~w, ~w, ~w, \"~s\", \"~s\", \"~s\", ~w, ~w}.~n",
+      [Name, Domain, Address, Timeout, RetryCount, TagList,
+       ParamsName, EngineId, TMask, MaxMessageSize]);
+do_write_target_addr_conf(
+  Fd,
+  {Name, Ip, Udp, Timeout, RetryCount, TagList,
+   ParamsName, EngineId, TMask, MaxMessageSize})
+  when is_integer(Udp) ->
+    Domain = snmp_target_mib:default_domain(),
+    Address = {Ip, Udp},
+    do_write_target_addr_conf(
+      Fd,
+      {Name, Domain, Address, Timeout, RetryCount, TagList,
+       ParamsName, EngineId, TMask, MaxMessageSize});
+do_write_target_addr_conf(
+  _Fd,
+  {_Name, Domain, Address, _Timeout, _RetryCount, _TagList,
+   _ParamsName, _EngineId, _TMask, _MaxMessageSize}) ->
+    error({bad_address, {Domain, Address}});
+do_write_target_addr_conf(
+  Fd,
+  {Name, Domain, Ip, Udp, Timeout, RetryCount, TagList,
+   ParamsName, EngineId, TMask, MaxMessageSize}) ->
+    Address = {Ip, Udp},
+    do_write_target_addr_conf(
+      Fd,
+      {Name, Domain, Address, Timeout, RetryCount, TagList,
+       ParamsName, EngineId, TMask, MaxMessageSize});
 do_write_target_addr_conf(_Fd, Crap) ->
     error({bad_target_addr_config, Crap}).
 
@@ -613,34 +565,27 @@ write_target_params_config(Dir, Conf) ->
 
 write_target_params_config(Dir, Hdr, Conf)
   when is_list(Dir) and is_list(Hdr) and is_list(Conf) ->
-    Verify = fun()   -> verify_target_params_conf(Conf)         end,
-    Write  = fun(Fd) -> write_target_params_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, "target_params.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_target_params/2,
+    Write = fun (Fd, Entries) -> write_target_params_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, "target_params.conf", Order, Check, Write, Conf).
 
 append_target_params_config(Dir, Conf)
   when is_list(Dir) and is_list(Conf) ->
-    Verify = fun()   -> verify_target_params_conf(Conf)    end,
-    Write  = fun(Fd) -> write_target_params_conf(Fd, Conf) end,
-    append_config_file(Dir, "target_params.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_target_params/2,
+    Write = fun write_target_params_conf/2,
+    append_config_file(Dir, "target_params.conf", Order, Check, Write, Conf).
 
 read_target_params_config(Dir) ->
-    Verify = fun(Entry) -> verify_target_params_conf_entry(Entry) end,
-    read_config_file(Dir, "target_params.conf", Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_target_params/2,
+    read_config_file(Dir, "target_params.conf", Order, Check).
 
 
-verify_target_params_conf([]) ->
-    ok;
-verify_target_params_conf([H|T]) ->
-    verify_target_params_conf_entry(H),
-    verify_target_params_conf(T);
-verify_target_params_conf(X) ->
-    error({bad_target_params_config, X}).
-
-verify_target_params_conf_entry(Entry) ->
-    {ok, _} = snmp_target_mib:check_target_params(Entry),
-    ok.
+check_target_params(Entry, State) ->
+    {check_ok(snmp_target_mib:check_target_params(Entry)),
+     State}.
 
 write_target_params_conf(Fd, "", Conf) ->
     write_target_params_conf(Fd, Conf);
@@ -685,34 +630,27 @@ write_notify_config(Dir, Conf) ->
 
 write_notify_config(Dir, Hdr, Conf)
   when is_list(Dir) and is_list(Hdr) and is_list(Conf) ->
-    Verify = fun()   -> verify_notify_conf(Conf)         end,
-    Write  = fun(Fd) -> write_notify_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, "notify.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_notify/2,
+    Write = fun (Fd, Entries) -> write_notify_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, "notify.conf", Order, Check, Write, Conf).
 
 append_notify_config(Dir, Conf)
   when is_list(Dir) and is_list(Conf) ->
-    Verify = fun()   -> verify_notify_conf(Conf)    end,
-    Write  = fun(Fd) -> write_notify_conf(Fd, Conf) end,
-    append_config_file(Dir, "notify.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_notify/2,
+    Write = fun write_notify_conf/2,
+    append_config_file(Dir, "notify.conf", Order, Check, Write, Conf).
 
 read_notify_config(Dir) ->
-    Verify = fun(Entry) -> verify_notify_conf_entry(Entry) end,
-    read_config_file(Dir, "notify.conf", Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_notify/2,
+    read_config_file(Dir, "notify.conf", Order, Check).
 
 
-verify_notify_conf([]) ->
-    ok;
-verify_notify_conf([H|T]) ->
-    verify_notify_conf_entry(H),
-    verify_notify_conf(T);
-verify_notify_conf(X) ->
-    error({bad_notify_config, X}).
-
-verify_notify_conf_entry(Entry) ->
-    {ok, _} = snmp_notification_mib:check_notify(Entry),
-    ok.
+check_notify(Entry, State) ->
+    {check_ok(snmp_notification_mib:check_notify(Entry)),
+     State}.
 
 write_notify_conf(Fd, "", Conf) ->
     write_notify_conf(Fd, Conf);
@@ -781,34 +719,27 @@ write_usm_config(Dir, Conf) ->
 
 write_usm_config(Dir, Hdr, Conf)
   when is_list(Dir) and is_list(Hdr) and is_list(Conf) ->
-    Verify = fun()   -> verify_usm_conf(Conf)         end,
-    Write  = fun(Fd) -> write_usm_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, "usm.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_usm/2,
+    Write = fun (Fd, Entries) -> write_usm_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, "usm.conf", Order, Check, Write, Conf).
 
 append_usm_config(Dir, Conf)
   when is_list(Dir) and is_list(Conf) ->
-    Verify = fun()   -> verify_usm_conf(Conf)    end,
-    Write  = fun(Fd) -> write_usm_conf(Fd, Conf) end,
-    append_config_file(Dir, "usm.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_usm/2,
+    Write = fun write_usm_conf/2,
+    append_config_file(Dir, "usm.conf", Order, Check, Write, Conf).
 
 read_usm_config(Dir) ->
-    Verify = fun(Entry) -> verify_usm_conf_entry(Entry) end,
-    read_config_file(Dir, "usm.conf", Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_usm/2,
+    read_config_file(Dir, "usm.conf", Order, Check).
 
 
-verify_usm_conf([]) ->
-    ok;
-verify_usm_conf([H|T]) ->
-    verify_usm_conf_entry(H),
-    verify_usm_conf(T);
-verify_usm_conf(X) ->
-    error({bad_usm_conf, X}).
-
-verify_usm_conf_entry(Entry) ->
-    {ok, _} = snmp_user_based_sm_mib:check_usm(Entry),
-    ok.
+check_usm(Entry, State) ->
+    {check_ok(snmp_user_based_sm_mib:check_usm(Entry)),
+     State}.
 
 write_usm_conf(Fd, "", Conf) ->
     write_usm_conf(Fd, Conf);
@@ -820,11 +751,12 @@ write_usm_conf(Fd, Conf) ->
     Fun = fun(Entry) -> do_write_usm_conf(Fd, Entry) end,
     lists:foreach(Fun, Conf).
 
-do_write_usm_conf(Fd,
-		  {EngineID, UserName, SecName, Clone,
-		   AuthP, AuthKeyC, OwnAuthKeyC,
-		   PrivP, PrivKeyC, OwnPrivKeyC,
-		   Public, AuthKey, PrivKey}) ->
+do_write_usm_conf(
+  Fd,
+  {EngineID, UserName, SecName, Clone,
+   AuthP, AuthKeyC, OwnAuthKeyC,
+   PrivP, PrivKeyC, OwnPrivKeyC,
+   Public, AuthKey, PrivKey}) ->
     io:format(Fd, "{", []),
     io:format(Fd, "\"~s\", ", [EngineID]),
     io:format(Fd, "\"~s\", ", [UserName]),
@@ -890,34 +822,27 @@ write_vacm_config(Dir, Conf) ->
 
 write_vacm_config(Dir, Hdr, Conf)
   when is_list(Dir) and is_list(Hdr) and is_list(Conf) ->
-    Verify = fun()   -> verify_vacm_conf(Conf)         end,
-    Write  = fun(Fd) -> write_vacm_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, "vacm.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_vacm/2,
+    Write = fun (Fd, Entries) -> write_vacm_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, "vacm.conf", Order, Check, Write, Conf).
 
 append_vacm_config(Dir, Conf)
   when is_list(Dir) and is_list(Conf) ->
-    Verify = fun()   -> verify_vacm_conf(Conf)    end,
-    Write  = fun(Fd) -> write_vacm_conf(Fd, Conf) end,
-    append_config_file(Dir, "vacm.conf", Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_vacm/2,
+    Write = fun write_vacm_conf/2,
+    append_config_file(Dir, "vacm.conf", Order, Check, Write, Conf).
 
 read_vacm_config(Dir) ->
-    Verify = fun(Entry) -> verify_vacm_conf_entry(Entry) end,
-    read_config_file(Dir, "vacm.conf", Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_vacm/2,
+    read_config_file(Dir, "vacm.conf", Order, Check).
 
 
-verify_vacm_conf([]) ->
-    ok;
-verify_vacm_conf([H|T]) ->
-    verify_vacm_conf_entry(H),
-    verify_vacm_conf(T);
-verify_vacm_conf(X) ->
-    error({bad_vacm_conf, X}).
-
-verify_vacm_conf_entry(Entry) ->
-    {ok, _} = snmp_view_based_acm_mib:check_vacm(Entry),
-    ok.
+check_vacm(Entry, State) ->
+    {check_ok(snmp_view_based_acm_mib:check_vacm(Entry)),
+     State}.
 
 write_vacm_conf(Fd, "", Conf) ->
     write_vacm_conf(Fd, Conf);
@@ -929,49 +854,60 @@ write_vacm_conf(Fd, Conf) ->
     Fun = fun(Entry) -> do_write_vacm_conf(Fd, Entry) end,
     lists:foreach(Fun, Conf).
 
-do_write_vacm_conf(Fd,
-              {vacmSecurityToGroup,
-               SecModel, SecName, GroupName}) ->
-    io:format(Fd, "{vacmSecurityToGroup, ~w, \"~s\", \"~s\"}.~n",
-              [SecModel, SecName, GroupName]);
-do_write_vacm_conf(Fd,
-              {vacmAccess,
-               GroupName, Prefix, SecModel, SecLevel, Match, RV, WV, NV}) ->
-    io:format(Fd, "{vacmAccess, \"~s\", \"~s\", ~w, ~w, ~w, "
-              "\"~s\", \"~s\", \"~s\"}.~n",
-              [GroupName, Prefix, SecModel, SecLevel,
-               Match, RV, WV, NV]);
-do_write_vacm_conf(Fd,
-              {vacmViewTreeFamily,
-               ViewIndex, ViewSubtree, ViewStatus, ViewMask}) ->
-    io:format(Fd, "{vacmViewTreeFamily, \"~s\", ~w, ~w, ~w}.~n",
-              [ViewIndex, ViewSubtree, ViewStatus, ViewMask]);
+do_write_vacm_conf(
+  Fd,
+  {vacmSecurityToGroup,
+   SecModel, SecName, GroupName}) ->
+    io:format(
+      Fd, "{vacmSecurityToGroup, ~w, \"~s\", \"~s\"}.~n",
+      [SecModel, SecName, GroupName]);
+do_write_vacm_conf(
+  Fd,
+  {vacmAccess,
+   GroupName, Prefix, SecModel, SecLevel, Match, RV, WV, NV}) ->
+    io:format(
+      Fd, "{vacmAccess, \"~s\", \"~s\", ~w, ~w, ~w, "
+      "\"~s\", \"~s\", \"~s\"}.~n",
+      [GroupName, Prefix, SecModel, SecLevel,
+       Match, RV, WV, NV]);
+do_write_vacm_conf(
+  Fd,
+  {vacmViewTreeFamily,
+   ViewIndex, ViewSubtree, ViewStatus, ViewMask}) ->
+    io:format(
+      Fd, "{vacmViewTreeFamily, \"~s\", ~w, ~w, ~w}.~n",
+      [ViewIndex, ViewSubtree, ViewStatus, ViewMask]);
 do_write_vacm_conf(_Fd, Crap) ->
     error({bad_vacm_config, Crap}).
 
 
 %% ---- config file wrapper functions ----
 
-write_config_file(Dir, File, Verify, Write) ->
-    snmp_config:write_config_file(Dir, File, Verify, Write).
+write_config_file(Dir, File, Order, Check, Write, Conf) ->
+    snmp_config:write_config_file(Dir, File, Order, Check, Write, Conf).
 
-append_config_file(Dir, File, Verify, Write) ->
-    snmp_config:append_config_file(Dir, File, Verify, Write).
+append_config_file(Dir, File, Order, Check, Write, Conf) ->
+    snmp_config:append_config_file(Dir, File, Order, Check, Write, Conf).
 
-read_config_file(Dir, File, Verify) ->
-    snmp_config:read_config_file(Dir, File, Verify).
+read_config_file(Dir, File, Order, Check) ->
+    snmp_config:read_config_file(Dir, File, Order, Check).
 
 
 %% ---- config file utility functions ----
 
+check_ok(ok) ->
+    ok;
+check_ok({ok, _}) ->
+    ok.
+
 header() ->
     {Y,Mo,D} = date(),
     {H,Mi,S} = time(),
-    io_lib:format("%% This file was generated by "
-		  "~w (version-~s) ~w-~2.2.0w-~2.2.0w "
-		  "~2.2.0w:~2.2.0w:~2.2.0w\n",
-		  [?MODULE, ?version, Y, Mo, D, H, Mi, S]).
-
+    io_lib:format(
+      "%% This file was generated by "
+      "~w (version-~s) ~w-~2.2.0w-~2.2.0w "
+      "~2.2.0w:~2.2.0w:~2.2.0w\n",
+      [?MODULE, ?version, Y, Mo, D, H, Mi, S]).
 
 error(R) ->
     throw({error, R}).
diff --git a/lib/snmp/src/agent/snmpa_discovery_handler.erl b/lib/snmp/src/agent/snmpa_discovery_handler.erl
index cf38583054..ffdd6aca1e 100644
--- a/lib/snmp/src/agent/snmpa_discovery_handler.erl
+++ b/lib/snmp/src/agent/snmpa_discovery_handler.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2009. All Rights Reserved.
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_discovery_handler_default.erl b/lib/snmp/src/agent/snmpa_discovery_handler_default.erl
index 12a27993ab..8bd8d1973e 100644
--- a/lib/snmp/src/agent/snmpa_discovery_handler_default.erl
+++ b/lib/snmp/src/agent/snmpa_discovery_handler_default.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2009. All Rights Reserved.
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_error.erl b/lib/snmp/src/agent/snmpa_error.erl
index db2b8d0178..804c850593 100644
--- a/lib/snmp/src/agent/snmpa_error.erl
+++ b/lib/snmp/src/agent/snmpa_error.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2002-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_error_io.erl b/lib/snmp/src/agent/snmpa_error_io.erl
index 54cdb6baac..e961d4b525 100644
--- a/lib/snmp/src/agent/snmpa_error_io.erl
+++ b/lib/snmp/src/agent/snmpa_error_io.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2002-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_error_logger.erl b/lib/snmp/src/agent/snmpa_error_logger.erl
index b1124fd728..d52a3e48ac 100644
--- a/lib/snmp/src/agent/snmpa_error_logger.erl
+++ b/lib/snmp/src/agent/snmpa_error_logger.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_error_report.erl b/lib/snmp/src/agent/snmpa_error_report.erl
index 35c02edcab..8f28eac653 100644
--- a/lib/snmp/src/agent/snmpa_error_report.erl
+++ b/lib/snmp/src/agent/snmpa_error_report.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_general_db.erl b/lib/snmp/src/agent/snmpa_general_db.erl
index a06604c9cf..431302b6cc 100644
--- a/lib/snmp/src/agent/snmpa_general_db.erl
+++ b/lib/snmp/src/agent/snmpa_general_db.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2000-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_internal.hrl b/lib/snmp/src/agent/snmpa_internal.hrl
index 6537562d44..fe3ba9f39e 100644
--- a/lib/snmp/src/agent/snmpa_internal.hrl
+++ b/lib/snmp/src/agent/snmpa_internal.hrl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2006-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_local_db.erl b/lib/snmp/src/agent/snmpa_local_db.erl
index 2c0cad807a..eb67b9cd6f 100644
--- a/lib/snmp/src/agent/snmpa_local_db.erl
+++ b/lib/snmp/src/agent/snmpa_local_db.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -191,6 +192,12 @@ dets_open(DbDir, DbInitError, Opts) ->
 		    end
 	    end;
 	_ ->
+	    case DbInitError of
+		create_db_and_dir ->
+		    ok = filelib:ensure_dir(Filename);
+		_ ->
+		    ok
+	    end,
 	    case do_dets_open(Name, Filename, Opts) of
 		{ok, Dets} ->
 		    ?vdebug("dets open done",[]),
@@ -583,7 +590,7 @@ handle_cast({variable_inc, Name, Db, N}, State) ->
 	    {value, Val} -> Val;
 	    _ -> 0 
 	end,
-    insert(Db, Name, M+N rem 4294967296, State),
+    insert(Db, Name, (M+N) rem 4294967296, State),
     {noreply, State};
     
 handle_cast({verbosity,Verbosity}, State) ->
@@ -1005,6 +1012,10 @@ table_construct_row(Name, RowIndex, Status, Cols) ->
 		defvals = Defs, status_col = StatusCol,
 		first_own_index = FirstOwnIndex, not_accessible = NoAccs} =
 	snmp_generic:table_info(Name),
+    ?vtrace(
+       "table_construct_row Indexes: ~p~n"
+       "    RowIndex: ~p",
+       [Indexes, RowIndex]),
     Keys = snmp_generic:split_index_to_keys(Indexes, RowIndex),
     OwnKeys = snmp_generic:get_own_indexes(FirstOwnIndex, Keys),
     Row = OwnKeys ++ snmp_generic:table_create_rest(length(OwnKeys) + 1,
diff --git a/lib/snmp/src/agent/snmpa_mib.erl b/lib/snmp/src/agent/snmpa_mib.erl
index 031309b990..ab1098514c 100644
--- a/lib/snmp/src/agent/snmpa_mib.erl
+++ b/lib/snmp/src/agent/snmpa_mib.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
@@ -26,7 +27,7 @@
 %% External exports
 -export([start_link/3, stop/1, 
 	 lookup/2, next/3, which_mib/2, which_mibs/1, whereis_mib/2, 
-	 load_mibs/2, unload_mibs/2, 
+	 load_mibs/3, unload_mibs/3, 
 	 register_subagent/3, unregister_subagent/2, info/1, info/2, 
 	 verbosity/2, dump/1, dump/2,
 	 backup/2,
@@ -39,6 +40,10 @@
 	 which_cache_size/1
 	]).
 
+%% <BACKWARD-COMPAT>
+-export([load_mibs/2, unload_mibs/2]).
+%% </BACKWARD-COMPAT>
+
 %% Internal exports
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2,
 	 code_change/3]).
@@ -182,19 +187,32 @@ next(MibServer, Oid, MibView) ->
 %%----------------------------------------------------------------------
 %% Purpose: Loads mibs into the mib process.
 %% Args: Mibs is a list of Filenames (compiled mibs).
+%%       Force is a boolean
 %% Returns: ok | {error, Reason}
 %%----------------------------------------------------------------------
+
+%% <BACKWARD-COMPAT>
 load_mibs(MibServer, Mibs) ->
-    call(MibServer, {load_mibs, Mibs}).
+    load_mibs(MibServer, Mibs, false).
+%% </BACKWARD-COMPAT>
+
+load_mibs(MibServer, Mibs, Force) ->
+    call(MibServer, {load_mibs, Mibs, Force}).
 
 
 %%----------------------------------------------------------------------
 %% Purpose: Loads mibs into the mib process.
 %% Args: Mibs is a list of Filenames (compiled mibs).
+%%       Force is a boolean
 %% Returns: ok | {error, Reason}
 %%----------------------------------------------------------------------
+%% <BACKWARD-COMPAT>
 unload_mibs(MibServer, Mibs) ->
-    call(MibServer, {unload_mibs, Mibs}).
+    unload_mibs(MibServer, Mibs, false).
+%% </BACKWARD-COMPAT>
+
+unload_mibs(MibServer, Mibs, Force) ->
+    call(MibServer, {unload_mibs, Mibs, Force}).
 
 
 %%----------------------------------------------------------------------
@@ -323,10 +341,6 @@ do_init(Prio, Mibs, Opts) ->
 %% Returns: {ok, NewMibData} | {'aborted at', Mib, NewData, Reason}
 %% Args: Operation is load_mib | unload_mib.
 %%----------------------------------------------------------------------
-mib_operations(Mod, Operation, Mibs, Data, MeOverride, TeOverride) ->
-    mib_operations(Mod, Operation, Mibs, Data, MeOverride, TeOverride, false). 
-
-
 mib_operations(_Mod, _Operation, [], Data, _MeOverride, _TeOverride, _Force) ->
     {ok, Data};
 mib_operations(Mod, Operation, [Mib|Mibs], Data0, MeOverride, TeOverride, Force) ->
@@ -451,18 +465,23 @@ handle_call({next, Oid, MibView}, _From,
     ?vdebug("next -> Reply: ~p", [Reply]), 
     {reply, Reply, NewState};
 
-handle_call({load_mibs, Mibs}, _From, 
+%% <BACKWARD-COMPAT>
+handle_call({load_mibs, Mibs}, From, State) ->
+    handle_call({load_mibs, Mibs, false}, From, State);
+%% </BACKWARD-COMPAT>
+
+handle_call({load_mibs, Mibs, Force}, _From, 
 	    #state{data         = Data, 
 		   teo          = TeOverride, 
 		   meo          = MeOverride,
 		   cache        = Cache, 
 		   data_mod     = Mod} = State) ->
-    ?vlog("load mibs ~p",[Mibs]),    
+    ?vlog("[~w] load mibs ~p", [Force, Mibs]),    
     %% Invalidate cache
     NewCache = maybe_invalidate_cache(Cache),
     {NData, Reply} = 
 	case (catch mib_operations(Mod, load_mib, Mibs, Data,
-				   MeOverride, TeOverride)) of
+				   MeOverride, TeOverride, Force)) of
 	    {'aborted at', Mib, NewData, Reason} ->
 		?vlog("aborted at ~p for reason ~p",[Mib,Reason]),    
 		{NewData, {error, {'load aborted at', Mib, Reason}}};
@@ -472,19 +491,24 @@ handle_call({load_mibs, Mibs}, _From,
     Mod:sync(NData),
     {reply, Reply, State#state{data = NData, cache = NewCache}};
 
-handle_call({unload_mibs, Mibs}, _From, 
+%% <BACKWARD-COMPAT>
+handle_call({unload_mibs, Mibs}, From, State) ->
+    handle_call({unload_mibs, Mibs, false}, From, State);
+%% </BACKWARD-COMPAT>
+
+handle_call({unload_mibs, Mibs, Force}, _From, 
 	    #state{data         = Data, 
 		   teo          = TeOverride, 
 		   meo          = MeOverride,
 		   cache        = Cache, 
 		   data_mod     = Mod} = State) ->
-    ?vlog("unload mibs ~p",[Mibs]),    
+    ?vlog("[~w] unload mibs ~p", [Force, Mibs]),    
     %% Invalidate cache
     NewCache = maybe_invalidate_cache(Cache),
     %% Unload mib(s)
     {NData, Reply} = 
 	case (catch mib_operations(Mod, unload_mib, Mibs, Data,
-				   MeOverride, TeOverride)) of
+				   MeOverride, TeOverride, Force)) of
 	    {'aborted at', Mib, NewData, Reason} ->
 		?vlog("aborted at ~p for reason ~p", [Mib,Reason]),    
 		{NewData, {error, {'unload aborted at', Mib, Reason}}};
diff --git a/lib/snmp/src/agent/snmpa_mib_data.erl b/lib/snmp/src/agent/snmpa_mib_data.erl
index 4d8a12b6c6..fcbc0465c8 100644
--- a/lib/snmp/src/agent/snmpa_mib_data.erl
+++ b/lib/snmp/src/agent/snmpa_mib_data.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_mib_data_ttln.erl b/lib/snmp/src/agent/snmpa_mib_data_ttln.erl
index d367e8f13f..959230b1dd 100644
--- a/lib/snmp/src/agent/snmpa_mib_data_ttln.erl
+++ b/lib/snmp/src/agent/snmpa_mib_data_ttln.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2013-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_mib_data_tttn.erl b/lib/snmp/src/agent/snmpa_mib_data_tttn.erl
index 90ddf4869f..9b4493a03f 100644
--- a/lib/snmp/src/agent/snmpa_mib_data_tttn.erl
+++ b/lib/snmp/src/agent/snmpa_mib_data_tttn.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_mib_lib.erl b/lib/snmp/src/agent/snmpa_mib_lib.erl
index 529a65a1f1..ecdf968458 100644
--- a/lib/snmp/src/agent/snmpa_mib_lib.erl
+++ b/lib/snmp/src/agent/snmpa_mib_lib.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_mib_storage.erl b/lib/snmp/src/agent/snmpa_mib_storage.erl
index 5c3f76d89b..ed0607fb84 100644
--- a/lib/snmp/src/agent/snmpa_mib_storage.erl
+++ b/lib/snmp/src/agent/snmpa_mib_storage.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_mib_storage_dets.erl b/lib/snmp/src/agent/snmpa_mib_storage_dets.erl
index e84e18e7ea..2459b6bc3e 100644
--- a/lib/snmp/src/agent/snmpa_mib_storage_dets.erl
+++ b/lib/snmp/src/agent/snmpa_mib_storage_dets.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_mib_storage_ets.erl b/lib/snmp/src/agent/snmpa_mib_storage_ets.erl
index 04faf46864..68dfa83247 100644
--- a/lib/snmp/src/agent/snmpa_mib_storage_ets.erl
+++ b/lib/snmp/src/agent/snmpa_mib_storage_ets.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_mib_storage_mnesia.erl b/lib/snmp/src/agent/snmpa_mib_storage_mnesia.erl
index 192b5aa26e..5f66b2ed9f 100644
--- a/lib/snmp/src/agent/snmpa_mib_storage_mnesia.erl
+++ b/lib/snmp/src/agent/snmpa_mib_storage_mnesia.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2013-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2013-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_misc_sup.erl b/lib/snmp/src/agent/snmpa_misc_sup.erl
index 488d3f7921..746405ec1d 100644
--- a/lib/snmp/src/agent/snmpa_misc_sup.erl
+++ b/lib/snmp/src/agent/snmpa_misc_sup.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_mpd.erl b/lib/snmp/src/agent/snmpa_mpd.erl
index 2d37ea56f0..b440d57d03 100644
--- a/lib/snmp/src/agent/snmpa_mpd.erl
+++ b/lib/snmp/src/agent/snmpa_mpd.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2015. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
@@ -20,7 +21,7 @@
 
 -export([init/1, reset/0, inc/1, counters/0, 
 	 discarded_pdu/1,
-	 process_packet/6, process_packet/7, 
+	 process_packet/5, process_packet/6, process_packet/7,
 	 generate_response_msg/5, generate_response_msg/6, 
 	 generate_msg/5, generate_msg/6, 
 	 generate_discovery_msg/4, 
@@ -75,8 +76,9 @@
 init(Vsns) ->
     ?vlog("init -> entry with"
 	"~n   Vsns: ~p", [Vsns]),
-    {A,B,C} = erlang:now(),
-    random:seed(A,B,C),
+    random:seed(erlang:phash2([node()]),
+                erlang:monotonic_time(),
+                erlang:unique_integer()),
     ets:insert(snmp_agent_table, {msg_id, random:uniform(2147483647)}),
     ets:insert(snmp_agent_table, {req_id, random:uniform(2147483647)}),
     init_counters(),
@@ -113,22 +115,30 @@ reset() ->
 %    length(snmp_pdus:enc_message(M)) + 4.
 
 %%-----------------------------------------------------------------
-%% Func: process_packet(Packet, TDomain, TAddress, State, Log) ->
+%% Func: process_packet(Packet, Domain, Address, State, Log) ->
 %%       {ok, SnmpVsn, Pdu, PduMS, ACMData} | {discarded, Reason}
 %% Types: Packet = binary()
-%%        TDomain = snmpUDPDomain | transportDomain()
-%%        TAddress = {Ip, Udp} (*but* depends on TDomain)
+%%        Domain = snmpUDPDomain | transportDomain()
+%%        Address = {Ip, Udp} (*but* depends on Domain)
 %%        State = #state
 %% Purpose: This is the main Message Dispatching function. (see
 %%          section 4.2.1 in rfc2272)
 %%-----------------------------------------------------------------
-process_packet(Packet, TDomain, TAddress, State, NoteStore, Log) ->
+process_packet(Packet, From, State, NoteStore, Log) ->
     LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
-    process_packet(Packet, TDomain, TAddress, LocalEngineID, 
-		   State, NoteStore, Log).
-
-process_packet(Packet, TDomain, TAddress, LocalEngineID, 
-	       State, NoteStore, Log) ->
+    process_packet(Packet, From, LocalEngineID, State, NoteStore, Log).
+
+process_packet(
+  Packet, Domain, Address, LocalEngineID, State, NoteStore, Log) ->
+    From = {Domain, Address},
+    process_packet(Packet, From, LocalEngineID, State, NoteStore, Log).
+
+process_packet(Packet, Domain, Address, State, NoteStore, Log)
+  when is_atom(Domain) ->
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID,
+    From = {Domain, Address},
+    process_packet(Packet, From, LocalEngineID, State, NoteStore, Log);
+process_packet(Packet, From, LocalEngineID, State, NoteStore, Log) ->
     inc(snmpInPkts),
     case catch snmp_pdus:dec_message_only(binary_to_list(Packet)) of
 
@@ -136,17 +146,17 @@ process_packet(Packet, TDomain, TAddress, LocalEngineID,
 	  when State#state.v1 =:= true ->
 	    ?vlog("v1, community: ~s", [Community]),
 	    HS = ?empty_msg_size + length(Community),
-	    v1_v2c_proc('version-1', NoteStore, Community, 
-			TDomain, TAddress, 
-			LocalEngineID, Data, HS, Log, Packet);
+	    v1_v2c_proc(
+	      'version-1', NoteStore, Community, From,
+	      LocalEngineID, Data, HS, Log, Packet);
 
 	#message{version = 'version-2', vsn_hdr = Community, data = Data}
 	  when State#state.v2c =:= true ->
 	    ?vlog("v2c, community: ~s", [Community]),
 	    HS = ?empty_msg_size + length(Community),
-	    v1_v2c_proc('version-2', NoteStore, Community, 
-			TDomain, TAddress, 
-			LocalEngineID, Data, HS, Log, Packet);
+	    v1_v2c_proc(
+	      'version-2', NoteStore, Community, From,
+	      LocalEngineID, Data, HS, Log, Packet);
 
 	#message{version = 'version-3', vsn_hdr = V3Hdr, data = Data}
 	  when State#state.v3 =:= true ->
@@ -154,9 +164,9 @@ process_packet(Packet, TDomain, TAddress, LocalEngineID,
 		  [V3Hdr#v3_hdr.msgID,
 		   V3Hdr#v3_hdr.msgFlags,
 		   V3Hdr#v3_hdr.msgSecurityModel]),
-	    v3_proc(NoteStore, Packet, 
-		    TDomain, TAddress, 
-		    LocalEngineID, V3Hdr, Data, Log);
+	    v3_proc(
+	      NoteStore, Packet, From,
+	      LocalEngineID, V3Hdr, Data, Log);
 
 	{'EXIT', {bad_version, Vsn}} ->
 	    ?vtrace("exit: bad version: ~p",[Vsn]),
@@ -183,11 +193,32 @@ discarded_pdu(Variable) -> inc(Variable).
 %%-----------------------------------------------------------------
 %% Handles a Community based message (v1 or v2c).
 %%-----------------------------------------------------------------
-v1_v2c_proc(Vsn, NoteStore, Community, Domain, 
-	    {Ip, Udp}, LocalEngineID, 
-	    Data, HS, Log, Packet) ->
-    TDomain  = snmp_conf:mk_tdomain(Domain), 
-    TAddress = snmp_conf:mk_taddress(Domain, Ip, Udp),
+v1_v2c_proc(
+  Vsn, NoteStore, Community, From,
+  LocalEngineID, Data, HS, Log, Packet) ->
+    try
+	case From of
+	    {D, A} when is_atom(D) ->
+		{snmp_conf:mk_tdomain(D),
+		 snmp_conf:mk_taddress(D, A)};
+	    {_, P} = A when is_integer(P) ->
+		{snmp_conf:mk_tdomain(),
+		 snmp_conf:mk_taddress(A)}
+	end
+    of
+	{TDomain, TAddress} ->
+	    v1_v2c_proc_dec(
+	      Vsn, NoteStore, Community, TDomain, TAddress,
+	      LocalEngineID, Data, HS, Log, Packet)
+    catch
+	_ ->
+	    {discarded, {badarg, From}}
+    end.
+
+
+v1_v2c_proc_dec(
+  Vsn, NoteStore, Community, TDomain, TAddress,
+  LocalEngineID, Data, HS, Log, Packet) ->
     AgentMS  = get_engine_max_message_size(LocalEngineID),
     MgrMS    = snmp_community_mib:get_target_addr_ext_mms(TDomain, TAddress),
     PduMS    = case MgrMS of
@@ -214,7 +245,7 @@ v1_v2c_proc(Vsn, NoteStore, Community, Domain,
 	    case Pdu#pdu.type of
 		'set-request' ->
 		    %% Check if this message has already been processed
-		    Key = {agent, Ip, ReqId},
+		    Key = {agent, {TDomain, TAddress}, ReqId},
 		    case snmp_note_store:get_note(NoteStore, Key) of
 			undefined -> 
 			    %% Set the processed note _after_ pdu processing. 
@@ -236,13 +267,7 @@ v1_v2c_proc(Vsn, NoteStore, Community, Domain,
 	    {discarded, Reason};
 	_TrapPdu ->
 	    {discarded, trap_pdu}
-    end;
-v1_v2c_proc(_Vsn, _NoteStore, _Community, snmpUDPDomain, TAddress, 
-	    _LocalEngineID, _Data, _HS, _Log, _Packet) ->
-    {discarded, {badarg, TAddress}};
-v1_v2c_proc(_Vsn, _NoteStore, _Community, TDomain, _TAddress, 
-	    _LocalEngineID, _Data, _HS, _Log, _Packet) ->
-    {discarded, {badarg, TDomain}}.
+    end.
 
 sec_model('version-1') -> ?SEC_V1;
 sec_model('version-2') -> ?SEC_V2C.
@@ -252,8 +277,7 @@ sec_model('version-2') -> ?SEC_V2C.
 %% Handles a SNMPv3 Message, following the procedures in rfc2272,
 %% section 4.2 and 7.2
 %%-----------------------------------------------------------------
-v3_proc(NoteStore, Packet, _TDomain, _TAddress, LocalEngineID, 
-	V3Hdr, Data, Log) ->
+v3_proc(NoteStore, Packet, _From, LocalEngineID, V3Hdr, Data, Log) ->
     case (catch v3_proc(NoteStore, Packet, LocalEngineID, V3Hdr, Data, Log)) of
 	{'EXIT', Reason} ->
 	    exit(Reason);
@@ -657,7 +681,7 @@ generate_response_msg(Vsn, RePdu, Type,
 		    ?SEC_USM ->
 			snmpa_usm
 		end,
-	    SecEngineID = LocalEngineID, 
+	    SecEngineID = LocalEngineID, % 3.1.1a
 	    ?vtrace("generate_response_msg -> SecEngineID: ~w", [SecEngineID]),
 	    case (catch SecModule:generate_outgoing_msg(Message, 
 							SecEngineID,
@@ -749,21 +773,7 @@ generate_v3_report_msg(MsgID, MsgSecurityModel, Data, LocalEngineID,
 			   ContextEngineID, ContextName, SecData}, 
 			  LocalEngineID, Log).
 
-%% req_id(#scopedPdu{data = #pdu{request_id = ReqId}}) ->
-%%     ?vtrace("Report ReqId: ~p",[ReqId]),
-%%     ReqId;
-%% req_id(_) ->
-%%     0. % RFC2572, 7.1.3.c.4
 
-    
-%% maybe_generate_discovery1_report_msg() ->
-%%     case (catch DiscoveryHandler:handle_discovery1(Ip, Udp, EngineId)) of
-%% 	{ok, Entry} when is_record(Entry, snmp_discovery_data1) ->
-%% 	    ok;
-%% 	ignore ->
-%% 	    ok;
-%% 	{error, Reason} ->
-	    
 %% Response to stage 1 discovery message (terminating, i.e. from the manager)
 generate_discovery1_report_msg(MsgID, MsgSecurityModel, 
 			       SecName, SecLevel, 
@@ -999,7 +1009,7 @@ generate_discovery_msg(NoteStore, {TDomain, TAddress},
 		       InitialUserName, 
 		       ContextName, Timeout) ->
 
-    {ok, {_Domain, Address}} = transform_taddr(TDomain, TAddress),
+    {ok, {Domain, Address}} = transform_taddr(TDomain, TAddress),
 
     %% 7.1.7
     ?vdebug("generate_discovery_msg -> 7.1.7 (~w)", [ManagerEngineID]),
@@ -1041,7 +1051,7 @@ generate_discovery_msg(NoteStore, {TDomain, TAddress},
 	    %% Log(Packet),
 	    inc_snmp_out_vars(Pdu),
 	    ?vdebug("generate_discovery_msg -> done", []),
-	    {Packet, Address};
+	    {Domain, Address, Packet};
 
 	Error ->
 	    throw(Error)
@@ -1081,8 +1091,22 @@ transform_taddr(?transportDomainUdpIpv4, [A, B, C, D, P1, P2]) ->
     {ok, {Domain, Address}};
 transform_taddr(?transportDomainUdpIpv4, BadAddr) ->
     {error, {bad_transportDomainUdpIpv4_address, BadAddr}};
-transform_taddr(?transportDomainUdpIpv6, 
-		[A1, A2, A3, A4, A5, A6, A7, A8, P1, P2]) ->
+transform_taddr(
+  ?transportDomainUdpIpv6,
+  [A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16,
+   P1, P2]) ->
+    Domain = transportDomainUdpIpv6,
+    Addr =
+	{(A1 bsl 8) bor A2, (A3 bsl 8) bor A4,
+	 (A5 bsl 8) bor A6, (A7 bsl 8) bor A8,
+	 (A9 bsl 8) bor A10, (A11 bsl 8) bor A12,
+	 (A13 bsl 8) bor A14, (A15 bsl 8) bor A16},
+    Port = P1 bsl 8 + P2,
+    Address = {Addr, Port},
+    {ok, {Domain, Address}};
+transform_taddr(
+  ?transportDomainUdpIpv6,
+  [A1, A2, A3, A4, A5, A6, A7, A8, P1, P2]) ->
     Domain  = transportDomainUdpIpv6, 
     Addr    = {A1, A2, A3, A4, A5, A6, A7, A8},
     Port    = P1 bsl 8 + P2,
@@ -1171,6 +1195,9 @@ mk_v1_v2_packet_list([{Domain, Addr} | T],
     %% Sending from default UDP port
     inc_snmp_out_vars(Pdu),
     Entry = {Domain, Addr, Packet},
+    %% It would be cleaner to return {To, Packet} to not
+    %% break the abstraction for an address on the
+    %% {Domain, Address} format.
     mk_v1_v2_packet_list(T, Packet, Len, Pdu, [Entry | Acc]).
 
 
@@ -1277,6 +1304,9 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
 			     req_id        = Pdu#pdu.request_id},
 	    snmp_note_store:set_note(NoteStore, 1500, CacheKey, CacheVal),
 	    inc_snmp_out_vars(Pdu),
+	    %% It would be cleaner to return {To, Packet} to not
+	    %% break the abstraction for an address on the
+	    %% {Domain, Address} format.
 	    {ok, {Domain, Addr, Data}}
     end.
 
diff --git a/lib/snmp/src/agent/snmpa_net_if.erl b/lib/snmp/src/agent/snmpa_net_if.erl
index 79c85a6e4e..ecf9498ca9 100644
--- a/lib/snmp/src/agent/snmpa_net_if.erl
+++ b/lib/snmp/src/agent/snmpa_net_if.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2015. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -35,18 +36,27 @@
 -include("snmp_debug.hrl").
 -include("snmp_verbosity.hrl").
 
--record(state, {parent, 
-		note_store,
-		master_agent, 
-		usock, 
-		usock_opts, 
-		mpd_state, 
-		log,
-		reqs  = [], 
-		debug = false,
-		limit = infinity,
-		rcnt  = [],
-		filter}).
+-record(state,
+	{parent,
+	 note_store,
+	 master_agent,
+	 transports = [],
+%%	 usock,
+%%	 usock_opts,
+	 mpd_state,
+	 log,
+	 reqs  = [],
+	 debug = false,
+	 limit = infinity,
+%%	 rcnt  = [],
+	 filter}).
+%%	 domain = snmpUDPDomain}).
+
+-record(transport,
+	{socket,
+	 domain = snmpUDPDomain,
+	 opts = [],
+	 req_refs = []}).
 
 -ifndef(default_verbosity).
 -define(default_verbosity,silence).
@@ -104,13 +114,9 @@ get_request_limit(Pid) ->
 set_request_limit(Pid, NewLimit) ->
     call(Pid, {set_request_limit, NewLimit}).
 
-get_port() ->
-    {value, UDPPort} = snmp_framework_mib:intAgentUDPPort(get),
-    UDPPort.
-
-get_address() ->
-    {value, IPAddress} = snmp_framework_mib:intAgentIpAddress(get),
-    IPAddress.
+get_transports() ->
+    {value, Transports} = snmp_framework_mib:intAgentTransports(get),
+    Transports.
 
 filter_reset(Pid) ->
     Pid ! filter_reset.
@@ -129,7 +135,22 @@ init(Prio, NoteStore, MasterAgent, Parent, Opts) ->
     case (catch do_init(Prio, NoteStore, MasterAgent, Parent, Opts)) of
 	{ok, State} ->
 	    proc_lib:init_ack({ok, self()}),
-	    loop(State);
+	    try loop(State)
+	    catch
+		C:E when C =/= exit, E =/= shutdown ->
+		    Fmt =
+			"loop/1 EXCEPTION ~w:~w~n"
+			"   ~p",
+		    S = erlang:get_stacktrace(),
+		    case C of
+			exit ->
+			    %% Externally killed, root cause is elsewhere
+			    info_msg(Fmt, [C, E, S]);
+			_ ->
+			    error_msg(Fmt, [C, E, S])
+		    end,
+		    erlang:raise(C, E, S)
+	    end;
 	{error, Reason} ->
 	    config_err("failed starting net-if: ~n~p", [Reason]),
 	    proc_lib:init_ack({error, Reason});
@@ -147,12 +168,6 @@ do_init(Prio, NoteStore, MasterAgent, Parent, Opts) ->
     put(verbosity,get_verbosity(Opts)),
     ?vlog("starting",[]),
 
-    %% -- Port and address --
-    UDPPort = get_port(),
-    ?vdebug("port: ~w",[UDPPort]),
-    IPAddress = get_address(),
-    ?vdebug("addr: ~w",[IPAddress]),
-
     %% -- Versions --
     Vsns = get_vsns(Opts),
     ?vdebug("vsns: ~w",[Vsns]),
@@ -162,39 +177,45 @@ do_init(Prio, NoteStore, MasterAgent, Parent, Opts) ->
     ?vdebug("Limit: ~w", [Limit]),
     FilterOpts = get_filter_opts(Opts),
     FilterMod  = create_filter(FilterOpts),
-    ?vdebug("FilterMod: ~w", [FilterMod]),
+    ?vdebug("FilterMod: ~w FilterOpts: ~p", [FilterMod,FilterOpts]),
 
     %% -- Audit trail log
     Log = create_log(),
     ?vdebug("Log: ~w",[Log]),
 
-
-    %% -- Socket --
-    IPOpts1 = ip_opt_bind_to_ip_address(Opts, IPAddress),
-    IPOpts2 = ip_opt_no_reuse_address(Opts),
-    IPOpts3 = ip_opt_recbuf(Opts),
-    IPOpts4 = ip_opt_sndbuf(Opts),
-    IPOpts  = [binary | IPOpts1 ++ IPOpts2 ++ IPOpts3 ++ IPOpts4], 
-    ?vdebug("open socket with options: ~w",[IPOpts]),
-    case gen_udp_open(UDPPort, IPOpts) of
-	{ok, Sock} ->
+    DomainAddresses = get_transports(),
+    ?vdebug("DomainAddresses: ~w",[DomainAddresses]),
+    try
+	[begin
+	     SocketOpts = socket_opts(Domain, Address, Opts),
+	     Socket = socket_open(Domain, SocketOpts),
+	     active_once(Socket),
+	     #transport{
+		      socket = Socket,
+		      domain = Domain,
+		      opts   = SocketOpts}
+	 end || {Domain, Address} <- DomainAddresses]
+    of
+	[] ->
+	    ?vinfo("No transports configured: ~p", [DomainAddresses]),
+	    {error, {no_transports,DomainAddresses}};
+	Transports ->
 	    MpdState = snmpa_mpd:init(Vsns),
-	    init_counters(), 
-	    active_once(Sock),
+	    init_counters(),
 	    S = #state{parent       = Parent,
 		       note_store   = NoteStore,
 		       master_agent = MasterAgent, 
 		       mpd_state    = MpdState,
-		       usock        = Sock, 
-		       usock_opts   = IPOpts,
+		       transports   = Transports,
 		       log          = Log,
 		       limit        = Limit,
 		       filter       = FilterMod},
 	    ?vdebug("started with MpdState: ~p", [MpdState]),
-	    {ok, S};
-	{error, Reason} ->
-	    ?vinfo("Failed to open UDP socket: ~p", [Reason]),
-	    {error, {udp_open, UDPPort, Reason}}
+	    {ok, S}
+    catch
+	Error ->
+	    ?vinfo("Failed to initialize socket(s): ~p", [Error]),
+	    {error, Error}
     end.
 
 
@@ -250,48 +271,84 @@ create_filter(BadOpts) ->
     throw({error, {bad_filter_opts, BadOpts}}).
 
 
-log({_, []}, _, _, _, _) ->
+log({_, []}, _, _, _) ->
     ok;
-log({Log, Types}, 'set-request', Packet, Addr, Port) ->
+log({Log, Types}, 'set-request', Packet, Address) ->
     case lists:member(write, Types) of
 	true ->
-	    snmp_log:log(Log, Packet, Addr, Port);
+	    snmp_log:log(Log, Packet, format_address(Address));
 	false ->
 	    ok
     end;
-log({Log, Types}, _, Packet, Addr, Port) ->
+log({Log, Types}, _, Packet, Address) ->
      case lists:member(read, Types) of
 	true ->
-	    snmp_log:log(Log, Packet, Addr, Port);
+	    snmp_log:log(Log, Packet, format_address(Address));
 	false ->
 	    ok
-    end;
-log(_, _, _, _, _) ->
-    ok.
-   
-    
-gen_udp_open(Port, Opts) ->
+    end.
+
+format_address(Address) ->
+    iolist_to_binary(snmp_conf:mk_addr_string(Address)).
+
+
+socket_open(snmpUDPDomain = Domain, [IpPort | Opts]) ->
     case init:get_argument(snmp_fd) of
 	{ok, [[FdStr]]} ->
 	    Fd = list_to_integer(FdStr),
-	    gen_udp:open(0, [{fd, Fd}|Opts]);
+	    ?vdebug("socket_open(~p, [~p | ~p]) Fd: ~p",
+		    [Domain, IpPort, Opts, Fd]),
+	    gen_udp_open(0, [{fd, Fd} | Opts]);
 	error ->
 	    case init:get_argument(snmpa_fd) of
 		{ok, [[FdStr]]} ->
 		    Fd = list_to_integer(FdStr),
-		    gen_udp:open(0, [{fd, Fd}|Opts]);
+		    ?vdebug("socket_open(~p, [~p | ~p]) Fd: ~p",
+			    [Domain, IpPort, Opts, Fd]),
+		    gen_udp_open(0, [{fd, Fd} | Opts]);
 		error ->
-		    gen_udp:open(Port, Opts)
+		    ?vdebug("socket_open(~p, [~p | ~p])",
+			    [Domain, IpPort, Opts]),
+		    gen_udp_open(IpPort, Opts)
 	    end
+    end;
+socket_open(Domain, [IpPort | Opts])
+  when Domain =:= transportDomainUdpIpv4;
+       Domain =:= transportDomainUdpIpv6 ->
+    ?vdebug("socket_open(~p, [~p | ~p])", [Domain, IpPort, Opts]),
+    gen_udp_open(IpPort, Opts);
+socket_open(Domain, Opts) ->
+    throw({socket_open, Domain, Opts}).
+
+gen_udp_open(IpPort, Opts) ->
+    case gen_udp:open(IpPort, Opts) of
+	{ok, Socket} ->
+	    Socket;
+	{error, Reason} ->
+	    throw({udp_open, IpPort, Reason})
     end.
 
 
-loop(S) ->
+
+loop(#state{transports = Transports, limit = Limit, parent = Parent} = S) ->
+    ?vdebug("loop(~p)", [S]),
     receive
-	{udp, _UdpId, Ip, Port, Packet} ->
-	    ?vlog("got paket from ~w:~w",[Ip,Port]),
-	    NewS = maybe_handle_recv(S, Ip, Port, Packet),
-	    loop(NewS);
+	{udp, Socket, IpAddr, IpPort, Packet} = Msg when is_port(Socket) ->
+	    ?vlog("got paket from ~w:~w on ~w", [IpAddr, IpPort, Socket]),
+	    case lists:keyfind(Socket, #transport.socket, Transports) of
+		#transport{socket = Socket, domain = Domain} = Transport ->
+		    From =
+			case Domain of
+			    snmpUDPDomain ->
+				{IpAddr, IpPort};
+			    _ ->
+				{Domain, {IpAddr, IpPort}}
+			end,
+		    loop(maybe_handle_recv(S, Transport, From, Packet));
+		false ->
+		    error_msg("Packet on unknown port: ~p", [Msg]),
+		    loop(S)
+	    end;
 
 	{info, ReplyRef, Pid} ->
 	    Info = get_info(S),
@@ -299,47 +356,78 @@ loop(S) ->
 	    loop(S);
 
 	%% response (to get/get_next/get_bulk/set requests)
-	{snmp_response, Vsn, RePdu, Type, ACMData, Dest, []} ->
+	{snmp_response, Vsn, RePdu, Type, ACMData, To, Extra} ->
 	    ?vlog("reply pdu: "
 		  "~n   ~s", 
 		  [?vapply(snmp_misc, format, [256, "~w", [RePdu]])]),
-	    NewS = maybe_handle_reply_pdu(S, Vsn, RePdu, Type, ACMData, Dest),
-	    loop(NewS);
+	    {_, ReqRef} = lists:keyfind(request_ref, 1, Extra),
+	    case
+		case
+		    (Limit =/= infinity) andalso
+		    select_transport_from_req_ref(ReqRef, Transports)
+		of
+		    false ->
+			select_transport_from_domain(
+			  address_to_domain(To),
+			  Transports);
+		    T ->
+			T
+		end
+	    of
+		false ->
+		    error_msg(
+		      "Can not find transport for response PDU to: ~s",
+		      [format_address(To)]),
+		    loop(S);
+		Transport ->
+		    NewS = update_req_counter_outgoing(S, Transport, ReqRef),
+		    maybe_handle_reply_pdu(
+		      NewS, Transport, Vsn, RePdu, Type, ACMData, To),
+		    loop(NewS)
+	    end;
 
 	%% Traps/notification
-	{send_pdu, Vsn, Pdu, MsgData, To} ->
-	    ?vdebug("send pdu: "
-		    "~n   Pdu: ~p"
-		    "~n   To:  ~p", [Pdu, To]),
-	    NewS = maybe_handle_send_pdu(S, Vsn, Pdu, MsgData, To, undefined),
+	{send_pdu, Vsn, Pdu, MsgData, TDomAddrs} ->
+	    ?vdebug("send pdu:~n"
+		    "   Pdu:       ~p~n"
+		    "   TDomAddrs: ~p", [Pdu, TDomAddrs]),
+	    NewS =
+		maybe_handle_send_pdu(
+		  S, Vsn, Pdu, MsgData, TDomAddrs, undefined),
 	    loop(NewS);
 
 	%% We dont use the extra-info at this time, ...
-	{send_pdu, Vsn, Pdu, MsgData, To, _ExtraInfo} ->
-	    ?vdebug("send pdu: "
-		    "~n   Pdu: ~p"
-		    "~n   To:  ~p", [Pdu, To]),
-	    NewS = maybe_handle_send_pdu(S, Vsn, Pdu, MsgData, To, undefined),
+	{send_pdu, Vsn, Pdu, MsgData, TDomAddrs, _ExtraInfo} ->
+	    ?vdebug("send pdu:~n"
+		    "   Pdu:        ~p~n"
+		    "   TDomAddrs: ~p", [Pdu, TDomAddrs]),
+	    NewS =
+		maybe_handle_send_pdu(
+		  S, Vsn, Pdu, MsgData, TDomAddrs, undefined),
 	    loop(NewS);
 
 	%% Informs
-	{send_pdu_req, Vsn, Pdu, MsgData, To, From} ->
-	    ?vdebug("send pdu request: "
-		    "~n   Pdu:     ~p"
-		    "~n   To:      ~p"
-		    "~n   From:    ~p", 
-		    [Pdu, To, toname(From)]),
-	    NewS = maybe_handle_send_pdu(S, Vsn, Pdu, MsgData, To, From),
+	{send_pdu_req, Vsn, Pdu, MsgData, TDomAddrs, From} ->
+	    ?vdebug("send pdu request:~n"
+		    "   Pdu:       ~p~n"
+		    "   TDomAddrs: ~p~n"
+		    "   From:      ~p",
+		    [Pdu, TDomAddrs, toname(From)]),
+	    NewS =
+		maybe_handle_send_pdu(
+		  S, Vsn, Pdu, MsgData, TDomAddrs, From),
 	    loop(NewS);
 
 	%% We dont use the extra-info at this time, ...
-	{send_pdu_req, Vsn, Pdu, MsgData, To, From, _ExtraInfo} ->
-	    ?vdebug("send pdu request: "
-		    "~n   Pdu:     ~p"
-		    "~n   To:      ~p"
-		    "~n   From:    ~p", 
-		    [Pdu, To, toname(From)]),
-	    NewS = maybe_handle_send_pdu(S, Vsn, Pdu, MsgData, To, From),
+	{send_pdu_req, Vsn, Pdu, MsgData, TDomAddrs, From, _ExtraInfo} ->
+	    ?vdebug("send pdu request:~n"
+		    "   Pdu:       ~p~n"
+		    "   TDomAddrs: ~p~n"
+		    "   From:      ~p",
+		    [Pdu, TDomAddrs, toname(From)]),
+	    NewS =
+		maybe_handle_send_pdu(
+		  S, Vsn, Pdu, MsgData, TDomAddrs, From),
 	    loop(NewS);
 
 	%% Discovery Inform
@@ -365,15 +453,34 @@ loop(S) ->
 	    NewS = handle_send_discovery(S, Pdu, MsgData, To, From),
 	    loop(NewS);
 
-	{discarded_pdu, _Vsn, ReqId, _ACMData, Variable, _Extra} ->
-	    ?vdebug("discard PDU: ~p", [Variable]),
+	{discarded_pdu, _Vsn, ReqId, _ACMData, Variable, Extra} ->
+	    ?vdebug("discard PDU: ~p - ~p - ~p",
+		    [Variable, Extra, Transports]),
 	    snmpa_mpd:discarded_pdu(Variable),
-	    NewS = update_req_counter_outgoing(S, ReqId),
-	    loop(NewS);
+	    {_, ReqRef} = lists:keyfind(request_ref, 1, Extra),
+	    if
+		Limit =:= infinity ->
+		    %% The incoming PDU was not registered
+		    loop(update_req_counter_outgoing(S, false, ReqRef));
+		true ->
+		    case
+			select_transport_from_req_ref(ReqRef, Transports)
+		    of
+			false ->
+			    error_msg(
+			      "Can not find transport for discarded PDU: ~p",
+			      [ReqId]),
+			    loop(S);
+			Transport ->
+			    loop(
+			      update_req_counter_outgoing(
+				S, Transport, ReqRef))
+		    end
+	    end;
 
 	{get_log_type, ReplyRef, Pid} ->
 	    ?vdebug("get log type: ~p", []),
-	    #state{log = {_, LogType}} = S,
+	    {_, LogType} = S#state.log,
 	    Pid ! {ReplyRef, {ok, LogType}, self()},
 	    loop(S);
 
@@ -385,7 +492,6 @@ loop(S) ->
 
 	{get_request_limit, ReplyRef, Pid} ->
 	    ?vdebug("get request limit: ~p", []),
-	    #state{limit = Limit} = S,
 	    Pid ! {ReplyRef, {ok, Limit}, self()},
 	    loop(S);
 
@@ -409,36 +515,50 @@ loop(S) ->
 	    reset_counters(),
 	    loop(S);
 
-	{'EXIT', Parent, Reason} when Parent == S#state.parent ->
+	{'EXIT', Parent, Reason} ->
 	    ?vlog("parent (~p) exited: "
 		  "~n   ~p", [Parent, Reason]),
 	    exit(Reason);
 
-	{'EXIT', Port, Reason} when Port == S#state.usock ->
-	    UDPPort = get_port(),
-	    NewS = 
-		case gen_udp_open(UDPPort, S#state.usock_opts) of
-		    {ok, Id} ->
-			error_msg("Port ~p exited for reason"
-				  "~n   ~p"
-				  "~n   Re-opened (~p)", [Port, Reason, Id]),
-			S#state{usock = Id};
-		    {error, ReopenReason} ->
-			error_msg("Port ~p exited for reason"
-				  "~n   ~p"
-				  "~n   Re-open failed with reason"
-				  "~n   ~p", 
-				  [Port, Reason, ReopenReason]),
-			ok
-		end,
-	    loop(NewS);
-
-	{'EXIT', Port, Reason} when is_port(Port) ->
-	    error_msg("Exit message from port ~p for reason ~p~n", 
-		      [Port, Reason]),
-	    loop(S);
-
-	{'EXIT', Pid, Reason} ->
+	{'EXIT', Socket, Reason} when is_port(Socket) ->
+	    case lists:keyfind(Socket, #transport.socket, Transports) of
+		#transport{
+		  socket   = Socket,
+		  domain   = Domain,
+		  opts     = SocketOpts,
+		  req_refs = ReqRefs} = Transport ->
+		    try socket_open(Domain, SocketOpts) of
+			NewSocket ->
+			    error_msg(
+			      "Socket ~p exited for reason"
+			      "~n     ~p"
+			      "~n     Re-opened (~p)",
+			      [Socket, Reason, NewSocket]),
+			    (length(ReqRefs) < Limit) andalso
+				active_once(NewSocket),
+			    S#state{
+			      transports =
+				  lists:keyreplace(
+				    Socket, #transport.socket, Transports,
+				    Transport#transport{socket = NewSocket})}
+		    catch
+			ReopenReason ->
+			    error_msg(
+			      "Socket ~p exited for reason"
+			      "~n     ~p"
+			      "~n     Re-open failed with reason"
+			      "~n     ~p",
+			      [Socket, Reason, ReopenReason]),
+			    exit(ReopenReason)
+		    end;
+		false ->
+		    error_msg(
+		      "Exit message from port ~p for reason ~p~n",
+		      [Socket, Reason]),
+		    loop(S)
+	    end;
+
+	{'EXIT', Pid, Reason} when is_pid(Pid) ->
 	    ?vlog("~p exited: "
 		  "~n   ~p", [Pid, Reason]),
 	    NewS = clear_reqs(Pid, S),
@@ -446,205 +566,321 @@ loop(S) ->
 
 	{system, From, Msg} ->
 	    ?vdebug("system event ~p from ~p", [Msg, From]),
-	    sys:handle_system_msg(Msg, From, S#state.parent, ?MODULE, [], S);
+	    sys:handle_system_msg(Msg, From, Parent, ?MODULE, [], S);
 
 	_ ->
 	    loop(S)
     end.
 
 
-update_req_counter_incomming(#state{limit = infinity, usock = Sock} = S, _) ->
-    active_once(Sock), %% No limit so activate directly
+update_req_counter_incoming(
+  #state{limit = infinity} = S,
+  #transport{socket = Socket},
+  _ReqRef) ->
+    active_once(Socket), %% No limit so activate directly
     S; 
-update_req_counter_incomming(#state{limit = Limit, 
-				    rcnt  = RCnt, 
-				    usock = Sock} = S, Rid) 
-  when length(RCnt) + 1 == Limit ->
+update_req_counter_incoming(
+  #state{limit = Limit} = S,
+  #transport{socket = Socket, req_refs = ReqRefs} = T,
+  ReqRef) when length(ReqRefs) + 1 >= Limit ->
     %% Ok, one more and we are at the limit.
     %% Just make sure we are not already processing this one...
-    case lists:member(Rid, RCnt) of
+    case lists:member(ReqRef, ReqRefs) of
 	false ->
 	    %% We are at the limit, do _not_ activate socket
-	    S#state{rcnt = [Rid|RCnt]};
+	    update_transport_req_refs(S, T, [ReqRef | ReqRefs]);
 	true ->
-	    active_once(Sock),
+	    active_once(Socket),
 	    S
     end;
-update_req_counter_incomming(#state{rcnt  = RCnt, 
-				    usock = Sock} = S, Rid) ->
-    active_once(Sock),
-    case lists:member(Rid, RCnt) of
+update_req_counter_incoming(
+  #state{} = S,
+  #transport{socket = Socket, req_refs = ReqRefs} = T,
+  ReqRef) ->
+    active_once(Socket),
+    case lists:member(ReqRef, ReqRefs) of
 	false ->
-	    S#state{rcnt = [Rid|RCnt]};
+	    update_transport_req_refs(S, T, [ReqRef | ReqRefs]);
 	true ->
 	    S
     end.
 
-
-update_req_counter_outgoing(#state{limit = infinity} = S, _Rid) ->
+update_req_counter_outgoing(
+  #state{limit = infinity} = S,
+  _Transport, _ReqRef) ->
     %% Already activated (in the incoming function)
     S;
-update_req_counter_outgoing(#state{limit = Limit, 
-				   rcnt  = RCnt, 
-				   usock = Sock} = S, Rid) 
-  when length(RCnt) == Limit ->
-    ?vtrace("handle_req_counter_outgoing(~w) -> entry with"
-	"~n   Rid:          ~w"
-	"~n   length(RCnt): ~w", [Limit, Rid, length(RCnt)]),
-    case lists:delete(Rid, RCnt) of
-	NewRCnt when length(NewRCnt) < Limit ->
+update_req_counter_outgoing(
+  #state{limit = Limit} = S,
+  #transport{socket = Socket, req_refs = ReqRefs} = Transport,
+  ReqRef) ->
+    LengthReqRefs = length(ReqRefs),
+    ?vtrace("update_req_counter_outgoing() -> entry with~n"
+	    "   Limit:          ~w~n"
+	    "   ReqRef:          ~w~n"
+	    "   length(ReqRefs): ~w", [Limit, ReqRef, LengthReqRefs]),
+    NewReqRefs = lists:delete(ReqRef, ReqRefs),
+    (LengthReqRefs >= Limit) andalso (length(NewReqRefs) < Limit) andalso
+	begin
 	    ?vtrace("update_req_counter_outgoing -> "
-		"passed below limit: activate", []),
-	    active_once(Sock),
-	    S#state{rcnt = NewRCnt};
-	_ ->
-	    S
-    end;
-update_req_counter_outgoing(#state{limit = Limit, rcnt = RCnt} = S, 
-			    Rid) ->
-    ?vtrace("handle_req_counter_outgoing(~w) -> entry with"
-	"~n   Rid:          ~w"
-	"~n   length(RCnt): ~w", [Limit, Rid, length(RCnt)]),
-    NewRCnt = lists:delete(Rid, RCnt),
-    S#state{rcnt = NewRCnt}.
-    
-
-maybe_handle_recv(#state{usock = Sock, filter = FilterMod} = S, 
-		  Ip, Port, Packet) ->
-    case (catch FilterMod:accept_recv(Ip, Port)) of
+		    "passed below limit: activate", []),
+	    active_once(Socket)
+	end,
+    update_transport_req_refs(S, Transport, NewReqRefs).
+
+update_transport_req_refs(
+  #state{transports = Transports} = S,
+  #transport{socket = Socket} = T,
+  ReqRefs) ->
+    S#state{
+      transports =
+	  lists:keyreplace(
+	    Socket, #transport.socket, Transports,
+	    T#transport{req_refs = ReqRefs})}.
+
+
+maybe_handle_recv(
+  #state{filter = FilterMod} = S,
+  #transport{socket = Socket} = Transport,
+  From, Packet) ->
+    {From_1, From_2} = From,
+    case
+	try FilterMod:accept_recv(From_1, From_2)
+	catch
+	    Class:Exception ->
+		error_msg(
+		  "FilterMod:accept_recv(~p, ~p) crashed: ~w:~w~n    ~p",
+		  [From_1,From_2,Class,Exception,erlang:get_stacktrace()]),
+		true
+	end
+    of
 	false ->
 	    %% Drop the received packet 
 	    inc(netIfMsgInDrops),
-	    active_once(Sock),
+	    active_once(Socket),
 	    S;
-	_ ->
-	    handle_recv(S, Ip, Port, Packet)
+	Other ->
+	    case Other of
+		true ->
+		    ok;
+		_ ->
+		    error_msg(
+		      "FilterMod:accept_recv(~p, ~p) returned: ~p",
+		      [From_1,From_2,Other])
+	    end,
+	    handle_recv(S, Transport, From, Packet)
     end.
 
-handle_discovery_response(_Ip, _Port, #pdu{request_id = ReqId} = Pdu, 
-			  ManagerEngineId, 
-			  #state{usock = Sock, reqs = Reqs} = S) ->
-    case lists:keysearch(ReqId, 1, S#state.reqs) of
-	{value, {_, Pid}} ->
-	    active_once(Sock),
-	    Pid ! {snmp_discovery_response_received, Pdu, ManagerEngineId},
-	    NReqs = lists:keydelete(ReqId, 1, Reqs),
-	    S#state{reqs = NReqs};
-	_ ->
-	    %% Ouch, timeout? resend?
-	    S
-    end.
-	   
-handle_recv(#state{usock      = Sock, 
-		   mpd_state  = MpdState, 
-		   note_store = NS,
-		   log        = Log} = S, Ip, Port, Packet) ->
-    put(n1, erlang:now()),
-    LogF = fun(Type, Data) ->
-		   log(Log, Type, Data, Ip, Port)
-	   end,
-    Domain = snmp_conf:which_domain(Ip), % What the ****...
-    case (catch snmpa_mpd:process_packet(Packet, 
-					 Domain, {Ip, Port}, 
-					 MpdState, NS, LogF)) of
+handle_recv(
+  #state{mpd_state  = MpdState, note_store = NS, log = Log} = S,
+  #transport{socket = Socket} = Transport,
+  From, Packet) ->
+    put(n1, erlang:monotonic_time(micro_seconds)),
+    LogF =
+	fun(Type, Data) ->
+		log(Log, Type, Data, From)
+	end,
+    case (catch snmpa_mpd:process_packet(
+		  Packet, From, MpdState, NS, LogF)) of
 	{ok, _Vsn, Pdu, _PduMS, {discovery, ManagerEngineId}} ->
-	    handle_discovery_response(Ip, Port, Pdu, ManagerEngineId, S);
+	    handle_discovery_response(
+	      S, Transport, From, Pdu, ManagerEngineId);
 
 	{ok, _Vsn, Pdu, _PduMS, discovery} ->
-	    handle_discovery_response(Ip, Port, Pdu, undefined, S);
+	    handle_discovery_response(
+	      S, Transport, From, Pdu, undefined);
 
 	{ok, Vsn, Pdu, PduMS, ACMData} ->
 	    ?vlog("got pdu ~s", 
 		  [?vapply(snmp_misc, format, [256, "~w", [Pdu]])]),
-	    %% handle_recv_pdu(Ip, Port, Vsn, Pdu, PduMS, ACMData, S);
-	    maybe_handle_recv_pdu(Ip, Port, Vsn, Pdu, PduMS, ACMData, S);
+	    %% handle_recv_pdu(S, Transport, From, Vsn, Pdu, PduMS, ACMData);
+	    maybe_handle_recv_pdu(
+	      S, Transport, From, Vsn, Pdu, PduMS, ACMData);
 
 	{discarded, Reason} ->
 	    ?vlog("packet discarded for reason: ~s",
 		  [?vapply(snmp_misc, format, [256, "~w", [Reason]])]),
-	    active_once(Sock),
+	    active_once(Socket),
 	    S;
 
 	{discarded, Reason, ReportPacket} ->
 	    ?vlog("sending report for reason: "
 		"~n   ~s", 
 		[?vapply(snmp_misc, format, [256, "~w", [Reason]])]),
-	    (catch udp_send(S#state.usock, Ip, Port, ReportPacket)),
-	    active_once(Sock),
+	    (catch udp_send(Socket, From, ReportPacket)),
+	    active_once(Socket),
 	    S;
 	
 	{discovery, ReportPacket} ->
 	    ?vlog("sending discovery report", []),
-	    (catch udp_send(S#state.usock, Ip, Port, ReportPacket)),
-	    active_once(Sock),
+	    (catch udp_send(Socket, From, ReportPacket)),
+	    active_once(Socket),
 	    S;
 	
 	Error ->
 	    error_msg("processing of received message failed: "
                       "~n   ~p", [Error]),
-	    active_once(Sock),
+	    active_once(Socket),
 	    S
     end.
-    
-maybe_handle_recv_pdu(Ip, Port, Vsn, #pdu{type = Type} = Pdu, PduMS, ACMData, 
-		      #state{usock = Sock, filter = FilterMod} = S) ->
-    case (catch FilterMod:accept_recv_pdu(Ip, Port, Type)) of
+
+handle_discovery_response(
+  #state{reqs = Reqs} = S,
+  #transport{socket = Socket},
+  _From,
+  #pdu{request_id = ReqId} = Pdu,
+  ManagerEngineId) ->
+    case lists:keyfind(ReqId, 1, S#state.reqs) of
+	{ReqId, Pid} ->
+	    active_once(Socket),
+	    Pid ! {snmp_discovery_response_received, Pdu, ManagerEngineId},
+	    %% XXX Strange... Reqs from this Pid should be reaped
+	    %% at process exit by clear_reqs/2 so the following
+	    %% should be redundant.
+	    NReqs = lists:keydelete(ReqId, 1, Reqs),
+	    S#state{reqs = NReqs};
+	false ->
+	    %% Ouch, timeout? resend?
+	    S
+    end.
+
+maybe_handle_recv_pdu(
+  #state{filter = FilterMod} = S,
+  #transport{socket = Socket} = Transport,
+  From, Vsn,
+  #pdu{type = Type} = Pdu, PduMS, ACMData) ->
+    {From_1, From_2} = From,
+    case
+	try FilterMod:accept_recv_pdu(From_1, From_2, Type)
+	catch
+	    Class:Exception ->
+		error_msg(
+		  "FilterMod:accept_recv_pdu(~p, ~p, ~p) crashed: ~w:~w~n"
+		  "    ~p",
+		  [From_1,From_2,Type,Class,Exception,
+		   erlang:get_stacktrace()]),
+		true
+	end
+    of
 	false ->
 	    inc(netIfPduInDrops),
-	    active_once(Sock),
-	    ok;
-	_ ->
-	    handle_recv_pdu(Ip, Port, Vsn, Pdu, PduMS, ACMData, S)
-    end;
-maybe_handle_recv_pdu(Ip, Port, Vsn, Pdu, PduMS, ACMData, S) ->
-    handle_recv_pdu(Ip, Port, Vsn, Pdu, PduMS, ACMData, S).
+	    active_once(Socket),
+	    S;
+	Other ->
+	    case Other of
+		true ->
+		    ok;
+		_ ->
+		    error_msg(
+		      "FilterMod:accept_recv_pdu(~p, ~p, ~p) returned: ~p",
+		      [From_1,From_2,Type,Other])
+	    end,
+	    handle_recv_pdu(S, Transport, From, Vsn, Pdu, PduMS, ACMData)
+    end.
 
-handle_recv_pdu(Ip, Port, Vsn, #pdu{type = 'get-response'} = Pdu, 
-		_PduMS, _ACMData, #state{usock = Sock} = S) ->
-    active_once(Sock),
-    handle_response(Vsn, Pdu, {Ip, Port}, S),
+handle_recv_pdu(
+  #state{reqs = Reqs} = S,
+  #transport{socket = Socket},
+  From, Vsn,
+  #pdu{type = 'get-response', request_id = ReqId} = Pdu,
+  _PduMS, _ACMData) ->
+    active_once(Socket),
+    case lists:keyfind(ReqId, 1, Reqs) of
+	{ReqId, Pid} ->
+	    ?vdebug("handle_recv_pdu -> "
+		    "~n   send response to receiver ~p", [Pid]),
+	    Pid ! {snmp_response_received, Vsn, Pdu, From};
+	false ->
+	    ?vdebug("handle_recv_pdu -> "
+		    "~n   No receiver available for response pdu", [])
+    end,
     S;
-handle_recv_pdu(Ip, Port, Vsn, #pdu{request_id = Rid, type = Type} = Pdu, 
-		PduMS, ACMData, #state{master_agent = Pid} = S) 
-  when ((Type =:= 'get-request') orelse
-	(Type =:= 'get-next-request') orelse
-	(Type =:= 'get-bulk-request')) ->
-    ?vtrace("handle_recv_pdu -> received get (~w)", [Type]),
-    Pid ! {snmp_pdu, Vsn, Pdu, PduMS, ACMData, {Ip, Port}, []},
-    update_req_counter_incomming(S, Rid);
-handle_recv_pdu(Ip, Port, Vsn, Pdu, PduMS, ACMData, 
-		#state{usock = Sock, master_agent = Pid} = S) ->
+handle_recv_pdu(
+  #state{master_agent = Pid} = S,
+  #transport{} = Transport,
+  From, Vsn,
+  #pdu{type = Type} = Pdu,
+  PduMS, ACMData)
+  when Type =:= 'set-request';
+       Type =:= 'get-request';
+       Type =:= 'get-next-request';
+       Type =:= 'get-bulk-request' ->
+    ?vtrace("handle_recv_pdu -> received request (~w)", [Type]),
+    ReqRef = make_ref(),
+    Extra = [{request_ref, ReqRef}],
+    Pid ! {snmp_pdu, Vsn, Pdu, PduMS, ACMData, From, Extra},
+    NewS = update_req_counter_incoming(S, Transport, ReqRef),
+    ?vdebug("handle_recv_pdu -> ~p", [NewS]),
+    NewS;
+handle_recv_pdu(
+  #state{master_agent = Pid} = S,
+  #transport{socket = Socket},
+  From, Vsn, Pdu, PduMS, ACMData) ->
     ?vtrace("handle_recv_pdu -> received other request", []),
-    active_once(Sock),
-    Pid ! {snmp_pdu, Vsn, Pdu, PduMS, ACMData, {Ip, Port}, []},
+    active_once(Socket),
+    Pid ! {snmp_pdu, Vsn, Pdu, PduMS, ACMData, From, []},
     S.
 
 
-maybe_handle_reply_pdu(#state{filter = FilterMod} = S, Vsn, 
-		       #pdu{request_id = Rid} = Pdu, 
-		       Type, ACMData, {Ip, Port} = Dest) ->
-    S1 = update_req_counter_outgoing(S, Rid),
-    case (catch FilterMod:accept_send_pdu([{Ip, Port}], Type)) of
+maybe_handle_reply_pdu(
+  #state{filter = FilterMod, transports = Transports} = S,
+  #transport{} = Transport,
+  Vsn,
+  #pdu{} = Pdu,
+  Type, ACMData, To) ->
+    %%
+    Addresses = [fix_filter_address(Transports, To)],
+    case
+	try
+	    FilterMod:accept_send_pdu(Addresses, Type)
+	catch
+	    Class:Exception ->
+		error_msg(
+		  "FilterMod:accept_send_pdu(~p, ~p) crashed: ~w:~w~n    ~p",
+		  [Addresses, Type, Class, Exception,
+		   erlang:get_stacktrace()]),
+		true
+	end
+    of
 	false ->
 	    inc(netIfPduOutDrops),
 	    ok;
-	_ ->
-	    handle_reply_pdu(S1, Vsn, Pdu, Type, ACMData, Dest)
-    end,
-    S1.
-
-handle_reply_pdu(#state{log    = Log,
-			usock  = Sock, 
-			filter = FilterMod}, 
-		 Vsn, Pdu, Type, ACMData, {Ip, Port}) ->
-    LogF = fun(Type2, Data) ->
-		   log(Log, Type2, Data, Ip, Port)
-	   end,
+	Other ->
+	    case Other of
+		true ->
+		    ok;
+		_ ->
+		    error_msg(
+		      "FilterMod:accept_send_pdu(~p, ~p) returned: ~p",
+		      [Addresses,Type,Other])
+	    end,
+	    handle_reply_pdu(S, Transport, Vsn, Pdu, Type, ACMData, To)
+    end.
+
+handle_reply_pdu(
+  #state{log = Log} = S,
+  #transport{} = Transport,
+  Vsn,
+  #pdu{} = Pdu,
+  Type, ACMData, To) ->
+    %%
+    LogF =
+	fun(Type2, Data) ->
+		log(Log, Type2, Data, To)
+	end,
     case (catch snmpa_mpd:generate_response_msg(Vsn, Pdu, Type,
 						ACMData, LogF)) of
 	{ok, Packet} ->
 	    ?vinfo("time in agent: ~w mysec", [time_in_agent()]),
-	    maybe_udp_send(FilterMod, Sock, Ip, Port, Packet);
+	    try maybe_udp_send(S, Transport, To, Packet)
+	    catch
+		{Reason, Sz} ->
+		    error_msg("Cannot send message "
+			      "~n   size:   ~p"
+			      "~n   reason: ~p"
+			      "~n   pdu:    ~p",
+			      [Sz, Reason, Pdu])
+	    end;
 	{discarded, Reason} ->
 	    ?vlog("handle_reply_pdu -> "
 		  "~n   reply discarded for reason: ~s", 
@@ -652,105 +888,116 @@ handle_reply_pdu(#state{log    = Log,
 	    ok;
 	{'EXIT', Reason} ->
 	    user_err("failed generating response message: "
-		     "~nPDU: ~w~n~w", [Pdu, Reason])
+		     "~nPDU: ~p~n~p", [Pdu, Reason])
     end.
-    
-
-process_taddrs(To) ->
-    process_taddrs(To, []).
-
-process_taddrs([], Acc) ->
-    lists:reverse(Acc);
-%% v3 
-process_taddrs([{{_Domain, AddrAndPort}, _SecData}|T], Acc) ->
-    process_taddrs(T, [AddrAndPort|Acc]);
-%% v1 & v2
-process_taddrs([{_Domain, AddrAndPort}|T], Acc) ->
-    process_taddrs(T, [AddrAndPort|Acc]).
 
-merge_taddrs(To1, To2) ->
-    merge_taddrs(To1, To2, []).
-
-merge_taddrs([], _To2, Acc) ->
-    lists:reverse(Acc);
-%% v3
-merge_taddrs([{{_, AddrAndPort}, _} = H|To1], To2, Acc) ->
-    case lists:member(AddrAndPort, To2) of
-	true ->
-	    merge_taddrs(To1, To2, [H|Acc]);
-	false ->
-	    merge_taddrs(To1, To2, Acc)
-    end;
-%% v1 & v2
-merge_taddrs([{_, AddrAndPort} = H|To1], To2, Acc) ->
-    case lists:member(AddrAndPort, To2) of
-	true ->
-	    merge_taddrs(To1, To2, [H|Acc]);
-	false ->
-	    merge_taddrs(To1, To2, Acc)
-    end;
-merge_taddrs([_Crap|To1], To2, Acc) ->
-    merge_taddrs(To1, To2, Acc).
 
 
-maybe_handle_send_pdu(#state{filter = FilterMod} = S,
-		      Vsn, Pdu, MsgData, To0, From) ->
+maybe_handle_send_pdu(
+  #state{filter = FilterMod, transports = Transports} = S,
+  Vsn, Pdu, MsgData, TDomAddrSecs, From) ->
 
-    ?vtrace("maybe_handle_send_pdu -> entry with"
-	    "~n   FilterMod: ~p"
-	    "~n   To0:       ~p", [FilterMod, To0]),
+    ?vtrace("maybe_handle_send_pdu -> entry with~n"
+	    "   FilterMod: ~p~n"
+	    "   TDomAddrSecs: ~p", [FilterMod, TDomAddrSecs]),
 
-    To1 = snmpa_mpd:process_taddrs(To0),
-    To2 = process_taddrs(To1),
+    DomAddrSecs = snmpa_mpd:process_taddrs(TDomAddrSecs),
+    AddressesToFilter =
+	case is_legacy_transports(Transports) of
+	    true ->
+		[fix_filter_legacy_mpd_address(DAS)
+		 || DAS <- DomAddrSecs];
+	    false ->
+		[fix_filter_mpd_address(DAS)
+		 || DAS <- DomAddrSecs]
+	end,
 
-    case (catch FilterMod:accept_send_pdu(To2, pdu_type_of(Pdu))) of
+    Type = pdu_type_of(Pdu),
+
+    case
+	try FilterMod:accept_send_pdu(AddressesToFilter, Type)
+	catch
+	    Class:Exception ->
+		error_msg(
+		  "FilterMod:accept_send_pdu(~p, ~p) crashed: ~w:~w~n    ~p",
+		  [AddressesToFilter,Type,
+		   Class,Exception,erlang:get_stacktrace()]),
+		true
+	end
+    of
 	false ->
 	    inc(netIfPduOutDrops),
 	    ok;
 	true ->
-	    handle_send_pdu(S, Vsn, Pdu, MsgData, To1, From);
-	To3 when is_list(To3) ->
-	    To4 = merge_taddrs(To1, To3),
-	    ?vtrace("maybe_handle_send_pdu -> To4: "
-		    "~n   ~p", [To4]),
-	    handle_send_pdu(S, Vsn, Pdu, MsgData, To4, From);
-	_ ->
-	    handle_send_pdu(S, Vsn, Pdu, MsgData, To1, From)
+	    handle_send_pdu(S, Vsn, Pdu, MsgData, DomAddrSecs, From);
+	FilteredAddresses when is_list(FilteredAddresses) ->
+	    FilteredDomAddrSecs =
+		case is_legacy_transports(Transports) of
+		    true ->
+			[DAS ||
+			    DAS <- DomAddrSecs,
+			    lists:member(
+				fix_filter_legacy_mpd_address(DAS),
+				FilteredAddresses)];
+		    false ->
+			[DAS ||
+			    DAS <- DomAddrSecs,
+			    lists:member(
+				fix_filter_mpd_address(DAS),
+				FilteredAddresses)]
+		end,
+	    ?vtrace("maybe_handle_send_pdu -> FilteredDomAddrSecs:~n"
+		    "   ~p", [FilteredDomAddrSecs]),
+	    handle_send_pdu(S, Vsn, Pdu, MsgData, FilteredDomAddrSecs, From);
+	Other ->
+	    error_msg(
+	      "FilterMod:accept_send_pdu(~p, ~p) returned: ~p",
+	      [AddressesToFilter,Type,Other]),
+	    handle_send_pdu(S, Vsn, Pdu, MsgData, DomAddrSecs, From)
     end.
 
-handle_send_pdu(#state{note_store = NS} = S, Vsn, Pdu, MsgData, To, From) ->
-    
-    ?vtrace("handle_send_pdu -> entry with"
-	    "~n   Pdu: ~p"
-	    "~n   To:  ~p", [Pdu, To]),
+handle_send_pdu(
+  #state{note_store = NS} = S,
+  Vsn, Pdu, MsgData, DomAddrSecs, From) ->
+    %%
+    ?vtrace("handle_send_pdu -> entry with~n"
+	    "   Pdu:         ~p~n"
+	    "   DomAddrSecs: ~p", [Pdu, DomAddrSecs]),
 
-    case (catch snmpa_mpd:generate_msg(Vsn, NS, Pdu, MsgData, To)) of
+    case (catch snmpa_mpd:generate_msg(
+		  Vsn, NS, Pdu, MsgData, DomAddrSecs)) of
 	{ok, Addresses} ->
-	    handle_send_pdu(S, Pdu, Addresses);
+	    do_handle_send_pdu(S, Pdu, Addresses);
 	{discarded, Reason} ->
 	    ?vlog("handle_send_pdu -> "
 		  "~n   PDU ~p not sent due to ~p", [Pdu, Reason]),
 	    ok;
         {'EXIT', Reason} ->
             user_err("failed generating message: "
-                     "~nPDU: ~w~n~w", [Pdu, Reason]),
+                     "~nPDU: ~p~n~p", [Pdu, Reason]),
             ok
     end,
     case From of
 	undefined ->
 	    S;
-	Pid ->
+	Pid when is_pid(Pid) ->
 	    ?vtrace("link to ~p and add to request list", [Pid]),
 	    link(Pid),
-	    NReqs = snmp_misc:keyreplaceadd(Pid, 2, S#state.reqs, 
-					    {Pdu#pdu.request_id, From}),
+	    NReqs =
+		snmp_misc:keyreplaceadd(
+		  Pid, 2, S#state.reqs, {Pdu#pdu.request_id, From}),
 	    S#state{reqs = NReqs}
     end.
 
 
-handle_send_discovery(#state{note_store = NS} = S, 
-		      Pdu, MsgData, 
-		      To, From) ->
+handle_send_discovery(
+  #state{
+     note_store = NS,
+     log        = Log,
+     reqs       = Reqs,
+     transports = Transports} = S,
+  #pdu{type = Type, request_id = ReqId} = Pdu,
+  MsgData, To, From) when is_pid(From) ->
     
     ?vtrace("handle_send_discovery -> entry with"
 	    "~n   Pdu:     ~p"
@@ -759,155 +1006,173 @@ handle_send_discovery(#state{note_store = NS} = S,
 	    "~n   From:    ~p", [Pdu, MsgData, To, From]),
 
     case (catch snmpa_mpd:generate_discovery_msg(NS, Pdu, MsgData, To)) of
-	{ok, {Packet, {Ip, Port}}} ->
-	    handle_send_discovery(S, Pdu, Packet, Ip, Port, From);
+	{ok, {Domain, Address, Packet}} ->
+	    case select_transport_from_domain(Domain, Transports) of
+		false ->
+		    error_msg(
+		      "Can not find transport to: ~s",
+		      [format_address(To)]),
+		    S;
+		#transport{socket = Socket} ->
+		    log(Log, Type, Packet, {Domain, Address}),
+		    udp_send(Socket, {Domain, Address}, Packet),
+		    ?vtrace("handle_send_discovery -> sent (~w)", [ReqId]),
+		    NReqs = snmp_misc:keyreplaceadd(From, 2, Reqs, {ReqId, From}),
+		    S#state{reqs = NReqs}
+	    end;
 	{discarded, Reason} ->
 	    ?vlog("handle_send_discovery -> "
 		  "~n   Discovery PDU ~p not sent due to ~p", [Pdu, Reason]),
-	    ok;
+	    S;
         {'EXIT', Reason} ->
             user_err("failed generating discovery message: "
-                     "~n   PDU:    ~w"
-		     "~n   Reason: ~w", [Pdu, Reason]),
-            ok
+                     "~n   PDU:    ~p"
+		     "~n   Reason: ~p", [Pdu, Reason]),
+            S
     end.
 
-handle_send_discovery(#state{log   = Log, 
-			     usock = Sock,
-			     reqs  = Reqs} = S, 
-		      #pdu{type       = Type, 
-			   request_id = ReqId}, 
-		      Packet, Ip, Port, From) 
-  when is_binary(Packet) ->
-    log(Log, Type, Packet, Ip, Port),
-    udp_send(Sock, Ip, Port, Packet),
-    ?vtrace("handle_send_discovery -> sent (~w)", [ReqId]),
-    NReqs = snmp_misc:keyreplaceadd(From, 2, Reqs, {ReqId, From}),
-    S#state{reqs = NReqs}.
-
 
-handle_send_pdu(S, #pdu{type = Type} = Pdu, Addresses) ->
-    handle_send_pdu(S, Type, Pdu, Addresses);
-handle_send_pdu(S, Trap, Addresses) ->
-    handle_send_pdu(S, trappdu, Trap, Addresses).
+do_handle_send_pdu(S, #pdu{type = Type} = Pdu, Addresses) ->
+    do_handle_send_pdu(S, Type, Pdu, Addresses);
+do_handle_send_pdu(S, Trap, Addresses) ->
+    do_handle_send_pdu(S, trappdu, Trap, Addresses).
 
-handle_send_pdu(S, Type, Pdu, Addresses) ->
-    case (catch handle_send_pdu1(S, Type, Addresses)) of
+do_handle_send_pdu(S, Type, Pdu, Addresses) ->
+    try do_handle_send_pdu1(S, Type, Addresses)
+    catch
 	{Reason, Sz} ->
-	    error_msg("Cannot send message "
-		      "~n   size:   ~p"
-		      "~n   reason: ~p"
-		      "~n   pdu:    ~p",
-		      [Sz, Reason, Pdu]);
-	_ ->
-	    ok
-    end.
-	    
-handle_send_pdu1(#state{log    = Log, 
-			usock  = Sock,
-			filter = FilterMod}, Type, Addresses) ->
-    SendFun = 
-	fun({snmpUDPDomain, {Ip, Port}, Packet}) 
-	      when is_binary(Packet) ->
-		?vdebug("[snmpUDPDomain] sending packet:"
-			"~n   size: ~p"
-			"~n   to:   ~p:~p",
-			[sz(Packet), Ip, Port]),
-		maybe_udp_send(FilterMod, Log, Type, Sock, Ip, Port, Packet);
-
-	   ({snmpUDPDomain, {Ip, Port}, {Packet, _LogData}}) 
-	      when is_binary(Packet) ->
-		?vdebug("[snmpUDPDomain] sending encrypted packet:"
-			"~n   size: ~p"
-			"~n   to:   ~p:~p",
-			[sz(Packet), Ip, Port]),
-		maybe_udp_send(FilterMod, Log, Type, Sock, Ip, Port, Packet);
-
-	   ({transportDomainUdpIpv4, {Ip, Port}, Packet}) 
-	      when is_binary(Packet) ->
-		?vdebug("[transportDomainUdpIpv4] sending packet:"
-			"~n   size: ~p"
-			"~n   to:   ~p:~p",
-			[sz(Packet), Ip, Port]),
-		maybe_udp_send(FilterMod, Log, Type, Sock, Ip, Port, Packet);
-
-	   ({transportDomainUdpIpv4, {Ip, Port}, {Packet, _LogData}}) 
-	      when is_binary(Packet) ->
-		?vdebug("[transportDomainUdpIpv4] sending encrypted packet:"
-			"~n   size: ~p"
-			"~n   to:   ~p:~p",
-			[sz(Packet), Ip, Port]),
-		maybe_udp_send(FilterMod, Log, Type, Sock, Ip, Port, Packet);
-
-	   ({transportDomainUdpIpv6, {Ip, Port}, Packet}) 
-	      when is_binary(Packet) ->
-		?vdebug("[transportDomainUdpIpv6] sending packet:"
-			"~n   size: ~p"
-			"~n   to:   ~p:~p",
-			[sz(Packet), Ip, Port]),
-		maybe_udp_send(FilterMod, Log, Type, Sock, Ip, Port, Packet);
-
-	   ({transportDomainUdpIpv6, {Ip, Port}, {Packet, _LogData}}) 
-	      when is_binary(Packet) ->
-		?vdebug("[transportDomainUdpIpv6] sending encrypted packet:"
-			"~n   size: ~p"
-			"~n   to:   ~p:~p",
-			[sz(Packet), Ip, Port]),
-		maybe_udp_send(FilterMod, Log, Type, Sock, Ip, Port, Packet);
-
-	   (_X) ->
-		?vlog("** bad res: ~p", [_X]),
-		ok
-	end, 
-    lists:foreach(SendFun, Addresses).
-
-
-handle_response(Vsn, Pdu, From, S) ->
-    case lists:keysearch(Pdu#pdu.request_id, 1, S#state.reqs) of
-	{value, {_, Pid}} ->
-	    ?vdebug("handle_response -> "
-		    "~n   send response to receiver ~p", [Pid]),
-	    Pid ! {snmp_response_received, Vsn, Pdu, From};
-	_ ->
-	    ?vdebug("handle_response -> "
-		    "~n   No receiver available for response pdu", [])
+	    error_msg(
+	      "Can not send message~n"
+	      "   size:   ~p~n"
+	      "   reason: ~p~n"
+	      "   pdu:    ~p",
+	      [Sz, Reason, Pdu])
     end.
 
-maybe_udp_send(FilterMod, Sock, Ip, Port, Packet) ->
-    case (catch FilterMod:accept_send(Ip, Port)) of
+do_handle_send_pdu1(
+  #state{transports = Transports} = S,
+  Type, Addresses) ->
+    lists:foreach(
+      fun ({Domain, Address, Packet}) when is_binary(Packet) ->
+	      ?vdebug(
+		 "[~w] sending packet:~n"
+		 "   size: ~p~n"
+		 "   to:   ~p", [Domain, sz(Packet), Address]),
+	      To = {Domain, Address},
+	      case select_transport_from_domain(Domain, Transports) of
+		  false ->
+		      error_msg(
+			"Can not find transport~n"
+			"   size:   ~p~n"
+			"   to:     ~s",
+			[sz(Packet), format_address(To)]);
+		  Transport ->
+		      maybe_udp_send(S, Transport, To, Packet)
+	      end;
+	  ({Domain, Address, {Packet, LogData}}) when is_binary(Packet) ->
+	      ?vdebug(
+		 "[~w] sending encrypted packet:~n"
+		 "   size: ~p~n"
+		 "   to:   ~p", [Domain, sz(Packet), Address]),
+	      To = {Domain, Address},
+	      case select_transport_from_domain(Domain, Transports) of
+		  false ->
+		      error_msg(
+			"Can not find transport~n"
+			"   size:   ~p~n"
+			"   to:     ~s",
+			[sz(Packet), format_address(To)]);
+		  Transport ->
+		      maybe_udp_send(S, Transport, To, Packet, Type, LogData)
+	      end
+      end,
+      Addresses).
+
+maybe_udp_send(
+  #state{filter = FilterMod, transports = Transports},
+  #transport{socket = Socket},
+  To, Packet) ->
+    {To_1, To_2} = fix_filter_address(Transports, To),
+    case
+	try FilterMod:accept_send(To_1, To_2)
+	catch
+	    Class:Exception ->
+		error_msg(
+		  "FilterMod:accept_send(~p, ~p) crashed: ~w:~w~n    ~p",
+		  [To_1,To_2,Class,Exception,erlang:get_stacktrace()]),
+		true
+	end
+    of
 	false ->
 	    inc(netIfMsgOutDrops),
 	    ok;
-	_ ->
-	    (catch udp_send(Sock, Ip, Port, Packet))
+	Other ->
+	    case Other of
+		true ->
+		    ok;
+		_ ->
+		    error_msg(
+		      "FilterMod:accept_send(~p, ~p) returned: ~p",
+		      [To_1,To_2,Other])
+	    end,
+	    udp_send(Socket, To, Packet)
     end.
 
-maybe_udp_send(FilterMod, AtLog, Type, Sock, Ip, Port, Packet) ->
-    case (catch FilterMod:accept_send(Ip, Port)) of
+maybe_udp_send(
+  #state{log = Log, filter = FilterMod, transports = Transports},
+  #transport{socket = Socket},
+  To, Packet, Type, _LogData) ->
+    {To_1, To_2} = fix_filter_address(Transports, To),
+    case
+	try FilterMod:accept_send(To_1, To_2)
+	catch
+	    Class:Exception ->
+		error_msg(
+		  "FilterMod:accept_send(~p, ~p) crashed for: ~w:~w~n    ~p",
+		  [To_1, To_2, Class, Exception, erlang:get_stacktrace()]),
+		true
+	end
+    of
 	false ->
 	    inc(netIfMsgOutDrops),
 	    ok;
-	_ ->
-	    log(AtLog, Type, Packet, Ip, Port),
-	    (catch udp_send(Sock, Ip, Port, Packet))
+	Other ->
+	    case Other of
+		true ->
+		    ok;
+		_ ->
+		    error_msg(
+		      "FilterMod:accept_send(~p, ~p) returned: ~p",
+		      [To_1,To_2,Other])
+	    end,
+	    log(Log, Type, Packet, To),
+	    udp_send(Socket, To, Packet)
     end.
 
-
-udp_send(UdpId, AgentIp, UdpPort, B) ->
-    case (catch gen_udp:send(UdpId, AgentIp, UdpPort, B)) of
+udp_send(Socket, To, B) ->
+    {IpAddr, IpPort} =
+	case To of
+	    {Domain, Addr} when is_atom(Domain) ->
+		Addr;
+	    {_, P} = Addr when is_integer(P) ->
+		Addr
+	end,
+    try gen_udp:send(Socket, IpAddr, IpPort, B) of
 	{error, emsgsize} ->
 	    %% From this message we cannot recover, so exit sending loop
 	    throw({emsgsize, sz(B)});
 	{error, ErrorReason} ->
 	    error_msg("[error] cannot send message "
 		      "(destination: ~p:~p, size: ~p, reason: ~p)",
-		      [AgentIp, UdpPort, sz(B), ErrorReason]);
-	{'EXIT', ExitReason} ->
-	    error_msg("[exit] cannot send message "
-		      "(destination: ~p:~p, size: ~p, reason: ~p)",
-		      [AgentIp, UdpPort, sz(B), ExitReason]);
-	_ ->
+		      [IpAddr, IpPort, sz(B), ErrorReason]);
+	ok ->
 	    ok
+    catch
+	error:ExitReason ->
+	    error_msg("[exit] cannot send message "
+		      "(destination: ~p:~p, size: ~p, reason: ~p, at: ~p)",
+		      [IpAddr, IpPort, sz(B), ExitReason,
+		       erlang:get_stacktrace()])
     end.
 
 sz(L) when is_list(L) -> length(L);
@@ -957,6 +1222,75 @@ active_once(Sock) ->
     inet:setopts(Sock, [{active, once}]).
 
 
+select_transport_from_req_ref(_, []) ->
+    false;
+select_transport_from_req_ref(
+  ReqRef,
+  [#transport{req_refs = ReqRefs} = Transport | Transports]) ->
+    case lists:member(ReqRef, ReqRefs) of
+	true ->
+	    Transport;
+	false ->
+	    select_transport_from_req_ref(ReqRef, Transports)
+    end.
+
+select_transport_from_domain(Domain, Transports) when is_atom(Domain) ->
+    Pos = #transport.domain,
+    case lists:keyfind(Domain, Pos, Transports) of
+	#transport{domain = Domain} = Transport ->
+	    Transport;
+	false when Domain == snmpUDPDomain ->
+	    lists:keyfind(transportDomainUdpIpv4, Pos, Transports);
+	false when Domain == transportDomainUdpIpv4 ->
+	    lists:keyfind(snmpUDPDomain, Pos, Transports);
+	false ->
+	    false
+    end.
+
+address_to_domain({Domain, _Addr}) when is_atom(Domain) ->
+    Domain;
+address_to_domain({_Ip, Port}) when is_integer(Port) ->
+    snmpUDPDomain.
+
+%% If the agent uses legacy snmpUDPDomain e.g has not set
+%% intAgentTransportDomain, then make sure
+%% snmpa_network_interface_filter gets legacy arguments
+%% to not break backwards compatibility.
+%%
+fix_filter_address(Transports, Address) ->
+    case is_legacy_transports(Transports) of
+	true ->
+	    case Address of
+		{Domain, Addr} when is_atom(Domain) ->
+		    Addr;
+		{_, IpPort} = Addr when is_integer(IpPort) ->
+		    Addr
+	    end;
+	false ->
+	    Address
+    end.
+
+is_legacy_transports([#transport{domain = snmpUDPDomain}]) ->
+    true;
+is_legacy_transports([#transport{} | _]) ->
+    false.
+
+fix_filter_legacy_mpd_address(Domain_Address_SecData) ->
+    case Domain_Address_SecData of
+	{{Domain, Addr}, _SecData} when is_atom(Domain) -> % v3
+	    Addr;
+	{Domain, Addr} when is_atom(Domain) -> % v1 & v2
+	    Addr
+    end.
+
+fix_filter_mpd_address(Domain_Address_SecData) ->
+    case Domain_Address_SecData of
+	{{Domain, _Addr} = Address, _SecData} when is_atom(Domain) -> % v3
+	    Address;
+	{Domain, _Addr} = Address when is_atom(Domain) -> % v1 & v2
+	    Address
+    end.
+
 %%%-----------------------------------------------------------------
 
 handle_set_log_type(#state{log = {Log, OldValue}} = State, NewType) 
@@ -1046,15 +1380,7 @@ do_close_log(_) ->
 %%% DEBUG FUNCTIONS
 %%%-----------------------------------------------------------------
 time_in_agent() ->
-    subtr(erlang:now(), get(n1)).
-
-subtr({X1,Y1,Z1}, {X1,Y1,Z2}) ->
-    Z1 - Z2;
-subtr({X1,Y1,Z1}, {X1,Y2,Z2}) ->
-    ((Y1-Y2) * 1000000) + (Z1 - Z2);
-subtr({X1,Y1,Z1}, {X2,Y2,Z2}) ->
-    ((X1 - X2) * 1000000000000) + ((Y1 - Y2) * 1000000) + (Z1 - Z2).
-
+    erlang:monotonic_time(micro_seconds) - get(n1).
 
 %% ----------------------------------------------------------------
 
@@ -1113,37 +1439,39 @@ get_counters([Counter|Counters], Acc) ->
 
 %% ----------------------------------------------------------------
 
-ip_opt_bind_to_ip_address(Opts, Ip) ->
-    case get_bind_to_ip_address(Opts) of
-	true ->
-	    [{ip, list_to_tuple(Ip)}];
-	_ ->
-	    []
-    end.
-
-ip_opt_no_reuse_address(Opts) ->
-    case get_no_reuse_address(Opts) of
-	false ->
-	    [{reuseaddr, true}];
-	_ ->
-	    []
-    end.
-
-ip_opt_recbuf(Opts) ->
-    case get_recbuf(Opts) of
-	use_default ->
-	    [];
-	Sz ->
-	    [{recbuf, Sz}]
-    end.
-
-ip_opt_sndbuf(Opts) ->
-    case get_sndbuf(Opts) of
-	use_default ->
-	    [];
-	Sz ->
-	    [{sndbuf, Sz}]
-    end.
+socket_opts(Domain, {IpAddr, IpPort}, Opts) ->
+    [IpPort, % Picked off at socket open, separate argument
+     binary
+     |   case snmp_conf:tdomain_to_family(Domain) of
+	     inet6 = Family ->
+		 [Family, {ipv6_v6only, true}];
+	     Family ->
+		 [Family]
+	 end ++
+	 case get_bind_to_ip_address(Opts) of
+	     true ->
+		 [{ip, IpAddr}];
+	     _ ->
+		 []
+	 end ++
+	 case get_no_reuse_address(Opts) of
+	     false ->
+		 [{reuseaddr, true}];
+	     _ ->
+		 []
+	 end ++
+	 case get_recbuf(Opts) of
+	     use_default ->
+		 [];
+	     Sz ->
+		 [{recbuf, Sz}]
+	 end ++
+	 case get_sndbuf(Opts) of
+	     use_default ->
+		 [];
+	     Sz ->
+		 [{sndbuf, Sz}]
+	 end].
 
 
 %% ----------------------------------------------------------------
@@ -1203,6 +1531,9 @@ get_bind_to_ip_address(Opts) ->
 error_msg(F,A) -> 
     ?snmpa_error("NET-IF server: " ++ F, A).
 
+info_msg(F,A) ->
+    ?snmpa_info("NET-IF server: " ++ F, A).
+
 %% --- 
 
 user_err(F, A) ->
@@ -1227,14 +1558,14 @@ call(Pid, Req) ->
 		       
 %% ----------------------------------------------------------------
 
-get_info(#state{usock = Id, reqs = Reqs}) ->
+get_info(#state{transports = Transports, reqs = Reqs}) ->
     ProcSize = proc_mem(self()),
-    PortInfo = get_port_info(Id),
     Counters = get_counters(),
-    [{reqs,           Reqs}, 
-     {counters,       Counters}, 
-     {process_memory, ProcSize}, 
-     {port_info,      PortInfo}].
+    [{reqs,           Reqs},
+     {counters,       Counters},
+     {process_memory, ProcSize}
+     | [{port_info, get_port_info(Socket)}
+	|| #transport{socket = Socket} <- Transports]].
 
 proc_mem(P) when is_pid(P) ->
     case (catch erlang:process_info(P, memory)) of
@@ -1299,10 +1630,3 @@ get_port_info(Id) ->
 
 
 %% ----------------------------------------------------------------
-
-% i(F) ->
-%     i(F, []).
-
-% i(F, A) ->
-%     io:format("~p: " ++ F ++ "~n", [?MODULE|A]).
-
diff --git a/lib/snmp/src/agent/snmpa_net_if_filter.erl b/lib/snmp/src/agent/snmpa_net_if_filter.erl
index 989f7c95b3..1db8609eaf 100644
--- a/lib/snmp/src/agent/snmpa_net_if_filter.erl
+++ b/lib/snmp/src/agent/snmpa_net_if_filter.erl
@@ -1,52 +1,67 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2007-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
 -module(snmpa_net_if_filter).
 
--export([accept_recv/2, 
-	 accept_send/2,
-	 accept_recv_pdu/3,
-	 accept_send_pdu/2]).
+%% Behaviour
+-export([accept_recv/2, accept_send/2, accept_recv_pdu/3, accept_send_pdu/2]).
 
 -include("snmp_debug.hrl").
 
-accept_recv(_Addr, _Port) ->
-    ?d("accept_recv -> entry with"
-       "~n   Addr: ~p"
-       "~n   Port: ~p", [_Addr, _Port]),
+accept_recv(Domain, _Address) when is_atom(Domain) ->
+    ?d("accept_recv -> entry with~n"
+       "   Domain:  ~p~n"
+       "   Address: ~p", [Domain, _Address]),
+    true;
+accept_recv(_Addr, Port) when is_integer(Port) ->
+    ?d("accept_recv -> entry with~n"
+       "   Addr: ~p~n"
+       "   Port: ~p", [_Addr, Port]),
     true.
 
-accept_send(_Addr, _Port) ->
-    ?d("accept_send -> entry with"
-       "~n   Addr: ~p"
-       "~n   Port: ~p", [_Addr, _Port]),
+accept_send(Domain, _Address) when is_atom(Domain) ->
+    ?d("accept_send -> entry with~n"
+       "   Domain:  ~p~n"
+       "   Address: ~p", [Domain, _Address]),
+    true;
+accept_send(_Addr, Port) when is_integer(Port) ->
+    ?d("accept_send -> entry with~n"
+       "   Addr: ~p~n"
+       "   Port: ~p", [_Addr, Port]),
     true.
 
-accept_recv_pdu(_Addr, _Port, _PduType) ->
-    ?d("accept_recv_pdu -> entry with"
-       "~n   Addr: ~p"
-       "~n   Port: ~p"
-       "~n   PduType: ~p", [_Addr, _Port, _PduType]),
+accept_recv_pdu(Domain, _Address, _PduType) when is_atom(Domain) ->
+    ?d("accept_recv -> entry with~n"
+       "   Domain:  ~p~n"
+       "   Address: ~p~n"
+       "   PduType: ~p", [Domain, _Address, _PduType]),
+    true;
+accept_recv_pdu(_Addr, Port, _PduType) when is_integer(Port) ->
+    ?d("accept_recv_pdu -> entry with~n"
+       "   Addr: ~p~n"
+       "   Port: ~p~n"
+       "   PduType: ~p", [_Addr, Port, _PduType]),
     true.
 
 accept_send_pdu(_Targets, _PduType) ->
-    ?d("accept_send_pdu -> entry with"
-       "~n   Targets: ~p"
-       "~n   PduType: ~p", [_Targets, _PduType]),
+    ?d("accept_send_pdu -> entry with~n"
+       "   Targets: ~p~n"
+       "   PduType: ~p", [_Targets, _PduType]),
     true.
 
diff --git a/lib/snmp/src/agent/snmpa_network_interface.erl b/lib/snmp/src/agent/snmpa_network_interface.erl
index 887ea22549..699fbde671 100644
--- a/lib/snmp/src/agent/snmpa_network_interface.erl
+++ b/lib/snmp/src/agent/snmpa_network_interface.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_network_interface_filter.erl b/lib/snmp/src/agent/snmpa_network_interface_filter.erl
index 6fa131beee..1524a6447b 100644
--- a/lib/snmp/src/agent/snmpa_network_interface_filter.erl
+++ b/lib/snmp/src/agent/snmpa_network_interface_filter.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2007-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -23,7 +24,7 @@
 
 
 behaviour_info(callbacks) ->
-    [{accept_recv,     2}, 
+    [{accept_recv,     2},
      {accept_send,     2},
      {accept_recv_pdu, 3},
      {accept_send_pdu, 2}];
@@ -31,20 +32,21 @@ behaviour_info(_) ->
     undefined.
 
 
-%% accept_recv(address(), port()) -> boolean() 
+%% accept_recv({domain(), address()}) -> boolean()
 %% Called at the receiption of a message 
 %% (before *any* processing has been done).
 %% 
-%% accept_send(address(), port()) -> boolean()
+%% accept_send({domain(), address()}) -> boolean()
 %% Called before the sending of a message 
 %% (after *all* processing has been done).
 %% 
-%% accept_recv_pdu(Addr, Port, pdu_type()) -> boolean()
+%% accept_recv_pdu({domain(), address()}, pdu_type()) -> boolean()
 %% Called after the basic message processing (MPD) has been done, 
 %% but before the pdu is handed over to the master-agent for 
 %% primary processing.
 %% 
-%% accept_send_pdu(Targets, pdu_type()) -> boolean() | NewTargets
+%% accept_send_pdu([{domain(), address()}, ...] = Targets, pdu_type()) ->
+%%     boolean() | NewTargets
 %% Called before the basic message processing (MPD) is done, 
 %% when a pdu has been received from the master-agent.
 %% 
diff --git a/lib/snmp/src/agent/snmpa_notification_delivery_info_receiver.erl b/lib/snmp/src/agent/snmpa_notification_delivery_info_receiver.erl
index b9ec5ff05e..aca90baf0e 100644
--- a/lib/snmp/src/agent/snmpa_notification_delivery_info_receiver.erl
+++ b/lib/snmp/src/agent/snmpa_notification_delivery_info_receiver.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2008-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_notification_filter.erl b/lib/snmp/src/agent/snmpa_notification_filter.erl
index 199cf725fd..6300d450c7 100644
--- a/lib/snmp/src/agent/snmpa_notification_filter.erl
+++ b/lib/snmp/src/agent/snmpa_notification_filter.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_set.erl b/lib/snmp/src/agent/snmpa_set.erl
index 0f85d0aaa0..9833d6fdcc 100644
--- a/lib/snmp/src/agent/snmpa_set.erl
+++ b/lib/snmp/src/agent/snmpa_set.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_set_lib.erl b/lib/snmp/src/agent/snmpa_set_lib.erl
index f5218d5409..57507a36e8 100644
--- a/lib/snmp/src/agent/snmpa_set_lib.erl
+++ b/lib/snmp/src/agent/snmpa_set_lib.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_set_mechanism.erl b/lib/snmp/src/agent/snmpa_set_mechanism.erl
index 4561fb035b..2f24f38092 100644
--- a/lib/snmp/src/agent/snmpa_set_mechanism.erl
+++ b/lib/snmp/src/agent/snmpa_set_mechanism.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_supervisor.erl b/lib/snmp/src/agent/snmpa_supervisor.erl
index aebcdbaa84..cdb5ca840d 100644
--- a/lib/snmp/src/agent/snmpa_supervisor.erl
+++ b/lib/snmp/src/agent/snmpa_supervisor.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -356,7 +357,7 @@ init([AgentType, Opts]) ->
     SymStoreSpec = 
 	worker_spec(snmpa_symbolic_store, SymStoreArgs, Restart, 2000),
 
-    LdbArgs = [Prio, DbDir, LdbOpts],
+    LdbArgs = [Prio, DbDir, DbInitError, LdbOpts],
     LocalDbSpec = 
 	worker_spec(snmpa_local_db, LdbArgs, Restart, 5000),
 
diff --git a/lib/snmp/src/agent/snmpa_svbl.erl b/lib/snmp/src/agent/snmpa_svbl.erl
index 9c2910580e..8955bed0f2 100644
--- a/lib/snmp/src/agent/snmpa_svbl.erl
+++ b/lib/snmp/src/agent/snmpa_svbl.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_symbolic_store.erl b/lib/snmp/src/agent/snmpa_symbolic_store.erl
index 00178f4bcd..945a4e9a9c 100644
--- a/lib/snmp/src/agent/snmpa_symbolic_store.erl
+++ b/lib/snmp/src/agent/snmpa_symbolic_store.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -642,10 +643,10 @@ code_change(_Vsn, S, _Extra) ->
     {ok, S}.
 
 
-stop_backup_server(undefined) ->
-    ok;
-stop_backup_server({Pid, _}) when is_pid(Pid) ->
-    exit(Pid, kill).
+%% stop_backup_server(undefined) ->
+%%     ok;
+%% stop_backup_server({Pid, _}) when is_pid(Pid) ->
+%%     exit(Pid, kill).
 
 
     
diff --git a/lib/snmp/src/agent/snmpa_target_cache.erl b/lib/snmp/src/agent/snmpa_target_cache.erl
index 391d711dc5..72caf72b33 100644
--- a/lib/snmp/src/agent/snmpa_target_cache.erl
+++ b/lib/snmp/src/agent/snmpa_target_cache.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/agent/snmpa_trap.erl b/lib/snmp/src/agent/snmpa_trap.erl
index b9a2496341..e75016f7ec 100644
--- a/lib/snmp/src/agent/snmpa_trap.erl
+++ b/lib/snmp/src/agent/snmpa_trap.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
@@ -270,12 +271,13 @@ localise_type({VariableOid, Value}, Mib) when is_list(VariableOid) ->
 localise_type(X, _) -> X.
 
 %%-----------------------------------------------------------------
-%% Func: make_v1_trap_pdu/4
+%% Func: make_v1_trap_pdu/5
 %% Args: Enterprise = oid()
 %%       Specific = integer()
 %%       Varbinds is as returned from initiate_vars
 %%         (but only {Oid, Type[, Value} permitted)
 %%       SysUpTime = integer()
+%%       AgentIp = {A, B, C, D}
 %% Purpose: Make a #trappdu
 %%          Checks the Varbinds to see that no symbolic names are
 %%          present, and that each var has a type. Performs a get
@@ -284,7 +286,7 @@ localise_type(X, _) -> X.
 %% Fails: yes
 %% NOTE: Executed at the MA
 %%-----------------------------------------------------------------
-make_v1_trap_pdu(Enterprise, Specific, VarbindList, SysUpTime) ->
+make_v1_trap_pdu(Enterprise, Specific, VarbindList, SysUpTime, AgentIp) ->
     {Enterp,Generic,Spec} = 
 	case Enterprise of
 	    ?snmp ->
@@ -292,7 +294,6 @@ make_v1_trap_pdu(Enterprise, Specific, VarbindList, SysUpTime) ->
 	    _ ->
 		{Enterprise,?enterpriseSpecific,Specific}
     end,
-    {value, AgentIp} = snmp_framework_mib:intAgentIpAddress(get),
     #trappdu{enterprise    = Enterp,
 	     agent_addr    = AgentIp,
 	     generic_trap  = Generic,
@@ -369,6 +370,7 @@ send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, LocalEngineID,
 		    {tag,  T},
 		    {err,  E},
 		    {stacktrace, erlang:get_stacktrace()}],
+	    ?vlog("snmpa_trap:send_trap exception: ~p", [Info]),
 	    {error, {failed_sending_trap, Info}}
     end.
      
@@ -789,23 +791,19 @@ send_trap_pdus([], ContextName, {TrapRec, Vbs},
 
 send_v1_trap(_TrapRec, [], _Vbs, _ExtraInfo, _NetIf, _SysUpTime) ->
     ok;
-send_v1_trap(#trap{enterpriseoid = Enter, specificcode = Spec},
-	     V1Res, Vbs, ExtraInfo, NetIf, SysUpTime) ->
+send_v1_trap(
+  #trap{enterpriseoid = Enter, specificcode = Spec},
+  V1Res, Vbs, ExtraInfo, NetIf, SysUpTime) ->
     ?vdebug("prepare to send v1 trap "
 	    "~n   '~p'"
 	    "~n   with"
 	    "~n   ~p"
 	    "~n   to"
 	    "~n   ~p", [Enter, Spec, V1Res]),
-    TrapPdu = make_v1_trap_pdu(Enter, Spec, Vbs, SysUpTime),
-    AddrCommunities = mk_addr_communities(V1Res),
-    lists:foreach(fun({Community, Addrs}) ->
-			  ?vtrace("send v1 trap pdu to ~p",[Addrs]),
-			  NetIf ! {send_pdu, 'version-1', TrapPdu,
-				   {community, Community}, Addrs, ExtraInfo}
-		  end, AddrCommunities);
-send_v1_trap(#notification{oid = Oid}, V1Res, Vbs, ExtraInfo, NetIf, 
-	     SysUpTime) ->
+    do_send_v1_trap(Enter, Spec, V1Res, Vbs, ExtraInfo, NetIf, SysUpTime);
+send_v1_trap(
+  #notification{oid = Oid},
+  V1Res, Vbs, ExtraInfo, NetIf, SysUpTime) ->
     %% Use alg. in rfc2089 to map a v2 trap to a v1 trap
     % delete Counter64 objects from vbs
     ?vdebug("prepare to send v1 trap '~p'",[Oid]),
@@ -822,14 +820,38 @@ send_v1_trap(#notification{oid = Oid}, V1Res, Vbs, ExtraInfo, NetIf,
 			{lists:reverse(First),Last}
 		end
 	end,
-    TrapPdu = make_v1_trap_pdu(Enter, Spec, NVbs, SysUpTime),
+    do_send_v1_trap(Enter, Spec, V1Res, NVbs, ExtraInfo, NetIf, SysUpTime).
+
+do_send_v1_trap(Enter, Spec, V1Res, NVbs, ExtraInfo, NetIf, SysUpTime) ->
+    {value, Transports} = snmp_framework_mib:intAgentTransports(get),
+    {_Domain, {AgentIp, _AgentPort}} =
+	case lists:keyfind(snmpUDPDomain, 1, Transports) of
+	    false ->
+		case lists:keyfind(transportDomainUdpIpv4, 1, Transports) of
+		    false ->
+			?vtrace(
+			   "snmpa_trap: can not send v1 trap "
+			   "without IPv4 domain: ~p",
+			   [Transports]),
+			user_err(
+			   "snmpa_trap: can not send v1 trap "
+			   "without IPv4 domain: ~p",
+			   [Transports]);
+		    DomainAddr ->
+			DomainAddr
+		end;
+	    DomainAddr ->
+		DomainAddr
+	end,
+    TrapPdu = make_v1_trap_pdu(Enter, Spec, NVbs, SysUpTime, AgentIp),
     AddrCommunities = mk_addr_communities(V1Res),
-    lists:foreach(fun({Community, Addrs}) ->
-			  ?vtrace("send v1 trap to ~p",[Addrs]),
-			  NetIf ! {send_pdu, 'version-1', TrapPdu,
-				   {community, Community}, Addrs, ExtraInfo}
-		  end, AddrCommunities).
-    
+    lists:foreach(
+      fun ({Community, Addrs}) ->
+	      ?vtrace("send v1 trap to ~p",[Addrs]),
+	      NetIf ! {send_pdu, 'version-1', TrapPdu,
+		       {community, Community}, Addrs, ExtraInfo}
+      end, AddrCommunities).
+
 send_v2_trap(_TrapRec, [], _Vbs, _Recv, _ExtraInfo, _NetIf, _SysUpTime) ->
     ok;
 send_v2_trap(TrapRec, V2Res, Vbs, Recv, ExtraInfo, NetIf, SysUpTime) ->
@@ -1045,7 +1067,7 @@ deliver_recv(#snmpa_notification_delivery_info{tag   = Tag,
 	"~n   DeliveryResult: ~p"
 	"~n   TAddr:          ~p"
 	"", [Tag, Mod, Extra, DeliveryResult, TAddr]),
-    Addr = transform_taddr(TAddr),
+    [Addr] = transform_taddrs([TAddr]),
     (catch Mod:delivery_info(Tag, Addr, DeliveryResult, Extra));
 deliver_recv({Tag, Receiver}, MsgId, Result) ->
     ?vtrace("deliver_recv -> entry with"
@@ -1072,35 +1094,90 @@ deliver_recv(Else, _MsgId, _Result) ->
 	   [Else]),
     user_err("snmpa: bad receiver, ~w\n", [Else]).
 
-transform_taddrs(Addrs) ->
-    [transform_taddr(Addr) || Addr <- Addrs].
+transform_taddrs(TAddrs) ->
+    UseTDomain =
+	case snmp_framework_mib:intAgentTransportDomain(get) of
+	    {value,snmpUDPDomain} ->
+		false;
+	    {value,_} ->
+		true;
+	    genErr ->
+		false
+	end,
+    DomAddrs = [transform_taddr(TAddr) || TAddr <- TAddrs],
+    case UseTDomain of
+	true ->
+	    DomAddrs;
+	false ->
+	    [Addr || {_Domain, Addr} <- DomAddrs]
+    end.
 
-transform_taddr({?snmpUDPDomain, [A1, A2, A3, A4, P1, P2]}) -> % v2
-    Addr = {A1, A2, A3, A4},
+%% v2
+transform_taddr({?snmpUDPDomain, Addr}) ->
+    transform_taddr(transportDomainIdpIpv4, Addr);
+transform_taddr({?transportDomainUdpIpv4, Addr}) ->
+    transform_taddr(transportDomainUdpIpv4, Addr);
+transform_taddr({?transportDomainUdpIpv6, Addr}) ->
+    transform_taddr(transportDomainUdpIpv6, Addr);
+%% v3
+transform_taddr({{?snmpUDPDomain, Addr}, _MsgData}) ->
+    transform_taddr(transportDomainUdpIpv4, Addr);
+transform_taddr({{?transportDomainUdpIpv4, Addr}, _MsgData}) ->
+    transform_taddr(transportDomainUdpIpv4, Addr);
+transform_taddr({{?transportDomainUdpIpv6, Addr}, _MsgData}) ->
+    transform_taddr(transportDomainUdpIpv6, Addr).
+
+transform_taddr(
+  transportDomainUdpIpv4 = Domain,
+  [A1,A2,A3,A4,P1,P2]) ->
+    Ip = {A1, A2, A3, A4},
     Port = P1 bsl 8 + P2,
-    {Addr, Port};
-transform_taddr({?transportDomainUdpIpv4, [A1, A2, A3, A4, P1, P2]}) -> % v2
-    Addr = {A1, A2, A3, A4},
+    {Domain, {Ip, Port}};
+transform_taddr(
+  transportDomainUdpIpv6 = Domain,
+  [A1, A2, A3, A4, A5, A6, A7, A8, P1, P2]) ->
+    Ip = {A1, A2, A3, A4, A5, A6, A7, A8},
     Port = P1 bsl 8 + P2,
-    {Addr, Port};
-transform_taddr({?transportDomainUdpIpv6, 
-		 [A1, A2, A3, A4, A5, A6, A7, A8, P1, P2]}) -> % v2
-    Addr = {A1, A2, A3, A4, A5, A6, A7, A8},
+    {Domain, {Ip, Port}};
+transform_taddr(
+  transportDomainUdpIpv6 = Domain,
+  [A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16,
+   P1, P2]) ->
+    Ip =
+	{(A1 bsl 8) bor A2, (A3 bsl 8) bor A4,
+	 (A5 bsl 8) bor A6, (A7 bsl 8) bor A8,
+	 (A9 bsl 8) bor A10, (A11 bsl 8) bor A12,
+	 (A13 bsl 8) bor A14, (A15 bsl 8) bor A16},
     Port = P1 bsl 8 + P2,
-    {Addr, Port};
-transform_taddr({{?snmpUDPDomain, [A1, A2, A3, A4, P1, P2]}, _MsgData}) -> % v3
-    Addr = {A1, A2, A3, A4},
-    Port = P1 bsl 8 + P2,
-    {Addr, Port};
-transform_taddr({{?transportDomainUdpIpv4, [A1, A2, A3, A4, P1, P2]}, _MsgData}) -> % v3
-    Addr = {A1, A2, A3, A4},
-    Port = P1 bsl 8 + P2,
-    {Addr, Port};
-transform_taddr({{?transportDomainUdpIpv6, 
-		  [A1, A2, A3, A4, A5, A6, A7, A8, P1, P2]}, _MsgData}) -> % v3
-    Addr = {A1, A2, A3, A4, A5, A6, A7, A8},
-    Port = P1 bsl 8 + P2,
-    {Addr, Port}.
+    {Domain, {Ip, Port}}.
+
+%% transform_taddr({?snmpUDPDomain, [A1, A2, A3, A4, P1, P2]}) -> % v2
+%%     Addr = {A1, A2, A3, A4},
+%%     Port = P1 bsl 8 + P2,
+%%     {Addr, Port};
+%% transform_taddr({?transportDomainUdpIpv4, [A1, A2, A3, A4, P1, P2]}) -> % v2
+%%     Addr = {A1, A2, A3, A4},
+%%     Port = P1 bsl 8 + P2,
+%%     {Addr, Port};
+%% transform_taddr({?transportDomainUdpIpv6,
+%% 		 [A1, A2, A3, A4, A5, A6, A7, A8, P1, P2]}) -> % v2
+%%     Addr = {A1, A2, A3, A4, A5, A6, A7, A8},
+%%     Port = P1 bsl 8 + P2,
+%%     {Addr, Port};
+%% transform_taddr({{?snmpUDPDomain, [A1, A2, A3, A4, P1, P2]}, _MsgData}) -> % v3
+%%     Addr = {A1, A2, A3, A4},
+%%     Port = P1 bsl 8 + P2,
+%%     {Addr, Port};
+%% transform_taddr({{?transportDomainUdpIpv4, [A1, A2, A3, A4, P1, P2]}, _MsgData}) -> % v3
+%%     Addr = {A1, A2, A3, A4},
+%%     Port = P1 bsl 8 + P2,
+%%     {Addr, Port};
+%% transform_taddr({{?transportDomainUdpIpv6,
+%% 		  [A1, A2, A3, A4, A5, A6, A7, A8, P1, P2]}, _MsgData}) -> % v3
+%%     Addr = {A1, A2, A3, A4, A5, A6, A7, A8},
+%%     Port = P1 bsl 8 + P2,
+%%     {Addr, Port}.
+
 
 
 check_all_varbinds(#notification{oid = Oid}, Vbs, MibView) ->
diff --git a/lib/snmp/src/agent/snmpa_usm.erl b/lib/snmp/src/agent/snmpa_usm.erl
index 6f54307f9f..fb616cd9ef 100644
--- a/lib/snmp/src/agent/snmpa_usm.erl
+++ b/lib/snmp/src/agent/snmpa_usm.erl
@@ -1,21 +1,25 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1999-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2015. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %%
+%% AES: RFC 3826
+%% 
+
 -module(snmpa_usm).
 
 %% Avoid warning for local function error/1 clashing with autoimported BIF.
@@ -642,8 +646,9 @@ get_des_salt() ->
 		ets:insert(snmp_agent_table, {usm_des_salt, 0}),
 		0;
 	    _ -> % it doesn't exist, initialize
-		{A1,A2,A3} = erlang:now(),
-		random:seed(A1,A2,A3),
+                random:seed(erlang:phash2([node()]),
+                            erlang:monotonic_time(),
+                            erlang:unique_integer()),
 		R = random:uniform(4294967295),
 		ets:insert(snmp_agent_table, {usm_des_salt, R}),
 		R
@@ -652,7 +657,10 @@ get_des_salt() ->
     [?i32(EngineBoots), ?i32(SaltInt)].
 
 aes_encrypt(PrivKey, Data) ->
-    snmp_usm:aes_encrypt(PrivKey, Data, fun get_aes_salt/0).
+    EngineBoots = snmp_framework_mib:get_engine_boots(),
+    EngineTime  = snmp_framework_mib:get_engine_time(),
+    snmp_usm:aes_encrypt(PrivKey, Data, fun get_aes_salt/0, 
+			 EngineBoots, EngineTime).
 
 aes_decrypt(PrivKey, UsmSecParams, EncData) ->
     #usmSecurityParameters{msgPrivacyParameters        = PrivParams,
@@ -671,8 +679,9 @@ get_aes_salt() ->
 		ets:insert(snmp_agent_table, {usm_aes_salt, 0}),
 		0;
 	    _ -> % it doesn't exist, initialize
-		{A1,A2,A3} = erlang:now(),
-		random:seed(A1,A2,A3),
+                random:seed(erlang:phash2([node()]),
+                            erlang:monotonic_time(),
+                            erlang:unique_integer()),
 		R = random:uniform(36893488147419103231),
 		ets:insert(snmp_agent_table, {usm_aes_salt, R}),
 		R
diff --git a/lib/snmp/src/agent/snmpa_vacm.erl b/lib/snmp/src/agent/snmpa_vacm.erl
index dadcf32543..f9df52010b 100644
--- a/lib/snmp/src/agent/snmpa_vacm.erl
+++ b/lib/snmp/src/agent/snmpa_vacm.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2015. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -305,8 +306,8 @@ dump_table() ->
 %% time dumping the table.
 unique_table_name(Pre) ->
     %% We want something that is guaranteed to be unique, 
-    %% therefor we use erlang:now() instead of os:timestamp()
-    unique_table_name(Pre, erlang:now()).
+    %% therefor we use erlang:timestamp() instead of os:timestamp()
+    unique_table_name(Pre, erlang:timestamp()).
 
 unique_table_name(Pre, {_A, _B, C} = Now) ->
     {Date, Time}     = calendar:now_to_datetime(Now),
@@ -445,6 +446,3 @@ gc_tab(Oid) ->
 
 user_err(F, A) ->
     snmpa_error:user_err(F, A).
-
-% config_err(F, A) ->
-%     snmpa_error:config_err(F, A).
diff --git a/lib/snmp/src/agent/snmpa_vacm.hrl b/lib/snmp/src/agent/snmpa_vacm.hrl
index 681591d212..527298e499 100644
--- a/lib/snmp/src/agent/snmpa_vacm.hrl
+++ b/lib/snmp/src/agent/snmpa_vacm.hrl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/app/Makefile b/lib/snmp/src/app/Makefile
index 716add8b9e..6f2b8a4077 100644
--- a/lib/snmp/src/app/Makefile
+++ b/lib/snmp/src/app/Makefile
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2003-2012. All Rights Reserved.
+# Copyright Ericsson AB 2003-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
@@ -79,6 +80,8 @@ endif
 # FLAGS
 # ----------------------------------------------------
 
+ERL_COMPILE_FLAGS += -pa $(ERL_TOP)/lib/snmp/ebin
+
 ifeq ($(WARN_UNUSED_VARS),true)
 ERL_COMPILE_FLAGS += +warn_unused_vars
 endif
diff --git a/lib/snmp/src/app/depend.mk b/lib/snmp/src/app/depend.mk
index 1080cb5693..bf213c2aec 100644
--- a/lib/snmp/src/app/depend.mk
+++ b/lib/snmp/src/app/depend.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2009. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/app/modules.mk b/lib/snmp/src/app/modules.mk
index 678f15de5c..2bfd2d5c56 100644
--- a/lib/snmp/src/app/modules.mk
+++ b/lib/snmp/src/app/modules.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2009. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/app/snmp.app.src b/lib/snmp/src/app/snmp.app.src
index 904d17954b..b593e9ea84 100644
--- a/lib/snmp/src/app/snmp.app.src
+++ b/lib/snmp/src/app/snmp.app.src
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2015. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -136,4 +137,6 @@
   %% configuration and use), and in that case mnesia must also be started,
   %% before snmp.
   {applications, [kernel, stdlib]},
-  {mod, {snmp_app, []}}]}.
+  {mod, {snmp_app, []}},
+  {runtime_dependencies, ["stdlib-2.5","runtime_tools-1.8.14","mnesia-4.12",
+			  "kernel-3.0","erts-6.0","crypto-3.3"]}]}.
diff --git a/lib/snmp/src/app/snmp.appup.src b/lib/snmp/src/app/snmp.appup.src
index 7ffa4a725d..ca61782639 100644
--- a/lib/snmp/src/app/snmp.appup.src
+++ b/lib/snmp/src/app/snmp.appup.src
@@ -1,37 +1,24 @@
-%%
-%% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
-%% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
-%% 
-%% %CopyrightEnd%
-%%
-
+%% -*- erlang -*-
 {"%VSN%",
 
 %% ----- U p g r a d e -------------------------------------------------------
-
+%% Instruction examples: 
+%% {restart_application, snmp}
+%% {load_module, snmp_pdus, soft_purge, soft_purge, []}
+%% {update, snmpa_local_db, soft, soft_purge, soft_purge, []}
+%% {add_module,  snmpm_net_if_mt}
  [
-  {"4.23.1", [{restart_application, snmp}]}, 
-  {"4.23",   [{restart_application, snmp}]}
- ], 
-
+  {<<"5\\..*">>, [{restart_application, snmp}]},	
+  {<<"4\\..*">>, [{restart_application, snmp}]}
+ ],
+ 
 %% ------D o w n g r a d e ---------------------------------------------------
-
+%% Instruction examples: 
+%% {remove, {snmpm_net_if_mt, soft_purge, soft_purge}}
+ 
  [
-  {"4.23.1", [{restart_application, snmp}]}, 
-  {"4.23",   [{restart_application, snmp}]}
- ]
-
-}.
+  {<<"5\\..*">>, [{restart_application, snmp}]},	
+  {<<"4\\..*">>, [{restart_application, snmp}]}
+ ]  	       
+}.	 
 
diff --git a/lib/snmp/src/app/snmp.erl b/lib/snmp/src/app/snmp.erl
index 1bb562654a..df3933ea01 100644
--- a/lib/snmp/src/app/snmp.erl
+++ b/lib/snmp/src/app/snmp.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -49,8 +50,8 @@
 
 	 read_mib/1, 
  
-	 log_to_txt/5, log_to_txt/6, log_to_txt/7,
-	 log_to_io/4,  log_to_io/5,  log_to_io/6,
+	 log_to_txt/5, log_to_txt/6, log_to_txt/7, log_to_txt/8, 
+	 log_to_io/4,  log_to_io/5,  log_to_io/6,  log_to_io/7, 
 	 change_log_size/2,
 
 	 octet_string_to_bits/1, bits_to_octet_string/1, 
@@ -91,7 +92,31 @@
 	]).
 
 -export_type([
+	      dir/0, 
+	      snmp_timer/0, 
+
+	      engine_id/0, 
+	      tdomain/0, 
+	      community/0, 
+	      mms/0, 
+	      version/0, 
+	      sec_model/0, 
+	      sec_name/0, 
+	      sec_level/0, 
+
 	      oid/0,
+	      varbind/0, 
+	      ivarbind/0, 
+	      asn1_type/0, 
+	      table_info/0, 
+	      variable_info/0, 
+	      me/0, 
+	      trap/0, 
+	      notification/0, 
+	      pdu/0, 
+	      trappdu/0, 
+	      mib/0, 
+	      mib_name/0, 
  
 	      void/0
 	     ]).
@@ -148,15 +173,42 @@
  
 
 -define(APPLICATION, snmp).
+-define(ATL_BLOCK_DEFAULT, true).
 
+-include_lib("snmp/include/snmp_types.hrl").
 
 
 %%-----------------------------------------------------------------
 %% Types
 %%-----------------------------------------------------------------
 
--type oid()  :: [non_neg_integer()].
--type void() :: term().
+-type dir()           :: string().
+-type snmp_timer()    :: #snmp_incr_timer{}.
+
+-type engine_id()     :: string().
+-type tdomain()       :: transportDomainUdpIpv4 | transportDomainUdpIpv6.
+-type community()     :: string().
+-type mms()           :: non_neg_integer().
+-type version()       :: v1 | v2 | v3.
+-type sec_model()     :: any | v1 | v2c | usm.
+-type sec_name()      :: string().
+-type sec_level()     :: noAuthNoPriv | authNoPriv | authPriv.
+
+-type oid()           :: [non_neg_integer()].
+-type varbind()       :: #varbind{}.
+-type ivarbind()      :: #ivarbind{}.
+-type asn1_type()     :: #asn1_type{}.
+-type table_info()    :: #table_info{}.
+-type variable_info() :: #variable_info{}.
+-type me()            :: #me{}.
+-type trap()          :: #trap{}.
+-type notification()  :: #notification{}.
+-type mib()           :: #mib{}.
+-type mib_name()      :: string().
+-type pdu()           :: #pdu{}.
+-type trappdu()       :: #trappdu{}.
+
+-type void()          :: term().
 
 
 %%-----------------------------------------------------------------
@@ -854,18 +906,60 @@ read_mib(FileName) ->
 %%%-----------------------------------------------------------------
 
 log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile) -> 
-    snmp_log:log_to_txt(LogName, LogFile, LogDir, Mibs, OutFile).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    Start = null, 
+    Stop  = null, 
+    log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop).
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    Start = null, 
+    Stop  = null, 
+    log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop);
 log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start) -> 
-    snmp_log:log_to_txt(LogName, LogFile, LogDir, Mibs, OutFile, Start).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    Stop  = null, 
+    log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop).
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    Stop  = null, 
+    log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop);
 log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop) -> 
-    snmp_log:log_to_txt(LogName, LogFile, LogDir, Mibs, OutFile, Start, Stop).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop).
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop) -> 
+    snmp_log:log_to_txt(LogName, Block, LogFile, LogDir, Mibs, OutFile, 
+			Start, Stop).
+
 
 log_to_io(LogDir, Mibs, LogName, LogFile) -> 
-    snmp_log:log_to_io(LogName, LogFile, LogDir, Mibs).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    Start = null, 
+    Stop  = null, 
+    log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop).
+
+log_to_io(LogDir, Mibs, LogName, LogFile, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    Start = null, 
+    Stop  = null, 
+    log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop);
 log_to_io(LogDir, Mibs, LogName, LogFile, Start) -> 
-    snmp_log:log_to_io(LogName, LogFile, LogDir, Mibs, Start).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    Stop  = null, 
+    log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop).
+
+log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    Stop  = null, 
+    log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop);
 log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop) -> 
-    snmp_log:log_to_io(LogName, LogFile, LogDir, Mibs, Start, Stop).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop).
+
+log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop) -> 
+    snmp_log:log_to_io(LogName, Block, LogFile, LogDir, Mibs, Start, Stop).
 
 change_log_size(LogName, NewSize) -> 
     snmp_log:change_size(LogName, NewSize).
@@ -878,12 +972,12 @@ change_log_size(LogName, NewSize) ->
 %% Usage: erl -s snmp str_apply '{Mod,Func,ArgList}'
 str_apply([Atom]) ->
     Str = atom_to_list(Atom),
-    {Mod,Func,Args} = to_erlang_term(Str),
-    apply(Mod,Func,Args).
+    {Mod, Func, Args} = to_erlang_term(Str),
+    apply(Mod, Func, Args).
 
 to_erlang_term(String) ->
     {ok, Tokens, _} = erl_scan:string(lists:append([String, ". "])),
-    {ok,Term} = erl_parse:parse_term(Tokens),
+    {ok, Term}      = erl_parse:parse_term(Tokens),
     Term.
 
 
diff --git a/lib/snmp/src/app/snmp_app.erl b/lib/snmp/src/app/snmp_app.erl
index 28a6fef7e9..dbc1ec0b6d 100644
--- a/lib/snmp/src/app/snmp_app.erl
+++ b/lib/snmp/src/app/snmp_app.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2003-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2003-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/app/snmp_app_sup.erl b/lib/snmp/src/app/snmp_app_sup.erl
index d0c190b51f..eb89cc5b6d 100644
--- a/lib/snmp/src/app/snmp_app_sup.erl
+++ b/lib/snmp/src/app/snmp_app_sup.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2003-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2003-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/app/snmp_internal.hrl b/lib/snmp/src/app/snmp_internal.hrl
index 5ff715e0b7..374767df15 100644
--- a/lib/snmp/src/app/snmp_internal.hrl
+++ b/lib/snmp/src/app/snmp_internal.hrl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -24,6 +25,8 @@
 -define(APPLICATION, snmp).
 -endif.
 
+-define(STACK(), erlang:get_stacktrace()).
+
 -define(snmp_info(C, F, A),    ?snmp_msg(info_msg, C, F, A)).
 -define(snmp_warning(C, F, A), ?snmp_msg(warning_msg, C, F, A)).
 -define(snmp_error(C, F, A),   ?snmp_msg(error_msg, C, F, A)).
diff --git a/lib/snmp/src/compile/Makefile b/lib/snmp/src/compile/Makefile
index f63fc18997..4093ffa9ca 100644
--- a/lib/snmp/src/compile/Makefile
+++ b/lib/snmp/src/compile/Makefile
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 1997-2012. All Rights Reserved.
+# Copyright Ericsson AB 1997-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/compile/depend.mk b/lib/snmp/src/compile/depend.mk
index 2f8a07aba7..57b7c19daf 100644
--- a/lib/snmp/src/compile/depend.mk
+++ b/lib/snmp/src/compile/depend.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2013. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/compile/modules.mk b/lib/snmp/src/compile/modules.mk
index 399e4f865e..9ca5ebb95a 100644
--- a/lib/snmp/src/compile/modules.mk
+++ b/lib/snmp/src/compile/modules.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2011. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/compile/snmpc.erl b/lib/snmp/src/compile/snmpc.erl
index 2f065dddac..db1f9ee61b 100644
--- a/lib/snmp/src/compile/snmpc.erl
+++ b/lib/snmp/src/compile/snmpc.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2015. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
@@ -409,8 +410,9 @@ get_verbosity(Options) ->
 %%----------------------------------------------------------------------
 
 init(From, MibFileName, Options) ->
-    {A,B,C} = now(),
-    random:seed(A,B,C),
+    random:seed(erlang:phash2([node()]),
+                erlang:monotonic_time(),
+                erlang:unique_integer()),
     put(options,            Options),
     put(verbosity,          get_verbosity(Options)),
     put(description,        get_description(Options)),
diff --git a/lib/snmp/src/compile/snmpc.hrl b/lib/snmp/src/compile/snmpc.hrl
index 1c0808d065..b3c66f4f3d 100644
--- a/lib/snmp/src/compile/snmpc.hrl
+++ b/lib/snmp/src/compile/snmpc.hrl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/compile/snmpc.src b/lib/snmp/src/compile/snmpc.src
index 6eb95be35e..e64b6607c4 100644
--- a/lib/snmp/src/compile/snmpc.src
+++ b/lib/snmp/src/compile/snmpc.src
@@ -3,18 +3,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2008-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2008-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/compile/snmpc_lib.erl b/lib/snmp/src/compile/snmpc_lib.erl
index 5a661cf194..51690b6e7e 100644
--- a/lib/snmp/src/compile/snmpc_lib.erl
+++ b/lib/snmp/src/compile/snmpc_lib.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
@@ -139,6 +140,7 @@ allow_size_rfc1902('Integer32') -> true;
 allow_size_rfc1902('Unsigned32') -> true;
 allow_size_rfc1902('OCTET STRING') -> true;
 allow_size_rfc1902('Gauge32') -> true;
+allow_size_rfc1902('Opaque') -> true;
 allow_size_rfc1902(_) -> false.
 
 guess_integer_type() ->
diff --git a/lib/snmp/src/compile/snmpc_lib.hrl b/lib/snmp/src/compile/snmpc_lib.hrl
index 35ec9abd03..8d76817cec 100644
--- a/lib/snmp/src/compile/snmpc_lib.hrl
+++ b/lib/snmp/src/compile/snmpc_lib.hrl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2009-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/compile/snmpc_mib_gram.yrl b/lib/snmp/src/compile/snmpc_mib_gram.yrl
index 4fd504e34b..743c3a6550 100644
--- a/lib/snmp/src/compile/snmpc_mib_gram.yrl
+++ b/lib/snmp/src/compile/snmpc_mib_gram.yrl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/compile/snmpc_mib_to_hrl.erl b/lib/snmp/src/compile/snmpc_mib_to_hrl.erl
index e8c46a0521..bc18afbdc9 100644
--- a/lib/snmp/src/compile/snmpc_mib_to_hrl.erl
+++ b/lib/snmp/src/compile/snmpc_mib_to_hrl.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/compile/snmpc_misc.erl b/lib/snmp/src/compile/snmpc_misc.erl
index 557f3e0f6b..933d629746 100644
--- a/lib/snmp/src/compile/snmpc_misc.erl
+++ b/lib/snmp/src/compile/snmpc_misc.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2003-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2003-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/compile/snmpc_misc.hrl b/lib/snmp/src/compile/snmpc_misc.hrl
index c29f2eb9e5..2df6d1863d 100644
--- a/lib/snmp/src/compile/snmpc_misc.hrl
+++ b/lib/snmp/src/compile/snmpc_misc.hrl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/compile/snmpc_tok.erl b/lib/snmp/src/compile/snmpc_tok.erl
index e238b256d0..9114cc90de 100644
--- a/lib/snmp/src/compile/snmpc_tok.erl
+++ b/lib/snmp/src/compile/snmpc_tok.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/manager/Makefile b/lib/snmp/src/manager/Makefile
index c76dbacf90..0cc87492f1 100644
--- a/lib/snmp/src/manager/Makefile
+++ b/lib/snmp/src/manager/Makefile
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2012. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/manager/depend.mk b/lib/snmp/src/manager/depend.mk
index 2e7783c8ed..7d8f81f55a 100644
--- a/lib/snmp/src/manager/depend.mk
+++ b/lib/snmp/src/manager/depend.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2012. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
@@ -50,10 +51,11 @@ $(EBIN)/snmpm_net_if.$(EMULATOR): \
 	snmpm_network_interface.erl
 
 $(EBIN)/snmpm_net_if_mt.$(EMULATOR): \
+	snmpm_net_if_mt.erl \
 	../../include/snmp_types.hrl \
 	../misc/snmp_debug.hrl \
 	../misc/snmp_verbosity.hrl \
-	snmpm_net_if_mt.erl \
+	snmpm_net_if.erl \
 	snmpm_network_interface.erl
 
 $(EBIN)/snmpm_server.$(EMULATOR): \
diff --git a/lib/snmp/src/manager/modules.mk b/lib/snmp/src/manager/modules.mk
index d46545ea3f..ea9b52d653 100644
--- a/lib/snmp/src/manager/modules.mk
+++ b/lib/snmp/src/manager/modules.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2012. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/manager/snmpm.erl b/lib/snmp/src/manager/snmpm.erl
index 6ac0115dad..cf8c95d69f 100644
--- a/lib/snmp/src/manager/snmpm.erl
+++ b/lib/snmp/src/manager/snmpm.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -75,11 +76,10 @@
 
 	 %% 
 	 %% Logging
-	 log_to_txt/1, 
-	 log_to_txt/2, log_to_txt/3, log_to_txt/4,
-	 log_to_txt/5, log_to_txt/6, log_to_txt/7, 
-	 log_to_io/1,  log_to_io/2,  log_to_io/3,
-	 log_to_io/4,  log_to_io/5,  log_to_io/6, 
+	 log_to_txt/1, log_to_txt/2, log_to_txt/3, log_to_txt/4, 
+	 log_to_txt/5, log_to_txt/6, log_to_txt/7, log_to_txt/8, 
+	 log_to_io/1,  log_to_io/2,  log_to_io/3,  log_to_io/4, 
+	 log_to_io/5,  log_to_io/6,  log_to_io/7, 
 	 change_log_size/1,
 	 get_log_type/0,
 	 set_log_type/1,
@@ -111,6 +111,12 @@
 -export([start_link/3, snmpm_start_verify/2, snmpm_start_verify/3]).
 -export([target_name/1, target_name/2]).
 
+-export_type([
+	      register_timeout/0, 
+	      agent_config/0, 
+	      target_name/0
+	     ]).
+
 
 -include_lib("snmp/src/misc/snmp_debug.hrl").
 -include_lib("snmp/include/snmp_types.hrl").
@@ -119,6 +125,26 @@
 -include("snmp_verbosity.hrl").
 
 -define(DEFAULT_AGENT_PORT, 161).
+-define(ATL_BLOCK_DEFAULT,  true).
+
+
+%%-----------------------------------------------------------------
+%% Types
+%%-----------------------------------------------------------------
+
+-type register_timeout() :: pos_integer() | snmp:snmp_timer().
+-type agent_config() :: {engine_id,        snmp:engine_id()}   | % Mandatory
+			{address,          inet:ip_address()}  | % Mandatory
+			{port,             inet:port_number()} | % Optional
+			{tdomain,          snmp:tdomain()}     | % Optional
+			{community,        snmp:community()}   | % Optional
+			{timeout,          register_timeout()} | % Optional
+			{max_message_size, snmp:mms()}         | % Optional
+			{version,          snmp:version()}     | % Optional
+			{sec_moduel,       snmp:sec_model()}   | % Optional
+			{sec_name,         snmp:sec_name()}    | % Optional
+			{sec_level,        snmp:sec_level()}.    % Optional
+-type target_name() :: string().
 
 
 %% This function is called when the snmp application
@@ -354,21 +380,33 @@ register_agent(UserId, Addr) ->
     register_agent(UserId, Addr, ?DEFAULT_AGENT_PORT, []).
 
 %% Backward compatibility 
-register_agent(UserId, Addr, Port, Config0) ->
+register_agent(UserId, Domain, Addr, Config0) when is_atom(Domain) ->
     case lists:keymember(target_name, 1, Config0) of
 	false ->
-	    TargetName = mk_target_name(Addr, Port, Config0), 
-	    Config     = [{reg_type, addr_port}, 
-			  {address, Addr}, {port, Port} | Config0], 
+	    TargetName = mk_target_name(Domain, Addr, Config0),
+	    Config =
+		[{reg_type, addr_port},
+		 {tdomain, Domain}, {taddress, Addr} | Config0],
 	    do_register_agent(UserId, TargetName, ensure_engine_id(Config));
 	true ->
 	    {value, {_, TargetName}} = 
 		lists:keysearch(target_name, 1, Config0),
 	    Config1 = lists:keydelete(target_name, 1, Config0),
-	    Config2 = [{reg_type, addr_port}, 
-		       {address, Addr}, {port, Port} | Config1], 
+	    Config2 =
+		[{reg_type, addr_port},
+		 {tdomain, Domain}, {taddress, Addr} | Config1],
 	    register_agent(UserId, TargetName, ensure_engine_id(Config2))
-    end.
+    end;
+register_agent(UserId, Ip, Port, Config) when is_integer(Port) ->
+    Domain = snmpm_config:default_transport_domain(),
+    Addr =
+	case snmp_conf:check_address(Domain, {Ip, Port}) of
+	    ok ->
+		{Ip, Port};
+	    {ok, FixedAddr} ->
+		FixedAddr
+	end,
+    register_agent(UserId, Domain, Addr, Config).
 
 unregister_agent(UserId, TargetName) when is_list(TargetName) ->
     snmpm_config:unregister_agent(UserId, TargetName);
@@ -377,8 +415,8 @@ unregister_agent(UserId, TargetName) when is_list(TargetName) ->
 unregister_agent(UserId, Addr) ->
     unregister_agent(UserId, Addr, ?DEFAULT_AGENT_PORT).
 
-unregister_agent(UserId, Addr, Port) ->
-    case target_name(Addr, Port) of
+unregister_agent(UserId, DomainIp, AddressPort) ->
+    case target_name(DomainIp, AddressPort) of
 	{ok, TargetName} ->
 	    unregister_agent(UserId, TargetName);
 	Error ->
@@ -483,7 +521,7 @@ sync_get(UserId, TargetName, Context, Oids, Timeout, ExtraInfo) ->
 
 
 
-%% --- asynchroneous get-request ---
+%% --- asynchronous get-request ---
 %% 
 %% The reply will be delivered to the user
 %% through a call to handle_pdu/5
@@ -551,7 +589,7 @@ sync_get_next(UserId, TargetName, Context, Oids, Timeout, ExtraInfo) ->
 %% </BACKWARD-COMPAT>
 
 
-%% --- asynchroneous get_next-request ---
+%% --- asynchronous get_next-request ---
 %% 
 
 async_get_next2(UserId, TargetName, Oids) ->
@@ -617,7 +655,7 @@ sync_set(UserId, TargetName, Context, VarsAndVals, Timeout, ExtraInfo) ->
 %% </BACKWARD-COMPAT>
 
 
-%% --- asynchroneous set-request --- 
+%% --- asynchronous set-request ---
 %% 
 
 async_set2(UserId, TargetName, VarsAndVals) ->
@@ -709,7 +747,7 @@ sync_get_bulk(UserId, TargetName, NonRep, MaxRep, Context, Oids, Timeout,
 %% </BACKWARD-COMPAT>
 
 
-%% --- asynchroneous get-bulk ---
+%% --- asynchronous get-bulk ---
 %% 
 
 async_get_bulk2(UserId, TargetName, NonRep, MaxRep, Oids) ->
@@ -762,43 +800,204 @@ cancel_async_request(UserId, ReqId) ->
 %%% Audit Trail Log functions (for backward compatibility)
 %%%-----------------------------------------------------------------
 
+-spec log_to_txt(LogDir :: snmp:dir()) ->
+    snmp:void().
+
 log_to_txt(LogDir) ->
     log_to_txt(LogDir, []). 
+
+-spec log_to_txt(LogDir :: snmp:dir(), 
+		 Block  :: boolean()) ->
+    snmp:void();
+                (LogDir :: snmp:dir(), 
+		 Mibs   :: [snmp:mib_name()]) ->
+    snmp:void().
+
+log_to_txt(LogDir, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) ->
+    Mibs    = [], 
+    OutFile = "snmpm_log.txt",       
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block);
 log_to_txt(LogDir, Mibs) ->
+    Block   = ?ATL_BLOCK_DEFAULT, 
     OutFile = "snmpm_log.txt",       
     LogName = ?audit_trail_log_name, 
     LogFile = ?audit_trail_log_file, 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block).
+
+-spec log_to_txt(LogDir :: snmp:dir(), 
+		 Mibs   :: [snmp:mib_name()], 
+		 Block  :: boolean()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, Block)  
+  when ((Block =:= true) orelse (Block =:= false)) ->
+    OutFile = "snmpm_log.txt",       
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block);
 log_to_txt(LogDir, Mibs, OutFile) ->
+    Block   = ?ATL_BLOCK_DEFAULT, 
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 Block   :: boolean()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, Block)  
+  when ((Block =:= true) orelse (Block =:= false)) ->
     LogName = ?audit_trail_log_name, 
     LogFile = ?audit_trail_log_file, 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block); 
 log_to_txt(LogDir, Mibs, OutFile, LogName) ->
+    Block   = ?ATL_BLOCK_DEFAULT, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 Block   :: boolean()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, Block)  
+  when ((Block =:= true) orelse (Block =:= false)) -> 
     LogFile = ?audit_trail_log_file, 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block);
 log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile) -> 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Block   :: boolean()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Start   :: snmp_log:log_time()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block)  
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block);
 log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start) -> 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Block   :: boolean(), 
+		 Start   :: snmp_log:log_time()) ->
+    snmp:void();
+                (LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Start   :: snmp_log:log_time(), 
+		 Stop    :: snmp_log:log_time()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start)  
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start);
 log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop) -> 
-    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop).
+
+-spec log_to_txt(LogDir  :: snmp:dir(), 
+		 Mibs    :: [snmp:mib_name()], 
+		 OutFile :: file:filename(), 
+		 LogName :: string(), 
+		 LogFile :: string(), 
+		 Block   :: boolean(), 
+		 Start   :: snmp_log:log_time(), 
+		 Stop    :: snmp_log:log_time()) ->
+    snmp:void().
+
+log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop) -> 
+    snmp:log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop).
 
 
 log_to_io(LogDir) ->
     log_to_io(LogDir, []).
+
+log_to_io(LogDir, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) ->
+    Mibs    = [], 
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block);
 log_to_io(LogDir, Mibs) ->
     LogName = ?audit_trail_log_name, 
     LogFile = ?audit_trail_log_file, 
     snmp:log_to_io(LogDir, Mibs, LogName, LogFile).
+
+log_to_io(LogDir, Mibs, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) ->
+    LogName = ?audit_trail_log_name, 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block);
 log_to_io(LogDir, Mibs, LogName) ->
+    Block   = ?ATL_BLOCK_DEFAULT, 
     LogFile = ?audit_trail_log_file, 
-    snmp:log_to_io(LogDir, Mibs, LogName, LogFile).
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block).
+
+log_to_io(LogDir, Mibs, LogName, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    LogFile = ?audit_trail_log_file, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block);
 log_to_io(LogDir, Mibs, LogName, LogFile) -> 
-    snmp:log_to_io(LogDir, Mibs, LogName, LogFile).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block).
+
+log_to_io(LogDir, Mibs, LogName, LogFile, Block) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block);
 log_to_io(LogDir, Mibs, LogName, LogFile, Start) -> 
-    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Start).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start).
+
+log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start) 
+  when ((Block =:= true) orelse (Block =:= false)) -> 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start); 
 log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop) -> 
-    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop).
+    Block = ?ATL_BLOCK_DEFAULT, 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop).
+
+log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop) -> 
+    snmp:log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop).
     
 
 change_log_size(NewSize) ->
@@ -1078,14 +1277,17 @@ format_vb_value(Prefix, _Type, Val) ->
 %% --- Internal utility functions ---
 %% 
 
-target_name(Addr) ->
-    target_name(Addr, ?DEFAULT_AGENT_PORT).
+target_name(Ip) ->
+    target_name(Ip, ?DEFAULT_AGENT_PORT).
 
-target_name(Addr, Port) ->
-    snmpm_config:agent_info(Addr, Port, target_name).
+target_name(DomainIp, AddressPort) ->
+    snmpm_config:agent_info(DomainIp, AddressPort, target_name).
 
 mk_target_name(Addr, Port, Config) ->
-    snmpm_config:mk_target_name(Addr, Port, Config).
+    R = snmpm_config:mk_target_name(Addr, Port, Config),
+    p(?MODULE_STRING":mk_target_name(~p, ~p, ~p) -> ~p.~n",
+      [Addr, Port, Config, R]),
+    R.
 
 ensure_engine_id(Config) ->
     case lists:keymember(engine_id, 1, Config) of
@@ -1101,5 +1303,5 @@ ensure_engine_id(Config) ->
 %% p(F) ->
 %%     p(F, []).
 
-%% p(F, A) ->
-%%     io:format("~w:" ++ F ++ "~n", [?MODULE | A]).
+p(F, A) ->
+    io:format("~w:" ++ F ++ "~n", [?MODULE | A]).
diff --git a/lib/snmp/src/manager/snmpm_atl.hrl b/lib/snmp/src/manager/snmpm_atl.hrl
index d99ee05ae6..988b75d9bd 100644
--- a/lib/snmp/src/manager/snmpm_atl.hrl
+++ b/lib/snmp/src/manager/snmpm_atl.hrl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/manager/snmpm_conf.erl b/lib/snmp/src/manager/snmpm_conf.erl
index 03dbd028f7..0421f49c88 100644
--- a/lib/snmp/src/manager/snmpm_conf.erl
+++ b/lib/snmp/src/manager/snmpm_conf.erl
@@ -1,19 +1,19 @@
-%% -*- coding: utf-8 -*-
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -79,42 +79,25 @@ write_manager_config(Dir, Conf) ->
     Hdr = header() ++ Comment,
     write_manager_config(Dir, Hdr, Conf).
 
-write_manager_config(Dir, Hdr, Conf) 
-  when is_list(Dir) andalso is_list(Hdr) andalso is_list(Conf) ->
-    Verify = fun()    -> verify_manager_conf(Conf)           end,
-    Write  = fun(Fid) -> write_manager_conf(Fid, Hdr, Conf)  end,
-    write_config_file(Dir, ?MANAGER_CONF_FILE, Verify, Write).
-    
+write_manager_config(Dir, Hdr, Conf)
+  when is_list(Dir), is_list(Hdr), is_list(Conf) ->
+    Order = fun snmpm_config:order_manager_config/2,
+    Check = fun snmpm_config:check_manager_config/2,
+    Write = fun (Fd, Entries) -> write_manager_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, ?MANAGER_CONF_FILE, Order, Check, Write, Conf).
 
 append_manager_config(Dir, Conf) 
-  when is_list(Dir) andalso is_list(Conf) ->
-    Verify = fun()    -> verify_manager_conf(Conf)     end,
-    Write  = fun(Fid) -> write_manager_conf(Fid, Conf) end,
-    append_config_file(Dir, ?MANAGER_CONF_FILE, Verify, Write).
-    
-
-read_manager_config(Dir) ->
-    Verify = fun(Entry) -> verify_manager_conf_entry(Entry) end,
-    read_config_file(Dir, ?MANAGER_CONF_FILE, Verify).
+  when is_list(Dir), is_list(Conf) ->
+    Order = fun snmpm_config:order_manager_config/2,
+    Check = fun snmpm_config:check_manager_config/2,
+    Write = fun write_manager_conf/2,
+    append_config_file(Dir, ?MANAGER_CONF_FILE, Order, Check, Write, Conf).
 
+read_manager_config(Dir) when is_list(Dir) ->
+    Order = fun snmpm_config:order_manager_config/2,
+    Check = fun snmpm_config:check_manager_config/2,
+    read_config_file(Dir, ?MANAGER_CONF_FILE, Order, Check).
 
-verify_manager_conf([]) ->
-    ok;
-verify_manager_conf([H|T]) ->
-    verify_manager_conf_entry(H),
-    verify_manager_conf(T);
-verify_manager_conf(X) ->
-    error({bad_manager_config, X}).
-
-verify_manager_conf_entry(Entry) ->
-    case snmpm_config:check_manager_config(Entry) of
-        ok ->
-            ok;
-%%         {ok, _} ->
-%%             ok;
-	Error ->
-	    throw(Error)
-    end.
 
 write_manager_conf(Fd, "", Conf) ->
     write_manager_conf(Fd, Conf);
@@ -128,14 +111,16 @@ write_manager_conf(Fd, [H|T]) ->
     do_write_manager_conf(Fd, H),
     write_manager_conf(Fd, T).
 
-do_write_manager_conf(Fd, {address = Tag, Val}) ->
+do_write_manager_conf(Fd, {Tag, Val})
+  when Tag =:= domain;
+       Tag =:= address;
+       Tag =:= port;
+       Tag =:= transports;
+       Tag =:= max_message_size ->
     io:format(Fd, "{~w, ~w}.~n", [Tag, Val]);
-do_write_manager_conf(Fd, {port = Tag, Val} ) ->
-    io:format(Fd, "{~w, ~w}.~n", [Tag, Val]);
-do_write_manager_conf(Fd, {engine_id = Tag, Val} ) ->
+do_write_manager_conf(Fd, {Tag, Val})
+  when Tag =:= engine_id ->
     io:format(Fd, "{~w, \"~s\"}.~n", [Tag, Val]);
-do_write_manager_conf(Fd, {max_message_size = Tag, Val} ) ->
-    io:format(Fd, "{~w, ~w}.~n", [Tag, Val]);
 do_write_manager_conf(_Fd, Crap) ->
     error({bad_manager_config, Crap}).
 
@@ -168,36 +153,29 @@ write_users_config(Dir, Conf) ->
     Hdr = header() ++ Comment,
     write_users_config(Dir, Hdr, Conf).
 
-write_users_config(Dir, Hdr, Conf) 
+write_users_config(Dir, Hdr, Conf)
   when is_list(Dir) andalso is_list(Hdr) andalso is_list(Conf) ->
-    Verify = fun()   -> verify_users_conf(Conf)         end,
-    Write  = fun(Fd) -> write_users_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, ?USERS_CONF_FILE, Verify, Write).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_user_config/2,
+    Write = fun (Fd, Entries) -> write_users_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, ?USERS_CONF_FILE, Order, Check, Write, Conf).
 
-
-append_users_config(Dir, Conf) 
+append_users_config(Dir, Conf)
   when is_list(Dir) andalso is_list(Conf) ->
-    Verify = fun()   -> verify_users_conf(Conf)    end,
-    Write  = fun(Fd) -> write_users_conf(Fd, Conf) end,
-    append_config_file(Dir, ?USERS_CONF_FILE, Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_user_config/2,
+    Write = fun write_users_conf/2,
+    append_config_file(Dir, ?USERS_CONF_FILE, Order, Check, Write, Conf).
 
 read_users_config(Dir) when is_list(Dir) ->
-    Verify = fun(Entry) -> verify_users_conf_entry(Entry) end,
-    read_config_file(Dir, ?USERS_CONF_FILE, Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_user_config/2,
+    read_config_file(Dir, ?USERS_CONF_FILE, Order, Check).
 
-    
-verify_users_conf([]) ->
-    ok;
-verify_users_conf([H|T]) ->
-    verify_users_conf_entry(H),
-    verify_users_conf(T);
-verify_users_conf(X) ->
-    error({bad_users_conf, X}).
-
-verify_users_conf_entry(Entry) ->
-    {ok, _} = snmpm_config:check_user_config(Entry),
-    ok.
+
+check_user_config(Entry, State) ->
+    {check_ok(snmpm_config:check_user_config(Entry)),
+     State}.
 
 write_users_conf(Fd, "", Conf) ->
     write_users_conf(Fd, Conf);
@@ -223,9 +201,10 @@ do_write_users_conf(_Fd, Crap) ->
 %% ------ agents.conf ------
 %% 
 
-agents_entry(UserId, TargetName, Comm, Ip, Port, EngineID, Timeout, 
-	     MaxMessageSize, Version, SecModel, SecName, SecLevel) ->
-    {UserId, TargetName, Comm, Ip, Port, EngineID, Timeout, 
+agents_entry(
+  UserId, TargetName, Comm, Domain_or_Ip, Addr_or_Port, EngineID, Timeout,
+  MaxMessageSize, Version, SecModel, SecName, SecLevel) ->
+    {UserId, TargetName, Comm, Domain_or_Ip, Addr_or_Port, EngineID, Timeout,
      MaxMessageSize, Version, SecModel, SecName, SecLevel}.
 
 
@@ -240,36 +219,29 @@ write_agents_config(Dir, Conf) ->
     Hdr = header() ++ Comment, 
     write_agents_config(Dir, Hdr, Conf).
 
-write_agents_config(Dir, Hdr, Conf) 
+write_agents_config(Dir, Hdr, Conf)
   when is_list(Dir) andalso is_list(Hdr) andalso is_list(Conf) ->
-    Verify = fun()   -> verify_agents_conf(Conf)         end,
-    Write  = fun(Fd) -> write_agents_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, ?AGENTS_CONF_FILE, Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_agent_config/2,
+    Write = fun (Fd, Entries) -> write_agents_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, ?AGENTS_CONF_FILE, Order, Check, Write, Conf).
 
-append_agents_config(Dir, Conf) 
+append_agents_config(Dir, Conf)
   when is_list(Dir) andalso is_list(Conf) ->
-    Verify = fun()   -> verify_agents_conf(Conf)    end,
-    Write  = fun(Fd) -> write_agents_conf(Fd, Conf) end,
-    append_config_file(Dir, ?AGENTS_CONF_FILE, Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_agent_config/2,
+    Write = fun write_agents_conf/2,
+    append_config_file(Dir, ?AGENTS_CONF_FILE, Order, Check, Write, Conf).
 
 read_agents_config(Dir) ->
-    Verify = fun(Entry) -> verify_agents_conf_entry(Entry) end,
-    read_config_file(Dir, ?AGENTS_CONF_FILE, Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_agent_config/2,
+    read_config_file(Dir, ?AGENTS_CONF_FILE, Order, Check).
 
 
-verify_agents_conf([]) ->
-    ok;
-verify_agents_conf([H|T]) ->
-    verify_agents_conf_entry(H),
-    verify_agents_conf(T);
-verify_agents_conf(X) ->
-    error({bad_agents_config, X}).
-
-verify_agents_conf_entry(Entry) ->
-    {ok, _} = snmpm_config:check_agent_config(Entry),
-    ok.
+check_agent_config(Entry, State) ->
+    {check_ok(snmpm_config:check_agent_config(Entry)),
+     State}.
 
 write_agents_conf(Fd, "", Conf) ->
     write_agents_conf(Fd, Conf);
@@ -283,13 +255,15 @@ write_agents_conf(Fd, [H|T]) ->
     do_write_agents_conf(Fd, H),
     write_agents_conf(Fd, T).
 
-do_write_agents_conf(Fd, 
-		    {UserId, 
-		     TargetName, Comm, Ip, Port, EngineID, 
-		     Timeout, MaxMessageSize, Version, 
-		     SecModel, SecName, SecLevel} = _A) ->
-    io:format(Fd, 
-	      "{~w, \"~s\", \"~s\", ~w, ~w, \"~s\", ~w, ~w, ~w, ~w, \"~s\", ~w}.~n", [UserId, TargetName, Comm, Ip, Port, EngineID, Timeout, MaxMessageSize, Version, SecModel, SecName, SecLevel]);
+do_write_agents_conf(
+  Fd,
+  {UserId, TargetName, Comm, Ip, Port, EngineID,
+   Timeout, MaxMessageSize, Version, SecModel, SecName, SecLevel} = _A) ->
+    io:format(
+      Fd,
+      "{~w, \"~s\", \"~s\", ~w, ~w, \"~s\", ~w, ~w, ~w, ~w, \"~s\", ~w}.~n",
+      [UserId, TargetName, Comm, Ip, Port, EngineID,
+       Timeout, MaxMessageSize, Version, SecModel, SecName, SecLevel]);
 do_write_agents_conf(_Fd, Crap) ->
     error({bad_agents_config, Crap}).
 
@@ -315,37 +289,30 @@ write_usm_config(Dir, Conf) ->
     Hdr = header() ++ Comment,
     write_usm_config(Dir, Hdr, Conf).
 
-write_usm_config(Dir, Hdr, Conf) 
+write_usm_config(Dir, Hdr, Conf)
   when is_list(Dir) andalso is_list(Hdr) andalso is_list(Conf) ->
-    Verify = fun()   -> verify_usm_conf(Conf)         end,
-    Write  = fun(Fd) -> write_usm_conf(Fd, Hdr, Conf) end,
-    write_config_file(Dir, ?USM_USERS_CONF_FILE, Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_usm_user_config/2,
+    Write = fun (Fd, Entries) -> write_usm_conf(Fd, Hdr, Entries) end,
+    write_config_file(Dir, ?USM_USERS_CONF_FILE, Order, Check, Write, Conf).
 
-append_usm_config(Dir, Conf) 
+append_usm_config(Dir, Conf)
   when is_list(Dir) andalso is_list(Conf) ->
-    Verify = fun()   -> verify_usm_conf(Conf)    end,
-    Write  = fun(Fd) -> write_usm_conf(Fd, Conf) end,
-    append_config_file(Dir, ?USM_USERS_CONF_FILE, Verify, Write).
-
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_usm_user_config/2,
+    Write = fun write_usm_conf/2,
+    append_config_file(Dir, ?USM_USERS_CONF_FILE, Order, Check, Write, Conf).
 
 read_usm_config(Dir) 
   when is_list(Dir) ->
-    Verify = fun(Entry) -> verify_usm_conf_entry(Entry) end,
-    read_config_file(Dir, ?USM_USERS_CONF_FILE, Verify).
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_usm_user_config/2,
+    read_config_file(Dir, ?USM_USERS_CONF_FILE, Order, Check).
 
 
-verify_usm_conf([]) ->
-    ok;
-verify_usm_conf([H|T]) ->
-    verify_usm_conf_entry(H),
-    verify_usm_conf(T);
-verify_usm_conf(X) ->
-    error({bad_usm_conf, X}).
-
-verify_usm_conf_entry(Entry) ->
-    {ok, _} = snmpm_config:check_usm_user_config(Entry),
-    ok.
+check_usm_user_config(Entry, State) ->
+    {check_ok(snmpm_config:check_usm_user_config(Entry)),
+     State}.
 
 write_usm_conf(Fd, "", Conf) ->
     write_usm_conf(Fd, Conf);
@@ -359,41 +326,49 @@ write_usm_conf(Fd, [H|T]) ->
     do_write_usm_conf(Fd, H),
     write_usm_conf(Fd, T).
 
-do_write_usm_conf(Fd, 
-		  {EngineID, UserName, AuthP, AuthKey, PrivP, PrivKey}) ->
-    io:format(Fd, "{\"~s\", \"~s\", ~w, ~w, ~w, ~w}.~n", 
-	      [EngineID, UserName, AuthP, AuthKey, PrivP, PrivKey]);
-do_write_usm_conf(Fd, 
-		  {EngineID, UserName, SecName, 
-		   AuthP, AuthKey, PrivP, PrivKey}) ->
-    io:format(Fd, "{\"~s\", \"~s\", \"~s\", í~w, ~w, ~w, ~w}.~n",
-	      [EngineID, UserName, SecName, AuthP, AuthKey, PrivP, PrivKey]);
+do_write_usm_conf(
+  Fd,
+  {EngineID, UserName, AuthP, AuthKey, PrivP, PrivKey}) ->
+    io:format(
+      Fd, "{\"~s\", \"~s\", ~w, ~w, ~w, ~w}.~n",
+      [EngineID, UserName, AuthP, AuthKey, PrivP, PrivKey]);
+do_write_usm_conf(
+  Fd,
+  {EngineID, UserName, SecName,
+   AuthP, AuthKey, PrivP, PrivKey}) ->
+    io:format(
+      Fd, "{\"~s\", \"~s\", \"~s\", í~w, ~w, ~w, ~w}.~n",
+      [EngineID, UserName, SecName, AuthP, AuthKey, PrivP, PrivKey]);
 do_write_usm_conf(_Fd, Crap) ->
     error({bad_usm_conf, Crap}).
 
 
 %% ---- config file wrapper functions ----
 
-write_config_file(Dir, File, Verify, Write) ->
-    snmp_config:write_config_file(Dir, File, Verify, Write).
+write_config_file(Dir, File, Order, Check, Write, Conf) ->
+    snmp_config:write_config_file(Dir, File, Order, Check, Write, Conf).
 
-append_config_file(Dir, File, Verify, Write) ->
-    snmp_config:append_config_file(Dir, File, Verify, Write).
-
-read_config_file(Dir, File, Verify) ->
-    snmp_config:read_config_file(Dir, File, Verify).
+append_config_file(Dir, File, Order, Check, Write, Conf) ->
+    snmp_config:append_config_file(Dir, File, Order, Check, Write, Conf).
 
+read_config_file(Dir, File, Order, Check) ->
+    snmp_config:read_config_file(Dir, File, Order, Check).
 
 %% ---- config file utility functions ----
 
+check_ok(ok) ->
+    ok;
+check_ok({ok, _}) ->
+    ok.
+
 header() ->
     {Y,Mo,D} = date(),
     {H,Mi,S} = time(),
-    io_lib:format("%% This file was generated by "
-		  "~w (version-~s) ~w-~2.2.0w-~2.2.0w "
-		  "~2.2.0w:~2.2.0w:~2.2.0w\n",
-		  [?MODULE, ?version, Y, Mo, D, H, Mi, S]).
-
+    io_lib:format(
+      "%% This file was generated by "
+      "~w (version-~s) ~w-~2.2.0w-~2.2.0w "
+      "~2.2.0w:~2.2.0w:~2.2.0w\n",
+      [?MODULE, ?version, Y, Mo, D, H, Mi, S]).
 
 error(R) ->
     throw({error, R}).
diff --git a/lib/snmp/src/manager/snmpm_config.erl b/lib/snmp/src/manager/snmpm_config.erl
index 736debe544..118cdcd1df 100644
--- a/lib/snmp/src/manager/snmpm_config.erl
+++ b/lib/snmp/src/manager/snmpm_config.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
@@ -103,8 +104,10 @@
 	 get_agent_mp_model/2
 	]).
 
--export([check_manager_config/1, 
-	 check_user_config/1, 
+-export([
+	 order_manager_config/2,
+	 check_manager_config/2,
+	 check_user_config/1,
 	 check_agent_config/1,
 	 check_usm_user_config/1]).
 
@@ -165,7 +168,7 @@
 %%%-------------------------------------------------------------------
 
 default_transport_domain() ->
-    transportDomainUdpIpv4.
+    snmpUDPDomain.
 
 
 start_link(Opts) -> 
@@ -190,7 +193,11 @@ register_user(UserId, UserMod, UserData, DefaultAgentConfig)
   when (UserId =/= ?DEFAULT_USER) andalso is_list(DefaultAgentConfig) ->
     case (catch verify_user_behaviour(UserMod)) of
 	ok ->
-	    Config = default_agent_config(DefaultAgentConfig),
+	    {ok, SystemDefaultAgentConfig} = agent_info(),
+	    Config =
+		ensure_config(SystemDefaultAgentConfig,
+			      DefaultAgentConfig),
+%%	    Config = default_agent_config(DefaultAgentConfig),
 	    call({register_user, UserId, UserMod, UserData, Config});
 	Error ->
 	    Error
@@ -201,19 +208,19 @@ register_user(UserId, _UserMod, _UserData, DefaultAgentConfig)
 register_user(UserId, _, _, _) ->
     {error, {bad_user_id, UserId}}.
 
-default_agent_config(DefaultAgentConfig) ->
-    {ok, SystemDefaultAgentConfig} = agent_info(),
-    default_agent_config(SystemDefaultAgentConfig, DefaultAgentConfig).
+%% default_agent_config(DefaultAgentConfig) ->
+%%     {ok, SystemDefaultAgentConfig} = agent_info(),
+%%     default_agent_config(SystemDefaultAgentConfig, DefaultAgentConfig).
 
-default_agent_config([], DefaultAgentConfig) ->
-    DefaultAgentConfig;
-default_agent_config([{Key, _} = Entry|T], DefaultAgentConfig) ->
-    case lists:keysearch(Key, 1, DefaultAgentConfig) of
-	{value, _} ->
-	    default_agent_config(T, DefaultAgentConfig);
-	false ->
-	    default_agent_config(T, [Entry|DefaultAgentConfig])
-    end.
+%% default_agent_config([], DefaultAgentConfig) ->
+%%     DefaultAgentConfig;
+%% default_agent_config([{Key, _} = Entry|T], DefaultAgentConfig) ->
+%%     case lists:keymember(Key, 1, DefaultAgentConfig) of
+%% 	true ->
+%% 	    default_agent_config(T, DefaultAgentConfig);
+%% 	false ->
+%% 	    default_agent_config(T, [Entry|DefaultAgentConfig])
+%%     end.
 
 
 verify_user_behaviour(UserMod) ->
@@ -280,9 +287,10 @@ do_user_info(_UserId, BadItem) ->
 
 %% A target-name constructed in this way is a string with the following: 
 %% <IP-address>:<Port>-<Version>
-%% This is intended for backward compatibility and therefor has
+%% This is intended for backward compatibility and therefore has
 %% only support for IPv4 addresses and *no* other transport domain.
-mk_target_name(Addr0, Port, Config) when is_list(Config) ->
+mk_target_name(Domain, Addr, Config)
+  when is_atom(Domain), is_list(Config) ->
     Version = 
 	case lists:keysearch(version, 1, Config) of
 	    {value, {_, V}} ->
@@ -290,18 +298,35 @@ mk_target_name(Addr0, Port, Config) when is_list(Config) ->
 	    false ->
 		select_lowest_supported_version()
 	end,
-    case normalize_address(Addr0) of
-	{A, B, C, D} ->
-	    lists:flatten(
-	      io_lib:format("~w.~w.~w.~w:~w-~w", [A, B, C, D, Port, Version]));
-	[A, B, C, D] ->
+    try
+	lists:flatten(
+	  io_lib:format(
+	    "~s-~w", [snmp_conf:mk_addr_string({Domain, Addr}), Version]))
+    catch
+	_ ->
 	    lists:flatten(
-	      io_lib:format("~w.~w.~w.~w:~w-~w", [A, B, C, D, Port, Version]));
-	_ -> 
+	      io_lib:format("~p-~w", [Addr, Version]))
+    end;
+mk_target_name(Ip, Port, Config)
+  when is_integer(Port), is_list(Config) ->
+    Domain = default_transport_domain(),
+    try fix_address(Domain, {Ip, Port}) of
+	Address ->
+	    mk_target_name(Domain, Address, Config)
+    catch
+	_ ->
+	    Version =
+		case lists:keysearch(version, 1, Config) of
+		    {value, {_, V}} ->
+			V;
+		    false ->
+			select_lowest_supported_version()
+		end,
 	    lists:flatten(
-	      io_lib:format("~p:~w-~w", [Addr0, Port, Version]))
+	      io_lib:format("~p:~w-~w", [Ip, Port, Version]))
     end.
-	
+
+
 select_lowest_supported_version() ->
     {ok, Versions} = system_info(versions),
     select_lowest_supported_version([v1, v2, v3], Versions).
@@ -335,27 +360,17 @@ register_agent(UserId, TargetName, Config0)
     %%      is not present
     %%   3) Check that there are no invalid or erroneous configs
     %%   4) Check that the manager is capable of using the selected version
-    case verify_agent_config(Config0) of
-	{ok, Config} ->
-	    call({register_agent, UserId, TargetName, Config});
-	Error ->
-	    Error
-    end.
-
-
-verify_agent_config(Conf0) ->
     try
-	begin
-	    verify_mandatory(Conf0, [engine_id, address, reg_type]),
-	    verify_invalid(Conf0, [user_id]),
-	    Conf = verify_agent_config3(Conf0),
-	    Vsns = versions(),
-	    Vsn  = which_version(Conf),
-	    verify_version(Vsn, Vsns),
-	    {ok, Conf}
-	end
+	verify_mandatory(Config0, [engine_id, reg_type]),
+	verify_someof(Config0, [address, taddress]),
+	verify_illegal(Config0, [user_id]),
+	Config = verify_agent_config(Config0),
+	Vsns = versions(),
+	Vsn = which_version(Config),
+	verify_version(Vsn, Vsns),
+	call({register_agent, UserId, TargetName, Config})
     catch
-	throw:Error ->
+	Error ->
 	    Error
     end.
 
@@ -381,52 +396,43 @@ verify_version(Vsn, Vsns) ->
 	    ok;
 	false ->
 	    Reason = {version_not_supported_by_manager, Vsn, Vsns}, 
-	    throw({error, Reason})
-    end.
-
-verify_agent_config3(Conf0) ->
-    %% Fix (transport) address and domain
-    {TDomain, Conf1} = 
-	case lists:keysearch(tdomain, 1, Conf0) of
-	    {value, {tdomain, Dom}} ->
-		{Dom, Conf0};
-	    false ->
-		Dom = default_transport_domain(), 
-		{Dom, [{tdomain, Dom} | Conf0]}
-	end,
-    Conf2 = case lists:keysearch(address, 1, Conf1) of
-		{value, {address, Address}} ->
-		    lists:keyreplace(address, 1, Conf1, 
-				     {address, {TDomain, Address}});
-		false ->
-		    %% This is a mandatory config option, 
-		    %% a later test will detect this
-		    Conf1
-	    end,
-    case verify_agent2(Conf2) of
-	{ok, Conf} ->
-	    Conf;
-	{error, _} = ERROR ->
-	    throw(ERROR)
+	    error(Reason)
     end.
 
-verify_agent_config2(Conf) ->
-    verify_agent2(Conf).
 
 
 unregister_agent(UserId, TargetName) ->
     call({unregister_agent, UserId, TargetName}).
 
 %% This is the old style agent unregistration (using Addr and Port).
-unregister_agent(UserId, Addr0, Port) ->
-    Addr = normalize_address(Addr0),
-    case do_agent_info(Addr, Port, target_name) of
+unregister_agent(UserId, Domain, Address) when is_atom(Domain) ->
+    try fix_address(Domain, Address) of
+	NAddress ->
+	    do_unregister_agent(UserId, Domain, NAddress)
+    catch
+	_ ->
+	    {error, not_found}
+    end;
+unregister_agent(UserId, Ip, Port) when is_integer(Port) ->
+    Domain = default_transport_domain(),
+    try fix_address(Domain, {Ip, Port}) of
+	Address ->
+	    do_unregister_agent(UserId, Domain, Address)
+    catch
+	_ ->
+	    {error, not_found}
+    end.
+
+do_unregister_agent(UserId, Domain, Address) ->
+    case do_agent_info(Domain, Address, target_name) of
 	{ok, TargetName} ->
 	    unregister_agent(UserId, TargetName);
 	Error ->
 	    Error
     end.
 
+
+
 agent_info() ->
     agent_info(?DEFAULT_TARGETNAME, all).
 
@@ -437,27 +443,76 @@ agent_info(TargetName, all) ->
 	All ->
 	    {ok, [{Item, Val} || {{_, Item}, Val} <- All]}
     end;
+%% Begin backwards compatibility
+agent_info(TargetName, address) ->
+    case agent_info({TargetName, taddress}) of
+	{ok, Val} ->
+	    {Addr, _} = Val,
+	    {ok, Addr};
+	_ ->
+	    %% This should be redundant since 'taddress' should exist
+	    agent_info({TargetName, address})
+    end;
+agent_info(TargetName, port) ->
+    case agent_info({TargetName, taddress}) of
+	{ok, Val} ->
+	    {_, Port} = Val,
+	    {ok, Port};
+	_ ->
+	    %% This should be redundant since 'taddress' should exist
+	    agent_info({TargetName, port})
+    end;
+%% End backwards compatibility
 agent_info(TargetName, Item) ->
-    case ets:lookup(snmpm_agent_table, {TargetName, Item}) of
+    agent_info({TargetName, Item}).
+
+agent_info(Key) ->
+    case ets:lookup(snmpm_agent_table, Key) of
 	[{_, Val}] ->
 	    {ok, Val};
 	[] ->
 	    {error, not_found}
     end.
-    
-agent_info(Addr0, Port, Item) ->
-    Addr = normalize_address(Addr0),
-    do_agent_info(Addr, Port, Item).
 
-do_agent_info(Addr, Port, target_name = Item) ->
-    case ets:lookup(snmpm_agent_table, {Addr, Port, Item}) of
+agent_info(Domain, Address, Item) when is_atom(Domain) ->
+    try fix_address(Domain, Address) of
+	NAddress ->
+	    do_agent_info(Domain, NAddress, Item)
+    catch
+	_Thrown ->
+	    %% p(?MODULE_STRING":agent_info(~p, ~p, ~p) throwed ~p at.~n"
+	    %%   "    ~p",
+	    %%   [Domain, Address, Item, _Thrown, erlang:get_stacktrace()]),
+	    {error, not_found}
+    end;
+agent_info(Ip, Port, Item) when is_integer(Port) ->
+    %% p(?MODULE_STRING":agent_info(~p, ~p, ~p) entry~n",
+    %%   [Ip, Port, Item]),
+    Domain = default_transport_domain(),
+    try fix_address(Domain, {Ip, Port}) of
+	Address ->
+	    do_agent_info(Domain, Address, Item)
+    catch
+	_Thrown ->
+	    %% p(?MODULE_STRING":agent_info(~p, ~p, ~p) throwed ~p at.~n"
+	    %%   "    ~p",
+	    %%   [Ip, Port, Item, _Thrown, erlang:get_stacktrace()]),
+	    {error, not_found}
+    end.
+
+do_agent_info(Domain, Address, target_name = Item) ->
+    %% p(?MODULE_STRING":do_agent_info(~p, ~p, ~p) entry~n",
+    %%   [Domain, Address, Item]),
+    case ets:lookup(snmpm_agent_table, {Domain, Address, Item}) of
 	[{_, Val}] ->
 	    {ok, Val};
 	[] ->
 	    {error, not_found}
     end;
-do_agent_info(Addr, Port, Item) ->
-    case do_agent_info(Addr, Port, target_name) of
+do_agent_info(Domain, Address, Item) ->
+    %% p(?MODULE_STRING":do_agent_info(~p, ~p, ~p) entry~n",
+    %%   [Domain, Address, Item]),
+    case do_agent_info(Domain, Address, target_name) of
 	{ok, TargetName} ->
 	    agent_info(TargetName, Item);
 	Error ->
@@ -465,6 +520,19 @@ do_agent_info(Addr, Port, Item) ->
     end.
 
 
+ensure_agent_info(_, [], Info) ->
+    Info;
+ensure_agent_info(TargetName, [Item|Items], Info) ->
+    case lists:keymember(Item, 1, Info) of
+	true ->
+	    ensure_agent_info(TargetName, Items, Info);
+	false ->
+	    {ok, Value} = agent_info(TargetName, Item),
+	    ensure_agent_info(TargetName, Items, [{Item, Value}|Info])
+    end.
+
+
+
 which_agents() ->
     which_agents('_').
 
@@ -474,38 +542,6 @@ which_agents(UserId) ->
     [TargetName || [TargetName] <- Agents].
 
 
-verify_agent_info(TargetName, Info0) ->
-    try 
-	begin
-	    verify_invalid(Info0, [user_id]), 
-	    %% Check if address is part of the list and
-	    %% if so update it with the domain info. 
-	    Info = 
-		case lists:keysearch(address, 1, Info0) of
-		    {value, {address, Addr}} ->
-			%% If domain is part of the info, then use it.
-			%% If not, lookup what is already stored for 
-			%% this agent and use that.
-			Domain = 
-			    case lists:keysearch(tdomain, 1, Info0) of
-				{value, {tdomain, Dom}} ->
-				    Dom;
-				false ->
-				    {ok, Dom} = 
-					agent_info(TargetName, tdomain),
-				    Dom
-			    end,
-			Addr2 = {Domain, Addr}, 
-			lists:keyreplace(address, 1, Info0, {address, Addr2});
-		    false ->
-			Info0
-		end,
-	    verify_agent2(Info)
-	end
-    catch
-	throw:Error ->
-	    Error
-    end.
 
 update_agent_info(UserId, TargetName, Info) ->
     call({update_agent_info, UserId, TargetName, Info}).
@@ -740,7 +776,7 @@ verify_usm_user_config(EngineID, Name, Config) ->
     try
 	begin
 	    verify_mandatory(Config, []), 
-	    verify_invalid(Config, [engine_id, name]),
+	    verify_illegal(Config, [engine_id, name]),
 	    verify_usm_user_config2(EngineID, Name, Config)
 	end
     catch 
@@ -1073,7 +1109,11 @@ do_init(Opts) ->
     %% -- Prio (optional) --
     Prio = get_opt(priority, Opts, normal),
     ets:insert(snmpm_config_table, {prio, Prio}),
-    process_flag(priority, Prio),
+    try process_flag(priority, Prio)
+    catch
+	error:badarg ->
+	    error({invalid_priority,Prio})
+    end,
 
     %% -- Server (optional) --
     ServerOpts = get_opt(server,         Opts,      []),
@@ -1215,6 +1255,12 @@ dets_open(Dir, DbInitError, Repair, AutoSave) ->
 		    end
 	    end;
 	_ ->
+	    case DbInitError of
+		create_db_and_dir ->
+		    ok = filelib:ensure_dir(Filename);
+		_ ->
+		    ok
+	    end,
 	    case do_dets_open(Name, Filename, Repair, AutoSave) of
 		{ok, _Dets} ->
 		    ok;
@@ -1265,36 +1311,6 @@ verify_options(Opts, Mandatory) ->
     verify_mandatory_options(Opts, Mandatory),
     verify_options(Opts).
 
-%% mandatory() -> [mand()]
-%% mand() -> atom() | {atom, [atom()]}
-verify_mandatory_options(_Opts, []) ->
-    ok;
-verify_mandatory_options(Opts, [Mand|Mands]) ->
-    verify_mandatory_option(Opts, Mand),
-    verify_mandatory_options(Opts, Mands).
-
-verify_mandatory_option(Opts, {Mand, MandSubOpts}) ->
-    ?d("verify_mandatory_option -> entry with"
-       "~n   Mand:        ~p"
-       "~n   MandSubObjs: ~p", [Mand, MandSubOpts]),
-    case lists:keysearch(Mand, 1, Opts) of
-	{value, {Mand, SubOpts}} ->
-	    verify_mandatory_options(SubOpts, MandSubOpts);
-	false ->
-	    ?d("missing mandatory option: ~w [~p]", [Mand, MandSubOpts]),
-	    error({missing_mandatory, Mand, MandSubOpts})
-    end;
-verify_mandatory_option(Opts, Mand) ->
-    ?d("verify_mandatory_option -> entry with"
-       "~n   Mand:        ~p", [Mand]),
-    case lists:keymember(Mand, 1, Opts) of
-	true ->
-	    ok;
-	false ->
-	    ?d("missing mandatory option: ~w", [Mand]),
-	    error({missing_mandatory, Mand})
-    end.
-	
 verify_options([]) ->
     ?d("verify_options -> done", []),
     ok;
@@ -1316,7 +1332,14 @@ verify_option({server, ServerOpts}) ->
     verify_server_opts(ServerOpts);
 verify_option({note_store, NoteStoreOpts}) ->
     verify_note_store_opts(NoteStoreOpts);
-verify_option({config, ConfOpts}) ->
+verify_option({config, ConfOpts0}) ->
+    %% Make sure any db_dir option is first in the options list to make it
+    %% easier to check if the db_init_error option specifies that a missing
+    %% db_dir should be created.
+    ConfOpts = case lists:keytake(db_dir, 1, ConfOpts0) of
+                   false -> ConfOpts0;
+                   {value, Result, OtherOpts} -> [Result|OtherOpts]
+               end,
     verify_config_opts(ConfOpts);
 verify_option({versions, Vsns}) ->
     verify_versions(Vsns);
@@ -1365,7 +1388,12 @@ verify_config_opts([{dir, Dir}|Opts]) ->
     verify_conf_dir(Dir),
     verify_config_opts(Opts);
 verify_config_opts([{db_dir, Dir}|Opts]) ->
-    verify_conf_db_dir(Dir),
+    case lists:keyfind(db_init_error, 1, Opts) of
+        {db_init_error, create_db_and_dir} ->
+            verify_conf_db_dir(Dir, false);
+        _ ->
+            verify_conf_db_dir(Dir, true)
+    end,
     verify_config_opts(Opts);
 verify_config_opts([{db_init_error, DbInitErr}|Opts]) ->
     verify_conf_db_init_error(DbInitErr),
@@ -1443,7 +1471,7 @@ verify_conf_dir(Dir) ->
 	    error({invalid_conf_dir, Dir})
     end.
 
-verify_conf_db_dir(Dir) ->
+verify_conf_db_dir(Dir, true) ->
     case (catch verify_dir(Dir)) of
 	ok ->
 	    ok;
@@ -1451,13 +1479,16 @@ verify_conf_db_dir(Dir) ->
 	    error({invalid_conf_db_dir, Dir, Reason});
 	_ ->
 	    error({invalid_conf_db_dir, Dir})
-    end.
-
+    end;
+verify_conf_db_dir(_Dir, false) ->
+    ok.
 
 verify_conf_db_init_error(terminate) ->
     ok;
 verify_conf_db_init_error(create) ->
     ok;
+verify_conf_db_init_error(create_db_and_dir) ->
+    ok;
 verify_conf_db_init_error(InvalidDbInitError) ->
     error({invalid_conf_db_init_error, InvalidDbInitError}).
 
@@ -1485,7 +1516,9 @@ verify_versions([]) ->
     ok;
 verify_versions([Vsn|Vsns]) ->
     verify_version(Vsn),
-    verify_versions(Vsns).
+    verify_versions(Vsns);
+verify_versions(Vsns) ->
+    error({invalid_versions, Vsns}).
 
 verify_version(v1) ->
     ok;
@@ -1593,7 +1626,38 @@ verify_verbosity(Verbosity) ->
 	_ ->
 	    error({invalid_verbosity, Verbosity})
     end.
+
     
+%% mandatory() -> [mand()]
+%% mand() -> atom() | {atom, [atom()]}
+verify_mandatory_options(_Opts, []) ->
+    ok;
+verify_mandatory_options(Opts, [Mand|Mands]) ->
+    verify_mandatory_option(Opts, Mand),
+    verify_mandatory_options(Opts, Mands).
+
+verify_mandatory_option(Opts, {Mand, MandSubOpts}) ->
+    ?d("verify_mandatory_option -> entry with"
+       "~n   Mand:        ~p"
+       "~n   MandSubObjs: ~p", [Mand, MandSubOpts]),
+    case lists:keysearch(Mand, 1, Opts) of
+	{value, {Mand, SubOpts}} ->
+	    verify_mandatory_options(SubOpts, MandSubOpts);
+	false ->
+	    ?d("missing mandatory option: ~w [~p]", [Mand, MandSubOpts]),
+	    error({missing_mandatory, Mand, MandSubOpts})
+    end;
+verify_mandatory_option(Opts, Mand) ->
+    ?d("verify_mandatory_option -> entry with"
+       "~n   Mand:        ~p", [Mand]),
+    case lists:keymember(Mand, 1, Opts) of
+	true ->
+	    ok;
+	false ->
+	    ?d("missing mandatory option: ~w", [Mand]),
+	    error({missing_mandatory, Mand})
+    end.
+
 %% ------------------------------------------------------------------------
 
 init_manager_config([]) ->
@@ -1608,181 +1672,91 @@ init_agent_default() ->
     %% The purpose of the default_agent is only to have a place
     %% to store system wide default values related to agents.
     %% 
-
-    %% Port
-    init_agent_default(port, ?DEFAULT_AGENT_PORT),
-
-    %% Timeout
-    init_agent_default(timeout, 10000),
-
-    %% Max message (packet) size
-    init_agent_default(max_message_size, 484),
-
-    %% MPModel
-    init_agent_default(version, v2),
-
-    %% SecModel
-    init_agent_default(sec_model, v2c),
-
-    %% SecName
-    init_agent_default(sec_name, "initial"),
-
-    %% SecLevel
-    init_agent_default(sec_level, noAuthNoPriv),
-
-    %% Community
-    init_agent_default(community, "all-rights"),
-    ok.
-
-
-init_agent_default(Item, Val) when Item =/= user_id ->
-    case do_update_agent_info(default_agent, Item, Val) of
-	ok ->
-	    ok;
-	{error, Reason} ->
-	    error(Reason)
-    end.
-
+    AgentDefaultConfig =
+	[{port, ?DEFAULT_AGENT_PORT}, % Port
+	 {timeout, 10000},            % Timeout
+	 {max_message_size, 484},     % Max message (packet) size
+	 {version, v2},               % MPModel
+	 {sec_model, v2c},            % SecModel
+	 {sec_name, "initial"},       % SecName
+	 {sec_level, noAuthNoPriv},   % SecLevel
+	 {community, "all-rights"}],  % Community
+    do_update_agent_info(default_agent, AgentDefaultConfig).
 
 read_agents_config_file(Dir) ->
-    Check = fun(C) -> check_agent_config2(C) end,
-    case read_file(Dir, "agents.conf", Check, []) of
-	{ok, Conf} ->
-	    Conf;
-	Error ->
+    Order = fun snmp_conf:no_order/2,
+    Check = fun check_agent_config/2,
+    try read_file(Dir, "agents.conf", Order, Check, [])
+    catch
+	throw:Error ->
 	    ?vlog("agent config error: ~p", [Error]),
-	    throw(Error)
+	    erlang:raise(throw, Error, erlang:get_stacktrace())
     end.
 
-check_agent_config2(Agent) ->
-    case (catch check_agent_config(Agent)) of
-	{ok, {UserId, TargetName, Conf, Version}} ->
-	    {ok, Vsns} = system_info(versions),
-	    case lists:member(Version, Vsns) of
-		true ->
-		    {ok, {UserId, TargetName, Conf}};
-		false ->
-		    error({version_not_supported_by_manager, 
-			   Version, Vsns})
-	    end;
-	Err ->
-	    throw(Err)
+check_agent_config(Agent, State) ->
+    {ok, {UserId, TargetName, Conf, Version}} = check_agent_config(Agent),
+    {ok, Vsns} = system_info(versions),
+    case lists:member(Version, Vsns) of
+	true ->
+	    {{ok, {UserId, TargetName, Conf}}, State};
+	false ->
+	    error({version_not_supported_by_manager, Version, Vsns})
     end.
 
 %% For backward compatibility
-check_agent_config({UserId, 
-		    TargetName, 
-		    Community, 
-		    Ip, Port, 
-		    EngineId, 
-		    Timeout, MaxMessageSize, 
-		    Version, SecModel, SecName, SecLevel}) ->
-    TDomain = default_transport_domain(),
-    check_agent_config({UserId, 
-			TargetName, 
-			Community, 
-			TDomain, Ip, Port, 
-			EngineId, 
-			Timeout, MaxMessageSize, 
-			Version, SecModel, SecName, SecLevel});
-
-check_agent_config({UserId, 
-		    TargetName, 
-		    Community, 
-		    TDomain, Ip, Port, 
-		    EngineId, 
-		    Timeout, MaxMessageSize, 
-		    Version, SecModel, SecName, SecLevel}) ->
-    ?vtrace("check_agent_config -> entry with"
-	    "~n   UserId:         ~p"
-	    "~n   TargetName:     ~p"
-	    "~n   Community:      ~p"
-	    "~n   TDomain:        ~p"
-	    "~n   Ip:             ~p"
-	    "~n   Port:           ~p"
-	    "~n   EngineId:       ~p"
-	    "~n   Timeout:        ~p"
-	    "~n   MaxMessageSize: ~p"
-	    "~n   Version:        ~p"
-	    "~n   SecModel:       ~p"
-	    "~n   SecName:        ~p"
-	    "~n   SecLevel:       ~p", 
-	    [UserId, TargetName, Community, 
-	     TDomain, Ip, Port, 
-	     EngineId, Timeout, MaxMessageSize, 
-	     Version, SecModel, SecName, SecLevel]),
-    Addr = normalize_address(TDomain, Ip),
-    ?vtrace("check_agent_config -> Addr: ~p", [Addr]),
-    Agent = {UserId, 
-	     TargetName, 
-	     Community, 
-	     TDomain, Addr, Port, 
-	     EngineId, 
-	     Timeout, MaxMessageSize, 
-	     Version, SecModel, SecName, SecLevel},
-    {ok, verify_agent(Agent)};
+check_agent_config(
+  {UserId, TargetName, Community, Domain, Addr,
+   EngineId, Timeout, MaxMessageSize,
+   Version, SecModel, SecName, SecLevel}) when is_atom(Domain) ->
+    check_agent_config(
+      UserId, TargetName, Community, Domain, Addr,
+      EngineId, Timeout, MaxMessageSize,
+      Version, SecModel, SecName, SecLevel);
+check_agent_config(
+  {UserId, TargetName, Community, Ip, Port,
+   EngineId, Timeout, MaxMessageSize,
+   Version, SecModel, SecName, SecLevel}) when is_integer(Port) ->
+    Domain = default_transport_domain(),
+    Addr = {Ip, Port},
+    check_agent_config(
+      UserId, TargetName, Community, Domain, Addr,
+      EngineId, Timeout, MaxMessageSize,
+      Version, SecModel, SecName, SecLevel);
+check_agent_config(
+  {_UserId, _TargetName, _Community, Domain, Addr,
+   _EngineId, _Timeout, _MaxMessageSize,
+   _Version, _SecModel, _SecName, _SecLevel}) ->
+    error({bad_address, {Domain, Addr}});
+check_agent_config(
+  {UserId, TargetName, Community, Domain, Ip, Port,
+   EngineId, Timeout, MaxMessageSize,
+   Version, SecModel, SecName, SecLevel}) ->
+    Addr = {Ip, Port},
+    check_agent_config(
+      UserId, TargetName, Community, Domain, Addr,
+      EngineId, Timeout, MaxMessageSize,
+      Version, SecModel, SecName, SecLevel);
 check_agent_config(Agent) ->
     error({bad_agent_config, Agent}).
 
-
-init_agents_config([]) ->
-    ok;
-init_agents_config([Agent|Agents]) ->
-    init_agent_config(Agent),
-    init_agents_config(Agents).
-
-init_agent_config({_UserId, ?DEFAULT_TARGETNAME = TargetName, _Config}) ->
-    throw({error, {invalid_target_name, TargetName}});
-init_agent_config({UserId, TargetName, Config}) ->
-    case handle_register_agent(UserId, TargetName, Config) of
-	ok ->
-	    ok;
-	Error ->
-	    throw(Error)
-    end.
-
-
-%% For backward compatibility
-verify_agent({UserId, 
-	      TargetName, 
-	      Comm, 
-	      Ip, Port, 
-	      EngineId, 
-	      Timeout, MMS, 
-	      Version, SecModel, SecName, SecLevel}) ->
-    TDomain = default_transport_domain(),
-    verify_agent({UserId, 
-		  TargetName, 
-		  Comm, 
-		  TDomain, Ip, Port, 
-		  EngineId, 
-		  Timeout, MMS, 
-		  Version, SecModel, SecName, SecLevel});
-
-verify_agent({UserId, 
-	      TargetName, 
-	      Comm, 
-	      TDomain, Ip, Port, 
-	      EngineId, 
-	      Timeout, MMS, 
-	      Version, SecModel, SecName, SecLevel}) ->
-    ?vdebug("verify_agent -> entry with"
+check_agent_config(
+  UserId, TargetName, Comm, Domain, Addr,
+  EngineId, Timeout, MMS,
+  Version, SecModel, SecName, SecLevel) ->
+    ?vdebug("check_agent_config -> entry with"
 	    "~n   UserId:     ~p"
 	    "~n   TargetName: ~p", [UserId, TargetName]),
     snmp_conf:check_string(TargetName, {gt, 0}),
-    snmp_conf:check_integer(Port, {gt, 0}),
     %% Note that the order of Conf *is* important.
     %% Some properties may depend on others, so that
     %% in order to verify one property, another must
     %% be already verified (and present). An example 
-    %% of this is the property 'address', for which
+    %% of this is the property 'taddress', for which
     %% the property tdomain is needed.
-    Conf0 = 
+    Conf =
 	[{reg_type,         target_name},
-	 {tdomain,          TDomain}, 
-	 %% This should be taddress, but what the*...
-	 {address,          {TDomain, Ip}},
-	 {port,             Port},
+	 {tdomain,          Domain},
+	 {taddress,         fix_address(Domain, Addr)},
 	 {community,        Comm}, 
 	 {engine_id,        EngineId},
 	 {timeout,          Timeout},
@@ -1792,40 +1766,180 @@ verify_agent({UserId,
 	 {sec_name,         SecName},
 	 {sec_level,        SecLevel}
 	],
-    case verify_agent2(Conf0) of
-	{ok, Conf} ->
-	    {UserId, TargetName, Conf, Version};
-	Err ->
-	    throw(Err)
+    {ok, {UserId, TargetName, verify_agent_config(Conf), Version}}.
+
+
+
+init_agents_config([]) ->
+    ok;
+init_agents_config([Agent|Agents]) ->
+    init_agent_config(Agent),
+    init_agents_config(Agents).
+
+init_agent_config({_UserId, ?DEFAULT_TARGETNAME = TargetName, _Config}) ->
+    error({invalid_target_name, TargetName});
+init_agent_config({UserId, TargetName, Config}) ->
+    case handle_register_agent(UserId, TargetName, Config) of
+	ok ->
+	    ok;
+	Error ->
+	    throw(Error)
     end.
 
-verify_agent2(Conf) -> 
-    verify_agent2(Conf, []).
 
-verify_agent2([], VerifiedConf) ->
-    {ok, VerifiedConf};
-verify_agent2([{Item, Val0}|Items], VerifiedConf) ->
-    case verify_val(Item, Val0) of
-	{ok, Val} ->
-	    verify_agent2(Items, [{Item, Val} | VerifiedConf]);
-	Err ->
-	    Err
+
+%% Sort 'tdomain' first then 'port' to ensure both
+%% sorts before 'taddress'.  Keep the order of other items.
+order_agent(ItemA, ItemB) ->
+    snmp_conf:keyorder(1, ItemA, ItemB, [tdomain, port]).
+
+fix_agent_config(Conf) ->
+    ?vdebug("fix_agent_config -> entry with~n~n"
+	    "   Conf: ~p", [Conf]),
+    fix_agent_config(lists:sort(fun order_agent/2, Conf), []).
+
+fix_agent_config([], FixedConf) ->
+    Ret = lists:reverse(FixedConf),
+    ?vdebug("fix_agent_config -> returns:~n"
+	    "   ~p", [Ret]),
+    Ret;
+fix_agent_config([{taddress = Item, Address} = Entry|Conf], FixedConf) ->
+    {value, {tdomain, TDomain}} = lists:keysearch(tdomain, 1, FixedConf),
+    {value, {port, DefaultPort}} = lists:keysearch(port, 1, FixedConf),
+    case snmp_conf:check_address(TDomain, Address, DefaultPort) of
+	ok ->
+	    fix_agent_config(Conf, [Entry|FixedConf]);
+	{ok, NAddress} ->
+	    fix_agent_config(Conf, [{Item, NAddress}|FixedConf])
+    end;
+fix_agent_config([Entry|Conf], FixedConf) ->
+    fix_agent_config(Conf, [Entry|FixedConf]).
+
+
+
+verify_agent_config(Conf) ->
+    verify_agent_config(lists:sort(fun order_agent/2, Conf), []).
+
+verify_agent_config([], VerifiedConf) ->
+    Ret = lists:reverse(VerifiedConf),
+    ?vdebug("verify_agent_config -> returns:~n"
+	    "   ~p", [Ret]),
+    Ret;
+verify_agent_config([{Item, _} = Entry|Conf], VerifiedConf) ->
+    verify_illegal(VerifiedConf, [Item]), % Duplicates are hereby illegal
+    verify_agent_config(Conf, VerifiedConf, Entry);
+verify_agent_config([Bad|_], _VerifiedConf) ->
+    error({bad_agent_config, Bad}).
+
+verify_agent_config(
+  Conf, VerifiedConf, {taddress = Item, Address} = Entry) ->
+    verify_illegal(VerifiedConf, [address]),
+    {TDomain, VC} =
+	case lists:keysearch(tdomain, 1, VerifiedConf) of
+	    {value, {tdomain,TD}} ->
+		{TD, VerifiedConf};
+	    _ ->
+		%% Insert tdomain since it is missing
+		%% Note: not default_transport_domain() since
+		%% taddress is the new format hence the application
+		%% should be tdomain aware and therefore addresses
+		%% on the Domain, Addr format should be used and understood.
+		TD = transportDomainUdpIpv4,
+		{TD, [{tdomain, TD}|VerifiedConf]}
+	end,
+    case snmp_conf:check_address(TDomain, Address, 0) of
+	ok ->
+	    verify_agent_config(Conf, [Entry|VC]);
+	{ok, NAddress} ->
+	    verify_agent_config(Conf, [{Item, NAddress}|VC])
     end;
-verify_agent2([Bad|_], _VerifiedConf) ->
-    {error, {bad_agent_config, Bad}}.
+verify_agent_config(Conf, VerifiedConf, {address, Address}) ->
+    Item = taddress,
+    verify_illegal(VerifiedConf, [Item]),
+    {TDomain, VC} =
+	case lists:keysearch(tdomain, 1, VerifiedConf) of
+	    {value, {tdomain, TD}} ->
+		{TD, VerifiedConf};
+	    _ ->
+		%% Insert tdomain since it is missing
+		TD = default_transport_domain(),
+		{TD, [{tdomain, TD}|VerifiedConf]}
+	end,
+    case snmp_conf:check_address(TDomain, Address, 0) of
+	ok ->
+	    verify_agent_config(Conf, [{Item, Address}|VC]);
+	{ok, NAddress} ->
+	    verify_agent_config(Conf, [{Item, NAddress}|VC])
+    end;
+verify_agent_config(Conf, VerifiedConf, {Item, Val} = Entry) ->
+    case verify_agent_entry(Item, Val) of
+	ok ->
+	    verify_agent_config(Conf, [Entry|VerifiedConf]);
+	{ok, NewVal} ->
+	    verify_agent_config(Conf, [{Item, NewVal}|VerifiedConf])
+    end.
+
+verify_agent_entry(user_id, _UserId) ->
+    ok;
+verify_agent_entry(reg_type, RegType) ->
+    if
+	RegType =:= addr_port;
+	RegType =:= target_name ->
+	    ok;
+	true ->
+	    error({bad_reg_type, RegType})
+    end;
+verify_agent_entry(tdomain, TDomain) ->
+    snmp_conf:check_domain(TDomain);
+verify_agent_entry(port, Port) ->
+    snmp_conf:check_port(Port);
+verify_agent_entry(community, Comm) ->
+    snmp_conf:check_string(Comm);
+verify_agent_entry(engine_id, EngineId) ->
+    case EngineId of
+	discovery ->
+	    ok;
+	_ ->
+	    snmp_conf:check_string(EngineId)
+    end;
+verify_agent_entry(timeout, Timeout) ->
+    snmp_conf:check_timer(Timeout);
+verify_agent_entry(max_message_size, MMS) ->
+    snmp_conf:check_packet_size(MMS);
+verify_agent_entry(version, V) ->
+    if
+	V =:= v1;
+	V =:= v2;
+	V =:= v3 ->
+	    ok;
+	true ->
+	    error({bad_version, V})
+    end;
+verify_agent_entry(sec_model, Model) ->
+    snmp_conf:check_sec_model(Model);
+verify_agent_entry(sec_name, Name) ->
+    try snmp_conf:check_string(Name)
+    catch
+	_ ->
+	    error({bad_sec_name, Name})
+    end;
+verify_agent_entry(sec_level, Level) ->
+    snmp_conf:check_sec_level(Level);
+verify_agent_entry(Item, _) ->
+    error({unknown_item, Item}).
+
 
 
 read_users_config_file(Dir) ->
-    Check = fun(C) -> check_user_config(C) end,
-    case read_file(Dir, "users.conf", Check, []) of
-	{ok, Conf} ->
-	    Conf;
-	Error ->
+    Order = fun snmp_conf:no_order/2,
+    Check = fun (User, State) -> {check_user_config(User), State} end,
+    try read_file(Dir, "users.conf", Order, Check, [])
+    catch
+	throw:Error ->
 	    ?vlog("failure reading users config file: ~n   ~p", [Error]),
-	    throw(Error)
+	    erlang:raise(throw, Error, erlang:get_stacktrace())
     end.
 
-
 check_user_config({Id, Mod, Data}) ->
     ?vtrace("check_user_config -> entry with"
 	    "~n   Id:   ~p"
@@ -1843,21 +1957,18 @@ check_user_config({Id, Mod, Data, DefaultAgentConfig} = _User)
     case (catch verify_user_behaviour(Mod)) of
 	ok ->
 	    ?vtrace("check_user_config -> user behaviour verified", []),
-	    case verify_user_agent_config(DefaultAgentConfig) of
-		{ok, DefAgentConf} ->
-		    ?vtrace("check_user_config -> "
-			    "user agent (default) config verified", []),
-		    User2 = {Id, Mod, Data, DefAgentConf}, 
-	    	    {ok, User2};
-		{error, Reason} ->
-		    error({bad_default_agent_config, Reason})
-	    end;
+	    DefAgentConf =
+		verify_default_agent_config(DefaultAgentConfig),
+	    ?vtrace("check_user_config -> "
+		    "user agent (default) config verified", []),
+	    User2 = {Id, Mod, Data, DefAgentConf},
+	    {ok, User2};
 	Error ->
 	    throw(Error)
     end;
 check_user_config({Id, _Mod, _Data, DefaultAgentConfig}) 
   when (Id =/= ?DEFAULT_USER) ->
-    {error, {bad_default_agent_config, DefaultAgentConfig}};
+    error({bad_default_agent_config, DefaultAgentConfig});
 check_user_config({Id, _Mod, _Data, _DefaultAgentConfig}) ->
     error({bad_user_id, Id});
 check_user_config(User) ->
@@ -1883,7 +1994,7 @@ init_user_config(User) ->
 	    error_msg("user config check failed: "
 		      "~n~w~n~w", [User, Reason])
     end.
-   
+
 verify_user({Id, UserMod, UserData}) ->
     verify_user({Id, UserMod, UserData, []});
 verify_user({Id, UserMod, UserData, DefaultAgentConfig}) 
@@ -1896,15 +2007,24 @@ verify_user({Id, UserMod, UserData, DefaultAgentConfig})
        [Id, UserMod, UserData, DefaultAgentConfig]),
     case (catch verify_user_behaviour(UserMod)) of
 	ok ->
-	    case verify_user_agent_config(DefaultAgentConfig) of
-		{ok, DefAgentConf} ->
-		    Config = default_agent_config(DefAgentConf),
-		    {ok, #user{id                   = Id, 
-			       mod                  = UserMod, 
-			       data                 = UserData, 
-			       default_agent_config = Config}};
-		{error, Reason} ->
-		    error({bad_default_agent_config, Reason})
+	    try
+		{ok, SystemDefaultAgentConfig} = agent_info(),
+		Config =
+		    ensure_config(
+		      SystemDefaultAgentConfig,
+		      verify_default_agent_config(DefaultAgentConfig)),
+%%		Config =
+%%		    default_agent_config(
+%%		      verify_default_agent_config(DefaultAgentConfig)),
+		{ok, #user{id                   = Id,
+			   mod                  = UserMod,
+			   data                 = UserData,
+			   default_agent_config = Config}}
+	    catch
+		Error ->
+		    ?vdebug("verify_user default_agent_config -> throw"
+			    "~n   Error: ~p", [Error]),
+		    error({bad_default_agent_config, Error})
 	    end;
 	Error ->
 	    throw(Error)
@@ -1915,27 +2035,24 @@ verify_user({Id, _UserMod, _UserData, DefaultAgentConfig})
 verify_user({Id, _, _, _}) ->
     {error, {bad_user_id, Id}}.
 
-verify_user_agent_config(Conf) ->
+verify_default_agent_config(Conf) ->
     try
-	begin
-	    verify_invalid(Conf, [user_id, engine_id, address]),
-	    verify_agent_config2(Conf)
-	end
+	verify_illegal(
+	  Conf,
+	  [user_id, engine_id, address, tdomain, taddress]),
+	verify_agent_config(Conf)
     catch
-	throw:Error ->
-	    ?vdebug("verify_user_agent_config -> throw"
+	Error ->
+	    ?vdebug("verify_default_agent_config -> throw"
 		    "~n   Error: ~p", [Error]),
-	    Error
+	    error({bad_default_agent_config, Error})
     end.
 
+
 read_usm_config_file(Dir) ->
-    Check = fun(C) -> check_usm_user_config(C) end,
-    case read_file(Dir, "usm.conf", Check, []) of
-	{ok, Conf} ->
-	    Conf;
-	Error ->
-	    throw(Error)
-    end.
+    Order = fun snmp_conf:no_order/2,
+    Check = fun (User, State) -> {check_usm_user_config(User), State} end,
+    read_file(Dir, "usm.conf", Order, Check, []).
 
 %% Identity-function
 check_usm_user_config({EngineId, Name, 
@@ -2118,125 +2235,128 @@ is_crypto_supported(Func) ->
  
 
 read_manager_config_file(Dir) ->
-    Check = fun(Conf) -> check_manager_config(Conf) end,
-    case read_file(Dir, "manager.conf", Check) of
-	{ok, Conf} ->
-	    ?d("read_manager_config_file -> ok: "
-	       "~n   Conf: ~p", [Conf]),
-	    %% If the address is not specified, then we assume
-	    %% it should be the local host.
-	    %% If the address is not possible to determine
-	    %% that way, then we give up...
-	    check_mandatory_manager_config(Conf),
-	    ensure_manager_config(Conf);
-	Error ->
-	    throw(Error)
-    end.
+    Order = fun order_manager_config/2,
+    Check = fun check_manager_config/2,
+    Conf = read_file(Dir, "manager.conf", Order, Check),
+    ?d("read_manager_config_file -> ok: "
+       "~n   Conf: ~p", [Conf]),
+    %% If the address is not specified, then we assume
+    %% it should be the local host.
+    %% If the address is not possible to determine
+    %% that way, then we give up...
+    verify_someof(Conf, [port, transports]),
+    verify_mandatory(Conf, [engine_id, max_message_size]),
+    default_manager_config(Conf).
+
+default_manager_config(Conf) ->
+    %% Ensure valid transports entry
+    case lists:keyfind(transports, 1, Conf) of
+	false ->
+	    {port, Port} = lists:keyfind(port, 1, Conf),
+	    Domain =
+		case lists:keyfind(domain, 1, Conf) of
+		    false ->
+			default_transport_domain();
+		    {_, D} ->
+			D
+		end,
+	    Family = snmp_conf:tdomain_to_family(Domain),
+	    {ok, Hostname} = inet:gethostname(),
+	    case inet:getaddr(Hostname, Family) of
+		{ok, Address} ->
+		    lists:sort(
+		      fun order_manager_config/2,
+		      [{transports, [{Domain, {Address, Port}}]} | Conf]);
+		{error, _Reason} ->
+		    ?d("default_manager_config -> "
+		       "failed getting ~w address for ~s:~n"
+		       "   _Reason: ~p", [Family, Hostname, _Reason]),
+		    Conf
+	    end;
+	_ ->
+	    Conf
+    end.
+
+order_manager_config(EntryA, EntryB) ->
+    snmp_conf:keyorder(1, EntryA, EntryB, [domain, port]).
+
+check_manager_config(Entry, undefined) ->
+    check_manager_config(Entry, {default_transport_domain(), undefined});
+check_manager_config({domain, Domain}, {_, Port}) ->
+    {snmp_conf:check_domain(Domain), {Domain, Port}};
+check_manager_config({port, Port}, {Domain, _}) ->
+    {ok = snmp_conf:check_port(Port), {Domain, Port}};
+check_manager_config({address, _}, {_, undefined}) ->
+    error({missing_mandatory, port});
+check_manager_config({address = Tag, Ip} = Entry, {Domain, Port} = State) ->
+    {case snmp_conf:check_ip(Domain, Ip) of
+	 ok ->
+	     [Entry,
+	      {transports, [{Domain, {Ip, Port}}]}];
+	 {ok, FixedIp} ->
+	     [{Tag, FixedIp},
+	      {transports, [{Domain, {FixedIp, Port}}]}]
+     end, State};
+check_manager_config({transports = Tag, Transports}, {_, Port} = State)
+  when is_list(Transports) ->
+    CheckedTransports =
+	[case Transport of
+	     {Domain, Address} ->
+		 case
+		     case Port of
+			 undefined ->
+			     snmp_conf:check_address(Domain, Address);
+			 _ ->
+			     snmp_conf:check_address(Domain, Address, Port)
+		     end
+		 of
+		     ok ->
+			 Transport;
+		     {ok, FixedAddress} ->
+			 {Domain, FixedAddress}
+		 end;
+	     _Domain when Port =:= undefined->
+		 error({missing_mandatory, port});
+	     Domain ->
+		 Family = snmp_conf:tdomain_to_family(Domain),
+		 {ok, Hostname} = inet:gethostname(),
+		 case inet:getaddr(Hostname, Family) of
+		     {ok, IpAddr} ->
+			 {Domain, {IpAddr, Port}};
+		     {error, _} ->
+			 error({bad_address, {Domain, Hostname}})
+		 end
+	 end
+	 || Transport <- Transports],
+    {{ok, {Tag, CheckedTransports}}, State};
+check_manager_config(Entry, State) ->
+    {check_manager_config(Entry), State}.
 
-default_manager_config() ->
-    {ok, HostName} = inet:gethostname(),
-    case inet:getaddr(HostName, inet) of
-	{ok, A} ->
-	    [{address, tuple_to_list(A)}];
-	{error, _Reason} ->
-	    ?d("default_manager_config -> failed getting address: "
-	       "~n   _Reason: ~p", [_Reason]),
-	    []
-    end.
-    
-check_manager_config({address, Addr}) ->
-    snmp_conf:check_ip(Addr);
-check_manager_config({port, Port}) ->
-    snmp_conf:check_integer(Port, {gt, 0});
 check_manager_config({engine_id, EngineID}) ->
     snmp_conf:check_string(EngineID);
 check_manager_config({max_message_size, Max}) ->
     snmp_conf:check_integer(Max, {gte, 484});
 check_manager_config(Conf) ->
-    {error, {unknown_config, Conf}}.
-
-
-check_mandatory_manager_config(Conf) ->
-    Mand  = [port, engine_id, max_message_size],
-    check_mandatory_manager_config(Mand, Conf).
-
-check_mandatory_manager_config([], _Conf) ->
-    ok;
-check_mandatory_manager_config([Item|Mand], Conf) ->
-    case lists:keysearch(Item, 1, Conf) of
-	false ->
-	    error({missing_mandatory_manager_config, Item});
-	_ ->
-	    check_mandatory_manager_config(Mand, Conf)
-    end.
-    
-
-ensure_manager_config(Confs) ->
-    ensure_manager_config(Confs, default_manager_config()).
-
-ensure_manager_config(Confs, []) ->
-    Confs;
-ensure_manager_config(Confs, [{Key,_} = DefKeyVal|Defs]) ->
-    case lists:keysearch(Key, 1, Confs) of
-	false ->
-	    ensure_manager_config([DefKeyVal|Confs], Defs);
-	{value, _Conf} ->
-	    ensure_manager_config(Confs, Defs)
-    end.
-
-% ensure_manager_config([], Defs, Confs) ->
-%     Confs ++ Defs;
-% ensure_manager_config(Confs0, [{Key, DefVal}|Defs], Acc) ->
-%     case lists:keysearch(Key, 1, Confs0) of
-% 	false ->
-% 	    ensure_manager_config(Confs0, Defs, [{Key, DefVal}|Acc]);
-% 	{value, Conf} ->
-% 	    Confs = lists:keydelete(Key, 1, Confs0),
-% 	    ensure_manager_config(Confs, Defs, [Conf|Acc])
-%     end.
-			      
+    error({unknown_config, Conf}).
 
 
-read_file(Dir, FileName, Check, Default) ->
-    File = filename:join(Dir, FileName),
-    case file:read_file_info(File) of
-        {ok, _} ->
-            case (catch do_read(File, Check)) of
-		{ok, Conf} ->
-		    {ok, Conf};
-		Error ->
-		    ?vtrace("read_file -> read failed:"
-			    "~n   Error: ~p", [Error]),
-		    Error
-	    end;
-        {error, Reason} ->
+read_file(Dir, FileName, Order, Check, Default) ->
+    try snmp_conf:read(filename:join(Dir, FileName), Order, Check)
+    catch
+	{error, Reason} when element(1, Reason) =:= failed_open ->
 	    ?vlog("failed reading config from ~s: ~p", [FileName, Reason]),
-	    {ok, Default}
+	    Default
     end.
 
-read_file(Dir, FileName, Check) ->
-    File = filename:join(Dir, FileName),
-    case file:read_file_info(File) of
-        {ok, _} ->
-            case (catch do_read(File, Check)) of
-		{ok, Conf} ->
-		    ?vtrace("read_file -> read ok"
-			    "~n   Conf: ~p", [Conf]),
-		    {ok, Conf};
-		Error ->
-		    ?vtrace("read_file -> read failed:"
-			    "~n   Error: ~p", [Error]),
-		    Error
-	    end;
-        {error, Reason} ->
+read_file(Dir, FileName, Order, Check) ->
+    try snmp_conf:read(filename:join(Dir, FileName), Order, Check)
+    catch
+	throw:{error, Reason} = Error
+	  when element(1, Reason) =:= failed_open ->
 	    error_msg("failed reading config from ~s: ~p", [FileName, Reason]),
-	    {error, {failed_reading, FileName, Reason}}
+	    erlang:raise(throw, Error, erlang:get_stacktrace())
     end.
 
-do_read(File, Check) ->
-    {ok, snmp_conf:read(File, Check)}.
-
-
 %%--------------------------------------------------------------------
 %% Func: handle_call/3
 %% Returns: {reply, Reply, State}          |
@@ -2663,30 +2783,50 @@ handle_register_agent(UserId, TargetName, Config) ->
 	    "~n   Config:     ~p", [UserId, TargetName, Config]),
     case (catch agent_info(TargetName, user_id)) of
 	{error, _} ->
-	    ?vtrace("handle_register_agent -> user_id not found in config", []),
+	    ?vtrace(
+	       "handle_register_agent -> user_id not found in config", []),
 	    case ets:lookup(snmpm_user_table, UserId) of
 		[#user{default_agent_config = DefConfig}] ->
-		    ?vtrace("handle_register_agent -> "
-			    "~n   DefConfig: ~p", [DefConfig]),
-		    %% First, insert this users default config
-		    ?vtrace("handle_register_agent -> store default config", []),
-		    do_handle_register_agent(TargetName, DefConfig),
-		    %% Second, insert the config for this agent
-		    ?vtrace("handle_register_agent -> store config", []),
-		    do_handle_register_agent(TargetName, 
-					     [{user_id, UserId}|Config]),
+		    ?vtrace("handle_register_agent ->~n"
+			    "   DefConfig: ~p", [DefConfig]),
+		    FixedConfig =
+			fix_agent_config(ensure_config(DefConfig, Config)),
+		    ?vtrace("handle_register_agent ->~n"
+			    "   FixedConfig: ~p", [FixedConfig]),
+		    do_handle_register_agent(
+		      TargetName, [{user_id, UserId}|FixedConfig]),
 		    %% <DIRTY-BACKWARD-COMPATIBILLITY>
-		    %% And now for some (backward compatibillity) 
+		    %% And now for some (backward compatibillity)
 		    %% dirty crossref stuff
-		    ?vtrace("handle_register_agent -> lookup address", []),
-		    {ok, Addr} = agent_info(TargetName, address),
-		    ?vtrace("handle_register_agent -> Addr: ~p, lookup Port", 
-			    [Addr]),
-		    {ok, Port} = agent_info(TargetName, port),
-		    ?vtrace("handle_register_agent -> register cross-ref fix", []),
-		    ets:insert(snmpm_agent_table, 
-			       {{Addr, Port, target_name}, TargetName}),
+		    {value, {_, Domain}} =
+			lists:keysearch(tdomain, 1, FixedConfig),
+		    {value, {_, Address}} =
+			lists:keysearch(taddress, 1, FixedConfig),
+		    ?vtrace(
+		       "handle_register_agent -> register cross-ref fix", []),
+		    ets:insert(snmpm_agent_table,
+			       {{Domain, Address, target_name}, TargetName}),
 		    %% </DIRTY-BACKWARD-COMPATIBILLITY>
+
+%%		    %% First, insert this users default config
+%%		    ?vtrace("handle_register_agent -> store default config", []),
+%%		    do_handle_register_agent(TargetName, DefConfig),
+%%		    %% Second, insert the config for this agent
+%%		    ?vtrace("handle_register_agent -> store config", []),
+%%		    do_handle_register_agent(TargetName,
+%%					     [{user_id, UserId}|Config]),
+%%		    %% <DIRTY-BACKWARD-COMPATIBILLITY>
+%%		    %% And now for some (backward compatibillity)
+%%		    %% dirty crossref stuff
+%%		    ?vtrace("handle_register_agent -> lookup taddress", []),
+%%		    {ok, {Addr, Port} = TAddress} =
+%%			agent_info(TargetName, taddress),
+%%		    ?vtrace("handle_register_agent -> taddress: ~p",
+%%			    [TAddress]),
+%%		    ?vtrace("handle_register_agent -> register cross-ref fix", []),
+%%		    ets:insert(snmpm_agent_table,
+%%			       {{Addr, Port, target_name}, TargetName}),
+%%		    %% </DIRTY-BACKWARD-COMPATIBILLITY>
 		    ok;
 		_ ->
 		    {error, {not_found, UserId}}
@@ -2708,7 +2848,7 @@ handle_register_agent(UserId, TargetName, Config) ->
 do_handle_register_agent(_TargetName, []) ->
     ok;
 do_handle_register_agent(TargetName, [{Item, Val}|Rest]) ->
-    ?vtrace("handle_register_agent -> entry with"
+    ?vtrace("do_handle_register_agent -> entry with"
 	    "~n   TargetName: ~p"
 	    "~n   Item:       ~p"
 	    "~n   Val:        ~p"
@@ -2717,7 +2857,7 @@ do_handle_register_agent(TargetName, [{Item, Val}|Rest]) ->
 	ok ->
 	    do_handle_register_agent(TargetName, Rest);
 	{error, Reason} ->
-	    ?vtrace("handle_register_agent -> failed updating ~p"
+	    ?vtrace("do_handle_register_agent -> failed updating ~p"
 		    "~n   Item:   ~p"
 		    "~n   Reason: ~p", [Item, Reason]),
 	    ets:match_delete(snmpm_agent_table, {TargetName, '_'}),
@@ -2741,9 +2881,9 @@ handle_unregister_agent(UserId, TargetName) ->
 	    %% <DIRTY-BACKWARD-COMPATIBILLITY>
 	    %% And now for some (backward compatibillity) 
 	    %% dirty crossref stuff
-	    {ok, Addr} = agent_info(TargetName, address),
-	    {ok, Port} = agent_info(TargetName, port),
-	    ets:delete(snmpm_agent_table, {Addr, Port, target_name}),
+	    {ok, Domain} = agent_info(TargetName, tdomain),
+	    {ok, Address} = agent_info(TargetName, taddress),
+	    ets:delete(snmpm_agent_table, {Domain, Address, target_name}),
 	    %% </DIRTY-BACKWARD-COMPATIBILLITY>
 	    ets:match_delete(snmpm_agent_table, {{TargetName, '_'}, '_'}),
 	    ok;
@@ -2769,21 +2909,26 @@ handle_update_agent_info(UserId, TargetName, Info) ->
 	    Error
     end.
 
-handle_update_agent_info(TargetName, Info0) ->
+handle_update_agent_info(TargetName, Info) ->
     ?vtrace("handle_update_agent_info -> entry with"
 	    "~n   TargetName: ~p"
-	    "~n   Info0:      ~p", [TargetName, Info0]),
+	    "~n   Info:      ~p", [TargetName, Info]),
     %% Verify info
-    try verify_agent_info(TargetName, Info0) of
-	{ok, Info} -> 
-	    do_update_agent_info(TargetName, Info);
+    try
+	verify_illegal(Info, [user_id]),
+	%% If port or domain is part of the info, then use it.
+	%% If not, lookup what is already stored for
+	%% this agent and use that.
+	do_update_agent_info(
+	  TargetName,
+	  fix_agent_config(
+	    verify_agent_config(
+	      ensure_agent_info(TargetName, [port,tdomain], Info))))
+    catch
 	Error ->
-	    Error
-    catch 
-	throw:Error ->
 	    Error;
 	T:E ->
-	    {error, {failed_info_verification, Info0, T, E}}
+	    {error, {failed_info_verification, Info, T, E}}
     end.
 
 handle_update_agent_info(UserId, TargetName, Item, Val) ->
@@ -2795,6 +2940,9 @@ handle_update_agent_info(UserId, TargetName, Item, Val) ->
     handle_update_agent_info(TargetName, [{Item, Val}]).
 
 do_update_agent_info(TargetName, Info) ->
+    ?vtrace("do_update_agent_info -> entry with~n"
+	    "   TargetName: ~p~n"
+	    "   Info:       ~p", [TargetName,Info]),
     InsertItem = 
 	fun({Item, Val}) -> 
 		ets:insert(snmpm_agent_table, {{TargetName, Item}, Val})
@@ -2976,109 +3124,42 @@ verify_mandatory(Conf, [Mand|Mands]) ->
 	true ->
 	    verify_mandatory(Conf, Mands);
 	false ->
-	    throw({error, {missing_mandatory_config, Mand}})
+	    error({missing_mandatory_config, Mand})
     end.
 
-verify_invalid(_, []) ->
+verify_illegal(_, []) ->
     ok;
-verify_invalid(Conf, [Inv|Invs]) ->
+verify_illegal(Conf, [Inv|Invs]) ->
     case lists:member(Inv, Conf) of
 	false ->
-	    verify_invalid(Conf, Invs);
+	    verify_illegal(Conf, Invs);
 	true ->
-	    throw({error, {illegal_config, Inv}})
+	    error({illegal_config, Inv})
     end.
 
-
-verify_val(user_id, UserId) ->
-    {ok, UserId};
-verify_val(reg_type, RegType) 
-  when (RegType =:= addr_port) orelse (RegType =:= target_name) ->
-    {ok, RegType};
-verify_val(tdomain = Item, snmpUDPDomain = _Domain) ->
-    verify_val(Item, transportDomainUdpIpv4);
-verify_val(tdomain, Domain) ->
-    case lists:member(Domain, ?SUPPORTED_DOMAINS) of
+verify_someof(Conf, [Mand|Mands]) ->
+    case lists:keymember(Mand, 1, Conf) of
 	true ->
-	    {ok, Domain};
+	    ok;
 	false ->
-	    case lists:member(Domain, snmp_conf:all_domains()) of
-		true ->
-		    error({unsupported_domain, Domain});
-		false ->
-		    error({unknown_domain, Domain})
+	    case Mands of
+		[] ->
+		    error({missing_mandatory_config, Mand});
+		_ ->
+		    verify_someof(Conf, Mands)
 	    end
-    end;
-verify_val(address, {Domain, Addr0}) ->
-    case normalize_address(Domain, Addr0) of
-	{_A1, _A2, _A3, _A4} = Addr ->
-	    {ok, Addr};
-	{_A1, _A2, _A3, _A4, _A5, _A6, _A7, _A8} = Addr ->
-	    {ok, Addr};
-	_ when is_list(Addr0) ->
-	    case (catch snmp_conf:check_ip(Addr0)) of
-		ok ->
-		    {ok, list_to_tuple(Addr0)};
-		Err ->
-		    Err
-	    end;
-	_ ->
-	    error({bad_address, Addr0})
-    end;
-verify_val(address, BadAddress) ->
-    error({bad_address, BadAddress});
-verify_val(port, Port) ->
-    case (catch snmp_conf:check_integer(Port, {gt, 0})) of
-	ok ->
-	    {ok, Port};
-	Err ->
-	    Err
-    end;
-verify_val(community, Comm) ->
-    case (catch snmp_conf:check_string(Comm)) of
-	ok ->
-	    {ok, Comm};
-	Err ->
-	    Err
-    end;
-verify_val(engine_id, discovery = EngineId) ->
-    {ok, EngineId};
-verify_val(engine_id, EngineId) ->
-    case (catch snmp_conf:check_string(EngineId)) of
-	ok ->
-	    {ok, EngineId};
-	Err ->
-	    Err
-    end;
-verify_val(timeout, Timeout) ->
-    (catch snmp_conf:check_timer(Timeout));
-verify_val(max_message_size, MMS) ->
-    case (catch snmp_conf:check_packet_size(MMS)) of
-	ok ->
-	    {ok, MMS};
-	Err ->
-	    Err
-    end;
-verify_val(version, V) 
-  when (V =:= v1) orelse (V =:= v2) orelse (V =:= v3) ->
-    {ok, V};
-verify_val(version, BadVersion) ->
-    error({bad_version, BadVersion});
-verify_val(sec_model, Model) ->
-    (catch snmp_conf:check_sec_model(Model));
-verify_val(sec_name, Name) when is_list(Name) ->
-    case (catch snmp_conf:check_string(Name)) of
-	ok ->
-	    {ok, Name};
-	Err ->
-	    Err
-    end;
-verify_val(sec_name, BadName) ->
-    error({bad_sec_name, BadName});
-verify_val(sec_level, Level) ->
-    (catch snmp_conf:check_sec_level(Level));
-verify_val(Item, _) ->
-    {error, {unknown_item, Item}}.
+    end.
+
+ensure_config([], Config) ->
+    Config;
+ensure_config([Default|Defaults], Config) ->
+    case lists:keymember(element(1, Default), 1, Config) of
+	true ->
+	    ensure_config(Defaults, Config);
+	false ->
+	    ensure_config(Defaults, [Default|Config])
+    end.
+
 
 
 %%%-------------------------------------------------------------------
@@ -3236,31 +3317,14 @@ init_mini_mib_elems(MibName, [_|T], Res) ->
 
 %%----------------------------------------------------------------------
 
-normalize_address(Addr) ->
-    normalize_address(snmpUDPDomain, Addr).
-
-normalize_address(snmpUDPDomain, Addr) ->
-    normalize_address(transportDomainUdpIpv4, Addr);
-
-normalize_address(Domain, Addr) ->
-    case inet:getaddr(Addr, td2fam(Domain)) of
-        {ok, Addr2} ->
-            Addr2;
-        _ when is_list(Addr) ->
-	    case (catch snmp_conf:check_ip(Domain, Addr)) of
-		ok ->
-		    list_to_tuple(Addr);
-		_ ->
-		    Addr
-	    end;
-	_ ->
-            Addr
+fix_address(Domain, Address) ->
+    case snmp_conf:check_address(Domain, Address) of
+	ok ->
+	    Address;
+	{ok, NAddress} ->
+	    NAddress
     end.
 
-td2fam(transportDomainUdpIpv4) -> inet;
-td2fam(transportDomainUdpIpv6) -> inet6.
-    
-
 %%----------------------------------------------------------------------
 
 call(Req) ->
@@ -3370,4 +3434,3 @@ error_msg(F, A) ->
 
 %% p(F, A) ->
 %%     io:format("~w:" ++ F ++ "~n", [?MODULE | A]).
-
diff --git a/lib/snmp/src/manager/snmpm_internal.hrl b/lib/snmp/src/manager/snmpm_internal.hrl
index 53ad41c6b0..e917206f13 100644
--- a/lib/snmp/src/manager/snmpm_internal.hrl
+++ b/lib/snmp/src/manager/snmpm_internal.hrl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/manager/snmpm_misc_sup.erl b/lib/snmp/src/manager/snmpm_misc_sup.erl
index 1a5d7676df..6ff82b322b 100644
--- a/lib/snmp/src/manager/snmpm_misc_sup.erl
+++ b/lib/snmp/src/manager/snmpm_misc_sup.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/manager/snmpm_mpd.erl b/lib/snmp/src/manager/snmpm_mpd.erl
index 953c94ab54..191dc2c281 100644
--- a/lib/snmp/src/manager/snmpm_mpd.erl
+++ b/lib/snmp/src/manager/snmpm_mpd.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2015. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
@@ -21,7 +22,7 @@
 
 -export([init/1, 
 
-	 process_msg/7,
+	 process_msg/7, process_msg/6,
 	 generate_msg/5, generate_response_msg/4,
 
 	 next_msg_id/0, 
@@ -67,8 +68,9 @@
 %%%-----------------------------------------------------------------
 init(Vsns) ->
     ?vdebug("init -> entry with ~p", [Vsns]),
-    {A,B,C} = erlang:now(),
-    random:seed(A,B,C),
+    random:seed(erlang:phash2([node()]),
+                erlang:monotonic_time(),
+                erlang:unique_integer()),
     snmpm_config:cre_counter(msg_id, random:uniform(2147483647)),
     snmpm_config:cre_counter(req_id, random:uniform(2147483647)),
     init_counters(),
@@ -92,8 +94,10 @@ reset(#state{v3 = V3}) ->
 %% Purpose: This is the main Message Dispatching function. (see
 %%          section 4.2.1 in rfc2272)
 %%-----------------------------------------------------------------
-process_msg(Msg, Domain, Addr, Port, State, NoteStore, Logger) ->
+process_msg(Msg, Domain, Ip, Port, State, NoteStore, Logger) ->
+    process_msg(Msg, Domain, {Ip, Port}, State, NoteStore, Logger).
 
+process_msg(Msg, Domain, Addr, State, NoteStore, Logger) ->
     inc(snmpInPkts),
 
     case (catch snmp_pdus:dec_message_only(binary_to_list(Msg))) of
@@ -102,17 +106,17 @@ process_msg(Msg, Domain, Addr, Port, State, NoteStore, Logger) ->
 	#message{version = 'version-1', vsn_hdr = Community, data = Data} 
 	  when State#state.v1 =:= true ->
 	    HS = ?empty_msg_size + length(Community),
-	    process_v1_v2c_msg('version-1', NoteStore, Msg, 
-			       Domain, Addr, Port, 
-			       Community, Data, HS, Logger);
+	    process_v1_v2c_msg(
+	      'version-1', NoteStore, Msg, Domain, Addr,
+	      Community, Data, HS, Logger);
 
 	%% Version 2
 	#message{version = 'version-2', vsn_hdr = Community, data = Data}
 	  when State#state.v2c =:= true ->
 	    HS = ?empty_msg_size + length(Community),
-	    process_v1_v2c_msg('version-2', NoteStore, Msg, 
-			       Domain, Addr, Port, 
-			       Community, Data, HS, Logger);
+	    process_v1_v2c_msg(
+	      'version-2', NoteStore, Msg, Domain, Addr,
+	      Community, Data, HS, Logger);
 	     
 	%% Version 3
 	#message{version = 'version-3', vsn_hdr = H, data = Data}
@@ -122,7 +126,7 @@ process_msg(Msg, Domain, Addr, Port, State, NoteStore, Logger) ->
 		"~n   msgFlags:    ~p"
 		"~n   msgSecModel: ~p",
 		[H#v3_hdr.msgID,H#v3_hdr.msgFlags,H#v3_hdr.msgSecurityModel]),
-	    process_v3_msg(NoteStore, Msg, H, Data, Addr, Port, Logger);
+	    process_v3_msg(NoteStore, Msg, H, Data, Addr, Logger);
 
 	%% Crap
 	{'EXIT', {bad_version, Vsn}} ->
@@ -148,32 +152,27 @@ process_msg(Msg, Domain, Addr, Port, State, NoteStore, Logger) ->
 %%-----------------------------------------------------------------
 %% Handles a Community based message (v1 or v2c).
 %%-----------------------------------------------------------------
-process_v1_v2c_msg(Vsn, _NoteStore, Msg, Domain, 
-		   Addr, Port, 
-		   Community, Data, HS, Log) ->
+process_v1_v2c_msg(
+  Vsn, _NoteStore, Msg, Domain, Addr, Community, Data, HS, Log) ->
 
     ?vdebug("process_v1_v2c_msg -> entry with"
 	    "~n   Vsn:       ~p"
 	    "~n   Domain:    ~p"
 	    "~n   Addr:      ~p"
-	    "~n   Port:      ~p"
 	    "~n   Community: ~p"
-	    "~n   HS:        ~p", [Vsn, Domain, Addr, Port, Community, HS]),
-    
+	    "~n   HS:        ~p", [Vsn, Domain, Addr, Community, HS]),
+
     {TDomain, TAddress} = 
 	try 
-	    begin
-		TD = snmp_conf:mk_tdomain(Domain), 
-		TA = snmp_conf:mk_taddress(Domain, Addr, Port),
-		{TD, TA}
-	    end
+	    {snmp_conf:mk_tdomain(Domain),
+	     snmp_conf:mk_taddress(Domain, Addr)}
 	catch 
 	    throw:{error, TReason} ->
 		throw({discarded, {badarg, Domain, TReason}})
 	end,
 
     Max      = get_max_message_size(),
-    AgentMax = get_agent_max_message_size(Addr, Port),
+    AgentMax = get_agent_max_message_size(Domain, Addr),
     PduMS    = pdu_ms(Max, AgentMax, HS),
 
     ?vtrace("process_v1_v2c_msg -> PduMS: ~p", [PduMS]),
@@ -213,13 +212,12 @@ sec_model('version-2') -> ?SEC_V2C.
 %% Handles a SNMPv3 Message, following the procedures in rfc2272,
 %% section 4.2 and 7.2
 %%-----------------------------------------------------------------
-process_v3_msg(NoteStore, Msg, Hdr, Data, Addr, Port, Log) ->
+process_v3_msg(NoteStore, Msg, Hdr, Data, Address, Log) ->
+    ?vdebug(
+       "process_v3_msg -> entry with~n"
+       "   Hdr:     ~p~n"
+       "   Address: ~p", [Hdr, Address]),
 
-    ?vdebug("process_v3_msg -> entry with"
-	    "~n   Hdr:  ~p"
-	    "~n   Addr: ~p"
-	    "~n   Port: ~p", [Hdr, Addr, Port]),
-    
     %% 7.2.3
     #v3_hdr{msgID                 = MsgID, 
 	    msgMaxSize            = MMS, 
@@ -352,8 +350,8 @@ process_v3_msg(NoteStore, Msg, Hdr, Data, Addr, Port, Log) ->
 		    %% 4.2.2.1.1 - we don't handle proxys yet => we only 
 		    %% handle CtxEngineID to ourselves
 		    %% Check that we actually know of an agent with this
-		    %% CtxEngineID and Addr/Port
-		    case is_known_engine_id(CtxEngineID, Addr, Port) of
+		    %% CtxEngineID and Address
+		    case is_known_engine_id(CtxEngineID, Address) of
 			true ->
 			    ?vtrace("and the agent EngineID (~p) "
 				    "is know to us", [CtxEngineID]),
@@ -866,14 +864,23 @@ get_max_message_size() ->
     end.
 
 %% The the MMS of the agent
-get_agent_max_message_size(Addr, Port) ->
-    case snmpm_config:get_agent_engine_max_message_size(Addr, Port) of
+get_agent_max_message_size(Domain, Addr) ->
+    case snmpm_config:get_agent_engine_max_message_size(Domain, Addr) of
 	{ok, MMS} ->
 	    MMS;
 	_Error ->
-	    ?vlog("unknown agent: ~w:~w", [Addr, Port]),
+	    ?vlog("unknown agent: ~s",
+		  [snmp_conf:mk_addr_string({Domain, Addr})]),
 	    get_max_message_size()
     end.
+%% get_agent_max_message_size(Addr, Port) ->
+%%     case snmpm_config:get_agent_engine_max_message_size(Addr, Port) of
+%% 	{ok, MMS} ->
+%% 	    MMS;
+%% 	_Error ->
+%% 	    ?vlog("unknown agent: ~w:~w", [Addr, Port]),
+%% 	    get_max_message_size()
+%%     end.
 
 %% Get "our" (manager) engine id
 get_engine_id() ->
@@ -888,17 +895,9 @@ get_engine_id() ->
 get_agent_engine_id(Name) ->
     snmpm_config:get_agent_engine_id(Name).
 
-is_known_engine_id(EngineID, Addr, Port) ->
+is_known_engine_id(EngineID, {Addr, Port}) ->
     snmpm_config:is_known_engine_id(EngineID, Addr, Port).
 
-% get_agent_engine_id(Addr, Port) ->
-%     case snmpm_config:get_agent_engine_id(Addr, Port) of
-% 	{ok, Id} ->
-% 	    Id;
-% 	_Error ->
-% 	    ""
-%     end.
-
 
 %%-----------------------------------------------------------------
 %% Sequence number (msg-id & req-id) functions
diff --git a/lib/snmp/src/manager/snmpm_net_if.erl b/lib/snmp/src/manager/snmpm_net_if.erl
index 4d6bd9aa33..93c987eb0f 100644
--- a/lib/snmp/src/manager/snmpm_net_if.erl
+++ b/lib/snmp/src/manager/snmpm_net_if.erl
@@ -1,23 +1,26 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2015. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
 
+-ifndef(snmpm_net_if_mt).
 -module(snmpm_net_if).
+-endif.
 
 -behaviour(gen_server).
 -behaviour(snmpm_network_interface).
@@ -27,9 +30,9 @@
 -export([
 	 start_link/2, 
 	 stop/1, 
-	 send_pdu/6, % Backward compatibillity
-	 send_pdu/7, % Backward compatibillity
-	 send_pdu/8,
+	 send_pdu/6, % Backward compatibility
+	 send_pdu/7, % Partly backward compatibility
+	 send_pdu/8, % Backward compatibility
 
 	 inform_response/4, 
 
@@ -55,11 +58,11 @@
 %% -define(VMODULE,"NET_IF").
 -include("snmp_verbosity.hrl").
 
--record(state, 
+-record(state,
 	{
 	  server,
 	  note_store,
-	  sock, 
+	  transports = [],
 	  mpd_state,
 	  log,
 	  irb = auto, % auto | {user, integer()}
@@ -67,6 +70,9 @@
 	  filter
 	 }).
 
+-record(transport,
+	{socket,
+	 domain = snmpUDPDomain}).
 
 -define(DEFAULT_FILTER_MODULE, snmpm_net_if_filter).
 -define(DEFAULT_FILTER_OPTS,   [{module, ?DEFAULT_FILTER_MODULE}]).
@@ -99,30 +105,32 @@ start_link(Server, NoteStore) ->
 stop(Pid) ->
     call(Pid, stop).
 
-send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port) ->
-    send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port, ?DEFAULT_EXTRA_INFO).
-
-send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port, ExtraInfo) ->
-    Domain = snmpm_config:default_transport_domain(), 
-    send_pdu(Pid, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo).
+send_pdu(Pid, Pdu, Vsn, MsgData, Domain_or_Ip, Addr_or_Port) ->
+    send_pdu(
+      Pid, Pdu, Vsn, MsgData, Domain_or_Ip, Addr_or_Port, ?DEFAULT_EXTRA_INFO).
 
-send_pdu(Pid, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo) 
+send_pdu(Pid, Pdu, Vsn, MsgData, Domain_or_Ip, Addr_or_Port, ExtraInfo)
   when is_record(Pdu, pdu) ->
-    ?d("send_pdu -> entry with"
-       "~n   Pid:     ~p"
-       "~n   Pdu:     ~p"
-       "~n   Vsn:     ~p"
-       "~n   MsgData: ~p"
-       "~n   Domain:  ~p"
-       "~n   Addr:    ~p"
-       "~n   Port:    ~p", [Pid, Pdu, Vsn, MsgData, Domain, Addr, Port]),
-    cast(Pid, {send_pdu, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo}).
+    ?d("send_pdu -> entry with~n"
+       "   Pid:       ~p~n"
+       "   Pdu:       ~p~n"
+       "   Vsn:       ~p~n"
+       "   MsgData:   ~p~n"
+       "   Domain/IP: ~p~n"
+       "   Addr/Port: ~p",
+       [Pid, Pdu, Vsn, MsgData, Domain_or_Ip, Addr_or_Port]),
+    {Domain, Addr} = address(Domain_or_Ip, Addr_or_Port),
+    cast(Pid, {send_pdu, Pdu, Vsn, MsgData, Domain, Addr, ExtraInfo}).
+
+send_pdu(Pid, Pdu, Vsn, MsgData, Domain, Ip, Port, ExtraInfo) ->
+    send_pdu(Pid, Pdu, Vsn, MsgData, Domain, {Ip, Port}, ExtraInfo).
 
 note_store(Pid, NoteStore) ->
     call(Pid, {note_store, NoteStore}).
 
-inform_response(Pid, Ref, Addr, Port) ->
-    cast(Pid, {inform_response, Ref, Addr, Port}).
+inform_response(Pid, Ref, Domain_or_Ip, Addr_or_Port) ->
+    {Domain, Addr} = address(Domain_or_Ip, Addr_or_Port),
+    cast(Pid, {inform_response, Ref, Domain, Addr}).
 
 info(Pid) ->
     call(Pid, info).
@@ -144,6 +152,64 @@ filter_reset(Pid) ->
 
 
 %%%-------------------------------------------------------------------
+%%% Multi-thread manager
+%%%-------------------------------------------------------------------
+
+-ifdef(snmpm_net_if_mt).
+
+%% This function is called through the macro below to
+%% (in the not multithreaded case) avoid creating the
+%% Failer/4 fun, and to avoid calling the Worker through a fun
+%% (now it shall not be a fun, just a code snippet).
+
+worker(Worker, Failer, #state{log = Log} = State) ->
+    Verbosity = get(verbosity),
+    spawn_opt(
+      fun () ->
+	      try
+		  put(sname, mnifw),
+		  put(verbosity, Verbosity),
+		  NewState =
+		      case do_reopen_log(Log) of
+			  Log ->
+			      State;
+			  NewLog ->
+			      State#state{log = NewLog}
+		      end,
+		  Worker(NewState)
+	      of
+		  Result ->
+		      %% Winds up in handle_info {'DOWN', ...}
+		      erlang:exit({net_if_worker, Result})
+	      catch
+		  Class:Reason ->
+		      %% Winds up in handle_info {'DOWN', ...}
+		      erlang:exit(
+			{net_if_worker, Failer,
+			 Class, Reason, erlang:get_stacktrace()})
+	      end
+      end,
+      [monitor]).
+-define(
+   worker(S, Worker, Failer, State),
+   begin
+       worker(
+	 fun (S) -> begin Worker end end,
+	 begin Failer end,
+	 (State))
+   end).
+
+-else.
+
+-define(
+   worker(S, Worker, _Failer, State),
+   begin (S) = (State), begin Worker end end).
+
+-endif.
+
+
+
+%%%-------------------------------------------------------------------
 %%% Callback functions from gen_server
 %%%-------------------------------------------------------------------
 
@@ -158,12 +224,19 @@ init([Server, NoteStore]) ->
     ?d("init -> entry with"
        "~n   Server:    ~p"
        "~n   NoteStore: ~p", [Server, NoteStore]),
-    case (catch do_init(Server, NoteStore)) of
+    try do_init(Server, NoteStore)
+    catch
 	{error, Reason} ->
-	    {stop, Reason};
-	{ok, State} ->
-	    {ok, State}
+	    {stop, Reason}
     end.
+
+-ifdef(snmpm_net_if_mt).
+%% This should really be protected, but it also needs to
+%% be writable for the worker processes, so...
+-define(inform_table_opts, [set, public, named_table, {keypos, 1}]).
+-else.
+-define(inform_table_opts, [set, protected, named_table, {keypos, 1}]).
+-endif.
 	    
 do_init(Server, NoteStore) ->
     process_flag(trap_exit, true),
@@ -173,18 +246,18 @@ do_init(Server, NoteStore) ->
     process_flag(priority, Prio),
 
     %% -- Create inform request table --
-    ets:new(snmpm_inform_request_table,
-	    [set, protected, named_table, {keypos, 1}]),
+    ets:new(snmpm_inform_request_table, ?inform_table_opts),
 
     %% -- Verbosity -- 
     {ok, Verbosity} = snmpm_config:system_info(net_if_verbosity),
-    put(sname,mnif),
-    put(verbosity,Verbosity),
+    put(sname, mnif),
+    put(verbosity, Verbosity),
     ?vlog("starting", []),
 
     %% -- MPD --
     {ok, Vsns} = snmpm_config:system_info(versions),
     MpdState   = snmpm_mpd:init(Vsns),
+    ?vdebug("MpdState: ~w", [MpdState]),
 
     %% -- Module dependent options --
     {ok, Opts} = snmpm_config:system_info(net_if_options),
@@ -193,14 +266,6 @@ do_init(Server, NoteStore) ->
     {ok, IRB}  = snmpm_config:system_info(net_if_irb), 
     IrGcRef    = irgc_start(IRB), 
 
-    %% -- Socket --
-    SndBuf  = get_opt(Opts, sndbuf,   default),
-    RecBuf  = get_opt(Opts, recbuf,   default),
-    BindTo  = get_opt(Opts, bind_to,  false),
-    NoReuse = get_opt(Opts, no_reuse, false),
-    {ok, Port} = snmpm_config:system_info(port),
-    {ok, Sock} = do_open_port(Port, SndBuf, RecBuf, BindTo, NoReuse),
-
     %% Flow control --
     FilterOpts = get_opt(Opts, filter, []),
     FilterMod  = create_filter(FilterOpts),
@@ -209,77 +274,107 @@ do_init(Server, NoteStore) ->
     %% -- Audit trail log ---
     {ok, ATL} = snmpm_config:system_info(audit_trail_log),
     Log = do_init_log(ATL),
+    ?vdebug("Log: ~w", [Log]),
+
+    {ok, DomainAddresses} = snmpm_config:system_info(transports),
+    ?vdebug("DomainAddresses: ~w",[DomainAddresses]),
+    CommonSocketOpts = common_socket_opts(Opts),
+    BindTo = get_opt(Opts, bind_to,  false),
+    case
+	[begin
+	     {IpPort, SocketOpts} =
+		 socket_params(Domain, Address, BindTo, CommonSocketOpts),
+	     Socket = socket_open(IpPort, SocketOpts),
+	     #transport{socket = Socket, domain = Domain}
+	 end || {Domain, Address} <- DomainAddresses]
+    of
+	[] ->
+	    ?vinfo("No transports configured: ~p", [DomainAddresses]),
+	    throw({error, {no_transports,DomainAddresses}});
+	Transports ->
+	    %% -- Initiate counters ---
+	    init_counters(),
+
+	    %% -- We are done ---
+	    State = #state{
+	      server     = Server,
+	      note_store = NoteStore,
+	      mpd_state  = MpdState,
+	      transports = Transports,
+	      log        = Log,
+	      irb        = IRB,
+	      irgc       = IrGcRef,
+	      filter     = FilterMod},
+	    ?vdebug("started", []),
+	    {ok, State}
+    end.
 
-    %% -- Initiate counters ---
-    init_counters(),
-    
-    %% -- We are done ---
-    State = #state{server     = Server, 
-		   note_store = NoteStore, 
-		   mpd_state  = MpdState,
-		   sock       = Sock, 
-		   log        = Log,
-		   irb        = IRB,
-		   irgc       = IrGcRef,
-		   filter     = FilterMod},
-    ?vdebug("started", []),
-    {ok, State}.
-
-
-%% Open port 
-do_open_port(Port, SendSz, RecvSz, BindTo, NoReuse) ->
-    ?vtrace("do_open_port -> entry with"
-	    "~n   Port:    ~p"
-	    "~n   SendSz:  ~p"
-	    "~n   RecvSz:  ~p"
-	    "~n   BindTo:  ~p"
-	    "~n   NoReuse: ~p", [Port, SendSz, RecvSz, BindTo, NoReuse]),
-    IpOpts1 = bind_to(BindTo),
-    IpOpts2 = no_reuse(NoReuse),
-    IpOpts3 = recbuf(RecvSz),
-    IpOpts4 = sndbuf(SendSz),
-    IpOpts  = [binary | IpOpts1 ++ IpOpts2 ++ IpOpts3 ++ IpOpts4],
-    OpenRes = 
-	case init:get_argument(snmpm_fd) of
-	    {ok, [[FdStr]]} ->
-		Fd = list_to_integer(FdStr),
-		gen_udp:open(0, [{fd, Fd}|IpOpts]);
-	    error ->
-		gen_udp:open(Port, IpOpts)
-	end,
-    case OpenRes of
+socket_open(IpPort, SocketOpts) ->
+    ?vtrace("socket_open -> entry with~n"
+	    "   IpPort:     ~p~n"
+	    "   SocketOpts: ~p", [IpPort, SocketOpts]),
+    case gen_udp:open(IpPort, SocketOpts) of
 	{error, _} = Error ->
 	    throw(Error);
-	OK ->
-	    OK
+	{ok, Socket} ->
+	    Socket
     end.
 
-bind_to(true) ->
-    case snmpm_config:system_info(address) of
-	{ok, Addr} when is_list(Addr) ->
-	    [{ip, list_to_tuple(Addr)}];
-	{ok, Addr} ->
-	    [{ip, Addr}];
+socket_params(Domain, {IpAddr, IpPort} = Addr, BindTo, CommonSocketOpts) ->
+    Family = snmp_conf:tdomain_to_family(Domain),
+    SocketOpts =
+	case Family of
+	    inet6 ->
+		[Family, {ipv6_v6only, true} | CommonSocketOpts];
+	    Family ->
+		[Family | CommonSocketOpts]
+	end,
+    case Family of
+	inet ->
+	    case init:get_argument(snmpm_fd) of
+		{ok, [[FdStr]]} ->
+		    Fd = list_to_integer(FdStr),
+		    case BindTo of
+			true ->
+			    {IpPort, [{ip, IpAddr}, {fd, Fd} | SocketOpts]};
+			_ ->
+			    {0, [{fd, Fd} | SocketOpts]}
+		    end;
+		error ->
+		    socket_params(SocketOpts, Addr, BindTo)
+	    end;
 	_ ->
-	    []
-    end;
-bind_to(_) ->
-    [].
-
-no_reuse(false) ->
-    [{reuseaddr, true}];
-no_reuse(_) ->
-    [].
-
-recbuf(default) ->
-    [];
-recbuf(Sz) ->
-    [{recbuf, Sz}].
+	    socket_params(SocketOpts, Addr, BindTo)
+    end.
+%%
+socket_params(SocketOpts, {IpAddr, IpPort}, BindTo) ->
+    case BindTo of
+	true ->
+	    {IpPort, [{ip, IpAddr} | SocketOpts]};
+	_ ->
+	    {IpPort, SocketOpts}
+    end.
 
-sndbuf(default) ->
-    [];
-sndbuf(Sz) ->
-    [{sndbuf, Sz}].
+common_socket_opts(Opts) ->
+    [binary
+     |   case get_opt(Opts, sndbuf, default) of
+	     default ->
+		 [];
+	     Sz ->
+		 [{sndbuf, Sz}]
+	 end ++
+	 case get_opt(Opts, recbuf, default) of
+	     default ->
+		 [];
+	     Sz ->
+		 [{sndbuf, Sz}]
+	 end ++
+	 case get_opt(Opts, no_reuse, false) of
+	     false ->
+		 [{reuseaddr, true}];
+	     _ ->
+		 []
+	 end].
 
 
 create_filter(Opts) when is_list(Opts) ->
@@ -294,6 +389,10 @@ create_filter(BadOpts) ->
     throw({error, {bad_filter_opts, BadOpts}}).
 
 
+%% ----------------------------------------------------------------------
+%%                         Audit Trail Logger
+%% ----------------------------------------------------------------------
+
 %% Open log
 do_init_log(false) ->
     ?vtrace("do_init_log(false) -> entry", []),
@@ -314,24 +413,69 @@ do_init_log(true) ->
 	    Function = increment_counter, 
 	    Args     = [atl_seqno, Initial, Max], 
 	    SeqNoGen = {Module, Function, Args}, 
-	    case snmp_log:create(Name, File, 
-				 SeqNoGen, Size, Repair, true) of
+	    case snmp_log:create(
+		   Name, File, SeqNoGen, Size, Repair, true) of
 		{ok, Log} ->
 		    ?vdebug("log created: ~w", [Log]),
-		    {Log, Type};
+		    {Name, Log, Type};
 		{error, Reason} ->
 		    throw({error, {failed_create_audit_log, Reason}})
 	    end;
 	_ ->
 	    case snmp_log:create(Name, File, Size, Repair, true) of
 		{ok, Log} ->
-		    {Log, Type};
+		    ?vdebug("log created: ~w", [Log]),
+		    {Name, Log, Type};
 		{error, Reason} ->
 		    throw({error, {failed_create_audit_log, Reason}})
 	    end
     end.
 
-    
+-ifdef(snmpm_net_if_mt).
+do_reopen_log(undefined) ->
+    undefined;
+do_reopen_log({Name, Log, Type}) ->
+    case snmp_log:open(Name, Log) of
+	{ok, NewLog} ->
+	    {Name, NewLog, Type};
+	{error, Reason} ->
+	    warning_msg(
+	      "NetIf worker ~p failed to open ATL:~n"
+	      "   ~p", [self(), Reason]),
+	    undefined
+    end.
+-endif.
+
+%% Close log
+do_close_log(undefined) ->
+    ok;
+do_close_log({_Name, Log, _Type}) ->
+    (catch snmp_log:sync(Log)),
+    (catch snmp_log:close(Log)),
+    ok;
+do_close_log(_) ->
+    ok.
+
+%% Log
+logger(undefined, _Type, _Domain, _Addr) ->
+    fun(_) ->
+	    ok
+    end;
+logger({_Name, Log, Types}, Type, Domain, Addr) ->
+    case lists:member(Type, Types) of
+	true ->
+	    AddrString =
+		iolist_to_binary(snmp_conf:mk_addr_string({Domain, Addr})),
+	    fun(Msg) ->
+		    snmp_log:log(Log, Msg, AddrString)
+	    end;
+	false ->
+	    fun(_) ->
+		    ok
+	    end
+    end.
+
+
 %%--------------------------------------------------------------------
 %% Func: handle_call/3
 %% Returns: {reply, Reply, State}          |
@@ -346,11 +490,6 @@ handle_call({verbosity, Verbosity}, _From, State) ->
     put(verbosity, Verbosity),
     {reply, ok, State};
 
-%% handle_call({system_info_updated, What}, _From, State) ->
-%%     ?vlog("received system_info_updated request with What = ~p", [What]),
-%%     {NewState, Reply} = handle_system_info_updated(State, What),
-%%     {reply, Reply, NewState};
-
 handle_call(get_log_type, _From, State) ->
     ?vlog("received get-log-type request", []),
     Reply = (catch handle_get_log_type(State)),
@@ -386,25 +525,24 @@ handle_call(Req, From, State) ->
 %%          {noreply, State, Timeout} |
 %%          {stop, Reason, State}            (terminate/2 is called)
 %%--------------------------------------------------------------------
-handle_cast({send_pdu, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo}, 
+handle_cast({send_pdu, Pdu, Vsn, MsgData, Domain, Addr, ExtraInfo},
 	    State) ->
-    ?vlog("received send_pdu message with"
-	  "~n   Pdu:     ~p"
-	  "~n   Vsn:     ~p"
-	  "~n   MsgData: ~p"
-	  "~n   Domain:  ~p"
-	  "~n   Addr:    ~p"
-	  "~n   Port:    ~p", [Pdu, Vsn, MsgData, Domain, Addr, Port]),
-    maybe_process_extra_info(ExtraInfo), 
-    maybe_handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, Port, State), 
+    ?vlog("received send_pdu message with~n"
+	  "   Pdu:     ~p~n"
+	  "   Vsn:     ~p~n"
+	  "   MsgData: ~p~n"
+	  "   Domain:  ~p~n"
+	  "   Addr:    ~p", [Pdu, Vsn, MsgData, Domain, Addr]),
+    maybe_process_extra_info(ExtraInfo),
+    maybe_handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, State),
     {noreply, State};
 
-handle_cast({inform_response, Ref, Addr, Port}, State) ->
-    ?vlog("received inform_response message with"
-	  "~n   Ref:  ~p"
-	  "~n   Addr: ~p"
-	  "~n   Port: ~p", [Ref, Addr, Port]),
-    handle_inform_response(Ref, Addr, Port, State), 
+handle_cast({inform_response, Ref, Domain, Addr}, State) ->
+    ?vlog("received inform_response message with~n"
+	  "   Ref:    ~p~n"
+	  "   Domain: ~p~n"
+	  "   Addr:   ~p", [Ref, Domain, Addr]),
+    handle_inform_response(Ref, Domain, Addr, State),
     {noreply, State};
 
 handle_cast(filter_reset, State) ->
@@ -423,10 +561,21 @@ handle_cast(Msg, State) ->
 %%          {noreply, State, Timeout} |
 %%          {stop, Reason, State}            (terminate/2 is called)
 %%--------------------------------------------------------------------
-handle_info({udp, Sock, Ip, Port, Bytes}, #state{sock = Sock} = State) ->
-    ?vlog("received ~w bytes from ~p:~p [~w]", [size(Bytes), Ip, Port, Sock]),
-    maybe_handle_recv_msg(Ip, Port, Bytes, State),
-    {noreply, State};
+handle_info(
+  {udp, Socket, IpAddr, IpPort, Bytes},
+  #state{transports = Transports} = State) ->
+    Size = byte_size(Bytes),
+    case lists:keyfind(Socket, #transport.socket, Transports) of
+	#transport{socket = Socket, domain = Domain} ->
+	    ?vlog("received ~w bytes from ~p:~p [~w]",
+		  [Size, IpAddr, IpPort, Socket]),
+	    maybe_handle_recv_msg(Domain, {IpAddr, IpPort}, Bytes, State),
+	    {noreply, State};
+	false ->
+	    warning_msg("Received ~w bytes on unknown port: ~p from ~s",
+			[Size, Socket, format_address({IpAddr, IpPort})]),
+	    {noreply, State}
+    end;
 
 handle_info(inform_response_gc, State) ->
     ?vlog("received inform_response_gc message", []),
@@ -439,11 +588,42 @@ handle_info({disk_log, _Node, Log, Info}, State) ->
     State2 = handle_disk_log(Log, Info, State),
     {noreply, State2};
 
+handle_info({'DOWN', _, _, _, _} = Info, State) ->
+    handle_info_down(Info, State);
+
 handle_info(Info, State) ->
+    handle_info_unknown(Info, State).
+
+
+handle_info_unknown(Info, State) ->
     warning_msg("received unknown info: ~n~p", [Info]),
     {noreply, State}.
 
 
+-ifdef(snmpm_net_if_mt).
+handle_info_down(
+  {'DOWN', _MRef, process, _Pid,
+   {net_if_worker, _Result}},
+  State) ->
+    ?vdebug("received DOWN message from net_if worker [~w]: "
+	    "~n   Result: ~p", [_Pid, _Result]),
+    {noreply, State};
+handle_info_down(
+  {'DOWN', _MRef, process, Pid,
+   {net_if_worker, Failer, Class, Reason, Stacktrace} = _ExitStatus},
+  State) ->
+    ?vdebug("received DOWN message from net_if worker [~w]: "
+	    "~n   ExitStatus: ~p", [Pid, _ExitStatus]),
+    Failer(Pid, Class, Reason, Stacktrace),
+    {noreply, State};
+handle_info_down(Info, State) ->
+    handle_info_unknown(Info, State).
+-else.
+handle_info_down(Info, State) ->
+    handle_info_unknown(Info, State).
+-endif.
+
+
 %%--------------------------------------------------------------------
 %% Func: terminate/2
 %% Purpose: Shutdown the server
@@ -457,68 +637,12 @@ terminate(Reason, #state{log = Log, irgc = IrGcRef}) ->
     ok.
 
 
-do_close_log({Log, _Type}) ->
-    (catch snmp_log:sync(Log)),
-    (catch snmp_log:close(Log)),
-    ok;
-do_close_log(_) ->
-    ok.
-
-
 %%----------------------------------------------------------------------
 %% Func: code_change/3
 %% Purpose: Convert process state when code is changed
 %% Returns: {ok, NewState}
 %%----------------------------------------------------------------------
  
-code_change({down, _Vsn}, OldState, downgrade_to_pre_4_14) ->
-    ?d("code_change(down, downgrade_to_pre_4_14) -> entry with"
-       "~n   OldState: ~p", [OldState]),
-    #state{server     = Server,
-	   note_store = NoteStore,
-	   sock       = Sock,
-	   mpd_state  = MpdState,
-	   log        = {OldLog, Type}, 
-	   irb        = IRB,
-	   irgc       = IRGC} = OldState, 
-    NewLog = snmp_log:downgrade(OldLog), 
-    State = 
-	{state, Server, NoteStore, Sock, MpdState, {NewLog, Type}, IRB, IRGC},
-    {ok, State};
-
-code_change({down, _Vsn}, OldState, downgrade_to_pre_4_16) ->
-    ?d("code_change(down, downgrade_to_pre_4_16) -> entry with"
-       "~n   OldState: ~p", [OldState]),
-    {OldLog, Type} = OldState#state.log, 
-    NewLog = snmp_log:downgrade(OldLog), 
-    State  = OldState#state{log = {NewLog, Type}}, 
-    {ok, State};
-
-% upgrade
-code_change(_Vsn, OldState, upgrade_from_pre_4_14) ->
-    ?d("code_change(up, upgrade_from_pre_4_14) -> entry with"
-       "~n   OldState: ~p", [OldState]), 
-    {state, Server, NoteStore, Sock, MpdState, {OldLog, Type}, IRB, IRGC} = 
-	OldState,
-    NewLog = snmp_log:upgrade(OldLog), 
-    State = #state{server     = Server,
-		   note_store = NoteStore,
-		   sock       = Sock,
-		   mpd_state  = MpdState,
-		   log        = {NewLog, Type}, 
-		   irb        = IRB,
-		   irgc       = IRGC,
-		   filter     = ?DEFAULT_FILTER_MODULE},
-    {ok, State};
-
-code_change(_Vsn, OldState, upgrade_from_pre_4_16) ->
-    ?d("code_change(up, upgrade_from_pre_4_16) -> entry with"
-       "~n   OldState: ~p", [OldState]),
-    {OldLog, Type} = OldState#state.log,
-    NewLog = snmp_log:upgrade(OldLog), 
-    State  = OldState#state{log = {NewLog, Type}}, 
-    {ok, State};
-
 code_change(_Vsn, State, _Extra) ->
     ?d("code_change -> entry with"
        "~n   Vsn:   ~p"
@@ -531,139 +655,155 @@ code_change(_Vsn, State, _Extra) ->
 %%% Internal functions
 %%%-------------------------------------------------------------------
 
-maybe_handle_recv_msg(Addr, Port, Bytes, #state{filter = FilterMod} = State) ->
-    case (catch FilterMod:accept_recv(Addr, Port)) of
+maybe_handle_recv_msg(Domain, Addr, Bytes, State) ->
+    ?worker(
+       S, maybe_handle_recv_msg_mt(Domain, Addr, Bytes, S),
+       fun (Pid, Class, Reason, Stacktrace) ->
+	       warning_msg(
+		 "Worker process (~p) terminated "
+		 "while processing (incomming) message from %s:~n"
+		 "~w:~w at ~p",
+		 [Pid, snmp_conf:mk_addr_string({Domain, Addr}),
+		  Class, Reason, Stacktrace])
+       end,
+       State).
+
+maybe_handle_recv_msg_mt(
+  Domain, Addr, Bytes,
+  #state{filter = FilterMod, transports = Transports} = State) ->
+    {Arg1, Arg2} = fix_filter_address(Transports, {Domain, Addr}),
+    case (catch FilterMod:accept_recv(Arg1, Arg2)) of
 	false ->
 	    %% Drop the received packet 
-	    inc(netIfMsgInDrops),
-	    ok;
+	    inc(netIfMsgInDrops);
 	_ ->
-	    handle_recv_msg(Addr, Port, Bytes, State)
-    end.
+	    handle_recv_msg(Domain, Addr, Bytes, State)
+    end,
+    ok.
     
 
-handle_recv_msg(Addr, Port, Bytes, #state{server = Pid}) 
+handle_recv_msg(Domain, Addr, Bytes, #state{server = Pid})
   when is_binary(Bytes) andalso (size(Bytes) =:= 0) ->
-    Pid ! {snmp_error, {empty_message, Addr, Port}, Addr, Port},
-    ok;
-
-handle_recv_msg(Addr, Port, Bytes, 
-		#state{server     = Pid, 
-		       note_store = NoteStore, 
-		       mpd_state  = MpdState, 
-		       sock       = Sock,
-		       log        = Log} = State) ->
-    Domain = snmp_conf:which_domain(Addr), % What the ****...
-    Logger = logger(Log, read, Addr, Port),
-    case (catch snmpm_mpd:process_msg(Bytes, Domain, Addr, Port, 
-				      MpdState, NoteStore, Logger)) of
+    Pid ! {snmp_error, {empty_message, Domain, Addr}, Domain, Addr};
+%%
+handle_recv_msg(
+  Domain, Addr, Bytes,
+  #state{
+	  server     = Pid,
+	  note_store = NoteStore,
+	  mpd_state  = MpdState,
+	  log        = Log} = State) ->
+    Logger = logger(Log, read, Domain, Addr),
+    case (catch snmpm_mpd:process_msg(
+		  Bytes, Domain, Addr, MpdState, NoteStore, Logger)) of
 
 	{ok, Vsn, Pdu, MS, ACM} ->
-	    maybe_handle_recv_pdu(Addr, Port, Vsn, Pdu, MS, ACM, 
-				  Logger, State);
+	    maybe_handle_recv_pdu(
+	      Domain, Addr, Vsn, Pdu, MS, ACM, Logger, State);
 
 	{discarded, Reason, Report} ->
 	    ?vdebug("discarded: ~p", [Reason]),
 	    ErrorInfo = {failed_processing_message, Reason},
-	    Pid ! {snmp_error, ErrorInfo, Addr, Port},
-	    maybe_udp_send(State#state.filter, Sock, Addr, Port, Report),
-	    ok;
+	    Pid ! {snmp_error, ErrorInfo, Domain, Addr},
+	    maybe_udp_send(Domain, Addr, Report, State);
 
 	{discarded, Reason} ->
 	    ?vdebug("discarded: ~p", [Reason]),
 	    ErrorInfo = {failed_processing_message, Reason},
-	    Pid ! {snmp_error, ErrorInfo, Addr, Port},
-	    ok;
+	    Pid ! {snmp_error, ErrorInfo, Domain, Addr};
 
 	Error ->
 	    error_msg("processing of received message failed: "
-		      "~n   ~p", [Error]),
-	    ok
+		      "~n   ~p", [Error])
     end.
 
 
-maybe_handle_recv_pdu(Addr, Port, 
-		      Vsn, #pdu{type = Type} = Pdu, PduMS, ACM, 
-		      Logger, 
-		      #state{filter = FilterMod} = State) ->
-    case (catch FilterMod:accept_recv_pdu(Addr, Port, Type)) of
+maybe_handle_recv_pdu(
+  Domain, Addr, Vsn, #pdu{type = Type} = Pdu, PduMS, ACM, Logger,
+  #state{filter = FilterMod, transports = Transports} = State) ->
+    {Arg1, Arg2} = fix_filter_address(Transports, {Domain, Addr}),
+    case (catch FilterMod:accept_recv_pdu(Arg1, Arg2, Type)) of
 	false ->
-	    inc(netIfPduInDrops),
-	    ok;
+	    inc(netIfPduInDrops);
 	_ ->
-	    handle_recv_pdu(Addr, Port, Vsn, Pdu, PduMS, ACM, Logger, State)
+	    handle_recv_pdu(
+	      Domain, Addr, Vsn, Pdu, PduMS, ACM, Logger, State)
     end;
-maybe_handle_recv_pdu(Addr, Port, Vsn, Trap, PduMS, ACM, Logger, 
-		      #state{filter = FilterMod} = State) 
+maybe_handle_recv_pdu(
+  Domain, Addr, Vsn, Trap, PduMS, ACM, Logger,
+  #state{filter = FilterMod, transports = Transports} = State)
   when is_record(Trap, trappdu) ->
-    case (catch FilterMod:accept_recv_pdu(Addr, Port, trappdu)) of
+    {Arg1, Arg2} = fix_filter_address(Transports, {Domain, Addr}),
+    case (catch FilterMod:accept_recv_pdu(Arg1, Arg2, trappdu)) of
 	false ->
-	    inc(netIfPduInDrops),
-	    ok;
+	    inc(netIfPduInDrops);
 	_ ->
-	    handle_recv_pdu(Addr, Port, Vsn, Trap, PduMS, ACM, Logger, State)
+	    handle_recv_pdu(
+	      Domain, Addr, Vsn, Trap, PduMS, ACM, Logger, State)
     end;
-maybe_handle_recv_pdu(Addr, Port, Vsn, Pdu, PduMS, ACM, Logger, State) ->
-    handle_recv_pdu(Addr, Port, Vsn, Pdu, PduMS, ACM, Logger, State).
-
-
-handle_recv_pdu(Addr, Port, 
-		Vsn, #pdu{type = 'inform-request'} = Pdu, _PduMS, ACM, 
-		Logger, #state{server = Pid, irb = IRB} = State) ->
-    handle_inform_request(IRB, Pid, Vsn, Pdu, ACM, 
-			  Addr, Port, Logger, State);
-handle_recv_pdu(Addr, Port, 
-		_Vsn, #pdu{type = report} = Pdu, _PduMS, ok, 
-		_Logger, 
-		#state{server = Pid} = _State) ->
+maybe_handle_recv_pdu(
+  Domain, Addr, Vsn, Pdu, PduMS, ACM, Logger, State) ->
+    handle_recv_pdu(Domain, Addr, Vsn, Pdu, PduMS, ACM, Logger, State).
+
+
+handle_recv_pdu(
+  Domain, Addr, Vsn,
+  #pdu{type = 'inform-request'} = Pdu, _PduMS, ACM, Logger,
+  #state{server = Pid, irb = IRB} = State) ->
+    handle_inform_request(
+      IRB, Pid, Vsn, Pdu, ACM, Domain, Addr, Logger, State);
+handle_recv_pdu(
+  Domain, Addr, _Vsn,
+  #pdu{type = report} = Pdu, _PduMS, ok, _Logger,
+  #state{server = Pid} = _State) ->
     ?vtrace("received report - ok", []),
-    Pid ! {snmp_report, {ok, Pdu}, Addr, Port};
-handle_recv_pdu(Addr, Port, 
-		_Vsn, #pdu{type = report} = Pdu, _PduMS, 
-		{error, ReqId, Reason}, 
-		_Logger, 
-		#state{server = Pid} = _State) ->
+    Pid ! {snmp_report, {ok, Pdu}, Domain, Addr};
+handle_recv_pdu(
+  Domain, Addr, _Vsn,
+  #pdu{type = report} = Pdu, _PduMS, {error, ReqId, Reason}, _Logger,
+  #state{server = Pid} = _State) ->
     ?vtrace("received report - error", []),
-    Pid ! {snmp_report, {error, ReqId, Reason, Pdu}, Addr, Port};
-handle_recv_pdu(Addr, Port, 
-		_Vsn, #pdu{type = 'snmpv2-trap'} = Pdu, _PduMS, _ACM, 
-		_Logger, 
-		#state{server = Pid} = _State) ->
+    Pid ! {snmp_report, {error, ReqId, Reason, Pdu}, Domain, Addr};
+handle_recv_pdu(
+  Domain, Addr, _Vsn,
+  #pdu{type = 'snmpv2-trap'} = Pdu, _PduMS, _ACM, _Logger,
+  #state{server = Pid} = _State) ->
     ?vtrace("received snmpv2-trap", []),
-    Pid ! {snmp_trap, Pdu, Addr, Port};
-handle_recv_pdu(Addr, Port, 
-		_Vsn, Trap, _PduMS, _ACM, 
-		_Logger, 
-		#state{server = Pid} = _State) when is_record(Trap, trappdu) ->
+    Pid ! {snmp_trap, Pdu, Domain, Addr};
+handle_recv_pdu(
+  Domain, Addr, _Vsn, Trap, _PduMS, _ACM, _Logger,
+  #state{server = Pid} = _State) when is_record(Trap, trappdu) ->
     ?vtrace("received trappdu", []),
-    Pid ! {snmp_trap, Trap, Addr, Port};
-handle_recv_pdu(Addr, Port, 
-		_Vsn, Pdu, _PduMS, _ACM, 
-		_Logger, 
-		#state{server = Pid} = _State) when is_record(Pdu, pdu) ->
+    Pid ! {snmp_trap, Trap, Domain, Addr};
+handle_recv_pdu(
+  Domain, Addr, _Vsn, Pdu, _PduMS, _ACM, _Logger,
+  #state{server = Pid} = _State) when is_record(Pdu, pdu) ->
     ?vtrace("received pdu", []),
-    Pid ! {snmp_pdu, Pdu, Addr, Port};
-handle_recv_pdu(_Addr, _Port, _Vsn, Pdu, _PduMS, ACM, _Logger, _State) ->
+    Pid ! {snmp_pdu, Pdu, Domain, Addr};
+handle_recv_pdu(
+  _Domain, _Addr, _Vsn, Pdu, _PduMS, ACM, _Logger, _State) ->
     ?vlog("received unexpected pdu: "
-	    "~n   Pdu: ~p"
-	    "~n   ACM: ~p", [Pdu, ACM]).
+	  "~n   Pdu: ~p"
+	  "~n   ACM: ~p", [Pdu, ACM]).
 
 
-handle_inform_request(auto, Pid, Vsn, Pdu, ACM, Addr, Port, Logger, State) ->
+handle_inform_request(
+  auto, Pid, Vsn, Pdu, ACM, Domain, Addr, Logger, State) ->
     ?vtrace("received inform-request (true)", []),
-    Pid ! {snmp_inform, ignore, Pdu, Addr, Port},
+    Pid ! {snmp_inform, ignore, Pdu, Domain, Addr},
     RePdu = make_response_pdu(Pdu),
-    maybe_send_inform_response(RePdu, Vsn, ACM, Addr, Port, Logger, State);
-handle_inform_request({user, To}, Pid, Vsn, #pdu{request_id = ReqId} = Pdu, 
-		      ACM, Addr, Port, _Logger, _State) ->
+    maybe_send_inform_response(RePdu, Vsn, ACM, Domain, Addr, Logger, State);
+handle_inform_request(
+  {user, To}, Pid, Vsn, #pdu{request_id = ReqId} = Pdu, 
+  ACM, Domain, Addr, _Logger, _State) ->
     ?vtrace("received inform-request (false)", []),
 
-    Pid ! {snmp_inform, ReqId, Pdu, Addr, Port},
+    Pid ! {snmp_inform, ReqId, Pdu, Domain, Addr},
 
     %% Before we go any further, we need to check that we have not
     %% already received this message (possible resend).
 
-    Key = {ReqId, Addr, Port},
+    Key = {ReqId, Domain, Addr},
     case ets:lookup(snmpm_inform_request_table, Key) of
 	[_] ->
 	    %% OK, we already know about this.  We assume this
@@ -672,50 +812,67 @@ handle_inform_request({user, To}, Pid, Vsn, #pdu{request_id = ReqId} = Pdu,
 	    ok;
 	[] ->
 	    RePdu  = make_response_pdu(Pdu),
-	    Expire = t() + To, 
+	    Expire = snmp_misc:now(ms) + To,
 	    Rec    = {Key, Expire, {Vsn, ACM, RePdu}},
 	    ets:insert(snmpm_inform_request_table, Rec)
     end.
-	    
-handle_inform_response(Ref, Addr, Port, State) ->
-    Key = {Ref, Addr, Port},
+
+handle_inform_response(Ref, Domain, Addr, State) ->
+    ?worker(
+       S, handle_inform_response_mt(Ref, Domain, Addr, S),
+       fun (Pid, Class, Reason, Stacktrace) ->
+	       warning_msg(
+		 "Worker process (~p) terminated "
+		 "while processing (outgoing) inform response for %s:~n"
+		 "~w:~w at ~p",
+		 [Pid, snmp_conf:mk_addr_string({Domain, Addr}),
+		  Class, Reason, Stacktrace])
+       end,
+       State).
+
+handle_inform_response_mt(Ref, Domain, Addr, State) ->
+    Key = {Ref, Domain, Addr},
     case ets:lookup(snmpm_inform_request_table, Key) of
 	[{Key, _, {Vsn, ACM, RePdu}}] ->
-	    Logger = logger(State#state.log, read, Addr, Port),
+	    Logger = logger(State#state.log, read, Domain, Addr),
 	    ets:delete(snmpm_inform_request_table, Key), 
-	    maybe_send_inform_response(RePdu, Vsn, ACM, Addr, Port, 
-				       Logger, State);
+	    maybe_send_inform_response(
+	      RePdu, Vsn, ACM, Domain, Addr, Logger, State);
 	[] ->
 	    %% Already acknowledged, or the user was to slow to reply...
 	    ok
     end,
     ok.
 
-maybe_send_inform_response(RePdu, Vsn, ACM, Addr, Port, Logger, 
-			   #state{server = Pid, 
-				  sock   = Sock, 
-				  filter = FilterMod}) ->
-    case (catch FilterMod:accept_send_pdu(Addr, Port, pdu_type_of(RePdu))) of
+maybe_send_inform_response(
+  RePdu, Vsn, ACM, Domain, Addr, Logger,
+  #state{
+	  server = Pid,
+	  filter = FilterMod,
+	  transports = Transports} = State) ->
+    {Arg1, Arg2} = fix_filter_address(Transports, {Domain, Addr}),
+    case (catch FilterMod:accept_send_pdu(
+		  Arg1, Arg2, pdu_type_of(RePdu)))
+    of
 	false ->
 	    inc(netIfPduOutDrops),
 	    ok;
 	_ ->
 	    case snmpm_mpd:generate_response_msg(Vsn, RePdu, ACM, Logger) of
 		{ok, Msg} ->
-		    maybe_udp_send(FilterMod, Sock, Addr, Port, Msg);
+		    maybe_udp_send(Domain, Addr, Msg, State);
 		{discarded, Reason} ->
 		    ?vlog("failed generating response message:"
 			  "~n   Reason: ~p", [Reason]),
 		    ReqId     = RePdu#pdu.request_id,
 		    ErrorInfo = {failed_generating_response, {RePdu, Reason}},
-		    Pid ! {snmp_error, ReqId, ErrorInfo, Addr, Port},
-		    ok
+		    Pid ! {snmp_error, ReqId, ErrorInfo, Domain, Addr}
 	    end
     end.
     
 handle_inform_response_gc(#state{irb = IRB} = State) ->
     ets:safe_fixtable(snmpm_inform_request_table, true),
-    do_irgc(ets:first(snmpm_inform_request_table), t()),
+    do_irgc(ets:first(snmpm_inform_request_table), snmp_misc:now(ms)),
     ets:safe_fixtable(snmpm_inform_request_table, false),
     State#state{irgc = irgc_start(IRB)}.
 
@@ -742,64 +899,99 @@ irgc_stop(undefined) ->
 irgc_stop(Ref) ->
     (catch erlang:cancel_timer(Ref)).
 
-
-maybe_handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, Port, 
-		      #state{filter = FilterMod} = State) ->
-    case (catch FilterMod:accept_send_pdu(Addr, Port, pdu_type_of(Pdu))) of
+maybe_handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, State) ->
+    ?worker(
+       S, maybe_handle_send_pdu_mt(Pdu, Vsn, MsgData, Domain, Addr, S),
+       fun (Pid, Class, Reason, Stacktrace) ->
+	       warning_msg(
+		 "Worker process (~p) terminated "
+		 "while processing (outgoing) pdu for %s:~n"
+		 "~w:~w at ~p",
+		 [Pid, snmp_conf:mk_addr_string({Domain, Addr}),
+		  Class, Reason, Stacktrace])
+       end,
+       State).
+
+maybe_handle_send_pdu_mt(
+  Pdu, Vsn, MsgData, Domain, Addr,
+  #state{filter = FilterMod, transports = Transports} = State) ->
+    {Arg1, Arg2} = fix_filter_address(Transports, {Domain, Addr}),
+    case (catch FilterMod:accept_send_pdu(Arg1, Arg2, pdu_type_of(Pdu))) of
 	false ->
-	    inc(netIfPduOutDrops),
-	    ok;
+	    inc(netIfPduOutDrops);
 	_ ->
-	    handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, Port, State)
-    end.
+	    handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, State)
+    end,
+    ok.
 
-handle_send_pdu(Pdu, Vsn, MsgData, _Domain, Addr, Port, 
-		#state{server     = Pid, 
-		       note_store = NoteStore, 
-		       sock       = Sock, 
-		       log        = Log,
-		       filter     = FilterMod}) ->
-    Logger = logger(Log, write, Addr, Port),
-    case (catch snmpm_mpd:generate_msg(Vsn, NoteStore, 
-				       Pdu, MsgData, Logger)) of
+handle_send_pdu(
+  Pdu, Vsn, MsgData, Domain, Addr,
+  #state{
+	  server     = Pid,
+	  note_store = NoteStore,
+	  log        = Log} = State) ->
+    Logger = logger(Log, write, Domain, Addr),
+    case (catch snmpm_mpd:generate_msg(
+		  Vsn, NoteStore, Pdu, MsgData, Logger)) of
 	{ok, Msg} ->
 	    ?vtrace("handle_send_pdu -> message generated", []),
-	    maybe_udp_send(FilterMod, Sock, Addr, Port, Msg);	    
+	    maybe_udp_send(Domain, Addr, Msg, State);
 	{discarded, Reason} ->
 	    ?vlog("PDU not sent: "
 		  "~n   PDU:    ~p"
 		  "~n   Reason: ~p", [Pdu, Reason]),
-	    Pid ! {snmp_error, Pdu, Reason},
-	    ok
+	    Pid ! {snmp_error, Pdu, Reason}
     end.
 
 
-maybe_udp_send(FilterMod, Sock, Addr, Port, Msg) ->
-    case (catch FilterMod:accept_send(Addr, Port)) of
+maybe_udp_send(
+  Domain, Addr, Msg,
+  #state{filter = FilterMod, transports = Transports}) ->
+    To = {Domain, Addr},
+    {Arg1, Arg2} = fix_filter_address(Transports, To),
+    case (catch FilterMod:accept_send(Arg1, Arg2)) of
 	false ->
 	    inc(netIfMsgOutDrops),
 	    ok;
 	_ ->
-	    udp_send(Sock, Addr, Port, Msg)
+	    case select_transport_from_domain(Domain, Transports) of
+		false ->
+		    error_msg(
+		      "Can not find transport~n"
+			"   size:   ~p~n"
+		      "   to:     ~s",
+		      [sz(Msg), format_address(To)]);
+		#transport{socket = Socket} ->
+		    udp_send(Socket, Addr, Msg)
+	    end
     end.
-	    
-    
-udp_send(Sock, Addr, Port, Msg) ->
-    case (catch gen_udp:send(Sock, Addr, Port, Msg)) of
+
+udp_send(Sock, To, Msg) ->
+    {IpAddr, IpPort} =
+	case To of
+	    {Domain, Addr} when is_atom(Domain) ->
+		Addr;
+	    {_, P} = Addr when is_integer(P) ->
+		Addr
+	end,
+    try gen_udp:send(Sock, IpAddr, IpPort, Msg) of
 	ok ->
 	    ?vdebug("sent ~w bytes to ~w:~w [~w]", 
-		    [sz(Msg), Addr, Port, Sock]),
+		    [sz(Msg), IpAddr, IpPort, Sock]),
 	    ok;
 	{error, Reason} ->
-	    error_msg("failed sending message to ~p:~p: "
-		      "~n   ~p",[Addr, Port, Reason]);
-	Error ->
-	    error_msg("failed sending message to ~p:~p: "
-		      "~n   ~p",[Addr, Port, Error])
+	    error_msg("failed sending message to ~p:~p:~n"
+		      "   ~p",[IpAddr, IpPort, Reason])
+    catch
+	error:Error ->
+	    error_msg("failed sending message to ~p:~p:~n"
+		      "   error:~p~n"
+		      "   ~p",
+		      [IpAddr, IpPort, Error, erlang:get_stacktrace()])
     end.
 
 sz(B) when is_binary(B) ->
-    size(B);
+    byte_size(B);
 sz(L) when is_list(L) ->
     length(L);
 sz(_) ->
@@ -827,110 +1019,6 @@ handle_disk_log(_Log, _Info, State) ->
     State.
 
 
-%% mk_discovery_msg('version-3', Pdu, _VsnHdr, UserName) ->
-%%     ScopedPDU = #scopedPdu{contextEngineID = "",
-%% 			   contextName = "",
-%% 			   data = Pdu},
-%%     Bytes = snmp_pdus:enc_scoped_pdu(ScopedPDU),
-%%     MsgID = get(msg_id),
-%%     put(msg_id,MsgID+1),
-%%     UsmSecParams = 
-%% 	#usmSecurityParameters{msgAuthoritativeEngineID = "",
-%% 			       msgAuthoritativeEngineBoots = 0,
-%% 			       msgAuthoritativeEngineTime = 0,
-%% 			       msgUserName = UserName,
-%% 			       msgPrivacyParameters = "",
-%% 			       msgAuthenticationParameters = ""},
-%%     SecBytes = snmp_pdus:enc_usm_security_parameters(UsmSecParams),
-%%     PduType = Pdu#pdu.type,
-%%     Hdr = #v3_hdr{msgID = MsgID, 
-%% 		  msgMaxSize = 1000,
-%% 		  msgFlags = snmp_misc:mk_msg_flags(PduType, 0),
-%% 		  msgSecurityModel = ?SEC_USM,
-%% 		  msgSecurityParameters = SecBytes},
-%%     Msg = #message{version = 'version-3', vsn_hdr = Hdr, data = Bytes},
-%%     case (catch snmp_pdus:enc_message_only(Msg)) of
-%% 	{'EXIT', Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	L when list(L) ->
-%% 	    {Msg, L}
-%%     end;
-%% mk_discovery_msg(Version, Pdu, {Com, _, _, _, _}, UserName) ->
-%%     Msg = #message{version = Version, vsn_hdr = Com, data = Pdu},
-%%     case catch snmp_pdus:enc_message(Msg) of
-%% 	{'EXIT', Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	L when list(L) -> 
-%% 	    {Msg, L}
-%%     end.
-
-
-%% mk_msg('version-3', Pdu, {Context, User, EngineID, CtxEngineId, SecLevel}, 
-%%        MsgData) ->
-%%     %% Code copied from snmp_mpd.erl
-%%     {MsgId, SecName, SecData} =
-%% 	if
-%% 	    tuple(MsgData), Pdu#pdu.type == 'get-response' ->
-%% 		MsgData;
-%% 	    true -> 
-%% 		Md = get(msg_id),
-%% 		put(msg_id, Md + 1),
-%% 		{Md, User, []}
-%% 	end,
-%%     ScopedPDU = #scopedPdu{contextEngineID = CtxEngineId,
-%% 			   contextName = Context,
-%% 			   data = Pdu},
-%%     ScopedPDUBytes = snmp_pdus:enc_scoped_pdu(ScopedPDU),
-
-%%     PduType = Pdu#pdu.type,
-%%     V3Hdr = #v3_hdr{msgID      = MsgId,
-%% 		    msgMaxSize = 1000,
-%% 		    msgFlags   = snmp_misc:mk_msg_flags(PduType, SecLevel),
-%% 		    msgSecurityModel = ?SEC_USM},
-%%     Message = #message{version = 'version-3', vsn_hdr = V3Hdr,
-%% 		       data = ScopedPDUBytes},
-%%     SecEngineID = case PduType of
-%% 		      'get-response' -> snmp_framework_mib:get_engine_id();
-%% 		      _ -> EngineID
-%% 		  end,
-%%     case catch snmp_usm:generate_outgoing_msg(Message, SecEngineID,
-%% 					      SecName, SecData, SecLevel) of
-%% 	{'EXIT', Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	{error, Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	Packet ->
-%% 	    Packet
-%%     end;
-%% mk_msg(Version, Pdu, {Com, _User, _EngineID, _Ctx, _SecLevel}, _SecData) ->
-%%     Msg = #message{version = Version, vsn_hdr = Com, data = Pdu},
-%%     case catch snmp_pdus:enc_message(Msg) of
-%% 	{'EXIT', Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	B when list(B) -> 
-%% 	    B
-%%     end.
-
-
-%% handle_system_info_updated(#state{log = {Log, _OldType}} = State, 
-%% 			   audit_trail_log_type = _What) ->
-%%     %% Just to make sure, check that ATL is actually enabled
-%%     case snmpm_config:system_info(audit_trail_log) of
-%% 	{ok, true} ->
-%% 	    {ok, Type} = snmpm_config:system_info(audit_trail_log_type),
-%% 	    NewState = State#state{log = {Log, Type}},
-%% 	    {NewState, ok};
-%% 	_ ->
-%% 	    {State, {error, {adt_not_enabled}}}
-%%     end;
-%% handle_system_info_updated(_State, _What) ->
-%%     ok.
-
 handle_get_log_type(#state{log = {_Log, Value}} = State) ->
     %% Just to make sure, check that ATL is actually enabled
     case snmpm_config:system_info(audit_trail_log) of
@@ -989,6 +1077,45 @@ handle_set_log_type(State, _NewType) ->
     {State, {error, not_enabled}}.
 
 
+select_transport_from_domain(Domain, Transports) when is_atom(Domain) ->
+    Pos = #transport.domain,
+    case lists:keyfind(Domain, Pos, Transports) of
+	#transport{domain = Domain} = Transport ->
+	    Transport;
+	false when Domain == snmpUDPDomain ->
+	    lists:keyfind(transportDomainUdpIpv4, Pos, Transports);
+	false when Domain == transportDomainUdpIpv4 ->
+	    lists:keyfind(snmpUDPDomain, Pos, Transports);
+	false ->
+	    false
+    end.
+
+%% If the manager uses legacy snmpUDPDomain e.g has not set
+%% {domain, _}, then make sure snmpm_network_interface_filter
+%% gets legacy arguments to not break backwards compatibility.
+%%
+fix_filter_address(Transports, Address) ->
+    DefaultDomain = snmpm_config:default_transport_domain(),
+    case Transports of
+	[#transport{domain = DefaultDomain}, DefaultDomain] ->
+	    case Address of
+		{Domain, Addr} when is_atom(Domain) ->
+		    Addr;
+		{_, IpPort} = Addr when is_integer(IpPort) ->
+		    Addr
+	    end;
+	_ ->
+	    Address
+    end.
+
+address(Domain, Addr) when is_atom(Domain) ->
+    {Domain, Addr};
+address(Ip, Port) when is_integer(Port) ->
+    {snmpm_config:default_transport_domain(), {Ip, Port}}.
+
+format_address(Address) ->
+    iolist_to_binary(snmp_conf:mk_addr_string(Address)).
+
 %% -------------------------------------------------------------------
 
 make_response_pdu(#pdu{request_id = ReqId, varbinds = Vbs}) ->
@@ -1022,32 +1149,6 @@ maybe_process_extra_info(_ExtraInfo) ->
 
 %% -------------------------------------------------------------------
 
-t() ->
-    {A,B,C} = erlang:now(),
-    A*1000000000+B*1000+(C div 1000).
-
-
-%% -------------------------------------------------------------------
-
-logger(undefined, _Type, _Addr, _Port) ->
-    fun(_) ->
-	    ok
-    end;
-logger({Log, Types}, Type, Addr, Port) ->
-    case lists:member(Type, Types) of
-	true ->
-	    fun(Msg) ->
-		    snmp_log:log(Log, Msg, Addr, Port)
-	    end;
-	false ->
-	    fun(_) ->
-		    ok
-	    end
-    end.
-
-
-%% -------------------------------------------------------------------
-
 %% info_msg(F, A) ->
 %%     ?snmpm_info("NET-IF server: " ++ F, A).
 
@@ -1072,10 +1173,11 @@ get_opt(Opts, Key, Def) ->
 
 %% -------------------------------------------------------------------
 
-get_info(#state{sock = Id}) ->
+get_info(#state{transports = Transports}) ->
     ProcSize = proc_mem(self()),
-    PortInfo = get_port_info(Id),
-    [{process_memory, ProcSize}, {port_info, PortInfo}].
+    [{process_memory, ProcSize}
+     | [{port_info, get_port_info(Socket)}
+	|| #transport{socket = Socket} <- Transports]].
 
 proc_mem(P) when is_pid(P) ->
     case (catch erlang:process_info(P, memory)) of
@@ -1084,8 +1186,6 @@ proc_mem(P) when is_pid(P) ->
 	_ ->
 	    undefined
     end.
-%% proc_mem(_) ->
-%%     undefined.
 
 
 get_port_info(Id) ->
@@ -1165,20 +1265,6 @@ counters() ->
 inc(Name)    -> inc(Name, 1).
 inc(Name, N) -> snmpm_config:incr_stats_counter(Name, N).
 
-%% get_counters() ->
-%%     Counters = counters(),
-%%     get_counters(Counters, []).
-
-%% get_counters([], Acc) ->
-%%     lists:reverse(Acc);
-%% get_counters([Counter|Counters], Acc) ->
-%%     case snmpm_config:get_stats_counter(Counter) of
-%%         {ok, CounterVal} ->
-%%             get_counters(Counters, [{Counter, CounterVal}|Acc]);
-%%         _ ->
-%%             get_counters(Counters, Acc)
-%%     end.
-
 
 %% ----------------------------------------------------------------
 
@@ -1190,4 +1276,3 @@ call(Pid, Req, Timeout) ->
 
 cast(Pid, Msg) ->
     gen_server:cast(Pid, Msg).
-
diff --git a/lib/snmp/src/manager/snmpm_net_if_filter.erl b/lib/snmp/src/manager/snmpm_net_if_filter.erl
index eb0c6efb11..e5aef0756b 100644
--- a/lib/snmp/src/manager/snmpm_net_if_filter.erl
+++ b/lib/snmp/src/manager/snmpm_net_if_filter.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2009. All Rights Reserved.
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
@@ -25,29 +26,51 @@
 
 -include("snmp_debug.hrl").
 
-accept_recv(_Addr, _Port) ->
-    ?d("accept_recv -> entry with"
-       "~n   Addr: ~p"
-       "~n   Port: ~p", [_Addr, _Port]),
+accept_recv(Domain, _Address) when is_atom(Domain) ->
+    ?d("accept_recv -> entry with~n"
+       "   Domain:  ~p~n"
+       "   Address: ~p", [Domain, _Address]),
+    true;
+accept_recv(_Addr, Port) when is_integer(Port) ->
+    ?d("accept_recv -> entry with~n"
+       "   Addr: ~p~n"
+       "   Port: ~p", [_Addr, Port]),
     true.
 
-accept_send(_Addr, _Port) ->
-    ?d("accept_send -> entry with"
-       "~n   Addr: ~p"
-       "~n   Port: ~p", [_Addr, _Port]),
+accept_send(Domain, _Address) when is_atom(Domain) ->
+    ?d("accept_send -> entry with~n"
+       "   Domain:  ~p~n"
+       "   Address: ~p", [Domain, _Address]),
+    true;
+accept_send(_Addr, Port) when is_integer(Port) ->
+    ?d("accept_send -> entry with~n"
+       "   Addr: ~p~n"
+       "   Port: ~p", [_Addr, Port]),
     true.
 
-accept_recv_pdu(_Addr, _Port, _PduType) ->
-    ?d("accept_recv_pdu -> entry with"
-       "~n   Addr: ~p"
-       "~n   Port: ~p"
-       "~n   PduType: ~p", [_Addr, _Port, _PduType]),
+accept_recv_pdu(Domain, _Address, _PduType) when is_atom(Domain) ->
+    ?d("accept_recv_pdu -> entry with~n"
+       "   Domain:  ~p~n"
+       "   Address: ~p~n"
+       "   PduType: ~p", [Domain, _Address, _PduType]),
+    true;
+accept_recv_pdu(_Addr, Port, _PduType) when is_integer(Port) ->
+    ?d("accept_recv_pdu -> entry with~n"
+       "   Addr: ~p~n"
+       "   Port: ~p~n"
+       "   PduType: ~p", [_Addr, Port, _PduType]),
     true.
 
-accept_send_pdu(_Addr, _Port, _PduType) ->
-    ?d("accept_send_pdu -> entry with"
-       "~n   Addr:    ~p"
-       "~n   Port:    ~p"
-       "~n   PduType: ~p", [_Addr, _Port, _PduType]),
+accept_send_pdu(Domain, _Address, _PduType) when is_atom(Domain) ->
+    ?d("accept_send_pdu -> entry with~n"
+       "   Domain:  ~p~n"
+       "   Address: ~p~n"
+       "   PduType: ~p", [Domain, _Address, _PduType]),
+    true;
+accept_send_pdu(_Addr, Port, _PduType) when is_integer(Port) ->
+    ?d("accept_send_pdu -> entry with~n"
+       "   Addr:    ~p~n"
+       "   Port:    ~p~n"
+       "   PduType: ~p", [_Addr, Port, _PduType]),
     true.
 
diff --git a/lib/snmp/src/manager/snmpm_net_if_mt.erl b/lib/snmp/src/manager/snmpm_net_if_mt.erl
index 3e87f6a7fb..238e212e14 100644
--- a/lib/snmp/src/manager/snmpm_net_if_mt.erl
+++ b/lib/snmp/src/manager/snmpm_net_if_mt.erl
@@ -1,1259 +1,24 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
 
--module(snmpm_net_if_mt).
-
--behaviour(gen_server).
--behaviour(snmpm_network_interface).
-
-
-%% Network Interface callback functions
--export([
-	 start_link/2, 
-	 stop/1, 
-	 send_pdu/6, % Backward compatibillity
-	 send_pdu/7, % Backward compatibillity
-	 send_pdu/8,
-
-	 inform_response/4, 
-
-	 note_store/2, 
-
-	 info/1, 
- 	 verbosity/2, 
- 	 %% system_info_updated/2, 
- 	 get_log_type/1, set_log_type/2,
-	 filter_reset/1
-	]).
-
-%% gen_server callbacks
--export([init/1, handle_call/3, handle_cast/2, handle_info/2, 
-	 code_change/3, terminate/2]).
-
--define(SNMP_USE_V3, true).
--include("snmp_types.hrl").
--include("snmpm_internal.hrl").
--include("snmpm_atl.hrl").
--include("snmp_debug.hrl").
-
-%% -define(VMODULE,"NET_IF").
--include("snmp_verbosity.hrl").
-
--record(state, 
-	{
-	  server,
-	  note_store,
-	  sock, 
-	  mpd_state,
-	  log, 
-	  irb = auto, % auto | {user, integer()}
-	  irgc,
-	  filter
-	 }).
-
-
--define(DEFAULT_FILTER_MODULE, snmpm_net_if_filter).
--define(DEFAULT_FILTER_OPTS,   [{module, ?DEFAULT_FILTER_MODULE}]).
-
--ifdef(snmp_debug).
--define(GS_START_LINK(Args),
-	gen_server:start_link(?MODULE, Args, [{debug,[trace]}])).
--else.
--define(GS_START_LINK(Args),
-	gen_server:start_link(?MODULE, Args, [])).
--endif.
-
-
--define(IRGC_TIMEOUT, timer:minutes(5)).
-
--define(ATL_SEQNO_INITIAL, 1).
--define(ATL_SEQNO_MAX,     2147483647).
-
-
-%%%-------------------------------------------------------------------
-%%% API
-%%%-------------------------------------------------------------------
-start_link(Server, NoteStore) ->
-    ?d("start_link -> entry with"
-       "~n   Server:    ~p"
-       "~n   NoteStore: ~p", [Server, NoteStore]),
-    Args = [Server, NoteStore], 
-    ?GS_START_LINK(Args).
-
-stop(Pid) ->
-    call(Pid, stop).
-
-send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port) ->
-    send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port, ?DEFAULT_EXTRA_INFO).
-
-send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port, ExtraInfo) ->
-    Domain = snmpm_config:default_transport_domain(), 
-    send_pdu(Pid, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo).
-
-send_pdu(Pid, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo) 
-  when is_record(Pdu, pdu) ->
-    ?d("send_pdu -> entry with"
-       "~n   Pid:     ~p"
-       "~n   Pdu:     ~p"
-       "~n   Vsn:     ~p"
-       "~n   MsgData: ~p"
-       "~n   Domain:  ~p"
-       "~n   Addr:    ~p"
-       "~n   Port:    ~p", [Pid, Pdu, Vsn, MsgData, Domain, Addr, Port]),
-    cast(Pid, {send_pdu, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo}).
-
-note_store(Pid, NoteStore) ->
-    call(Pid, {note_store, NoteStore}).
-
-inform_response(Pid, Ref, Addr, Port) ->
-    cast(Pid, {inform_response, Ref, Addr, Port}).
-
-info(Pid) ->
-    call(Pid, info).
-
-verbosity(Pid, V) ->
-    call(Pid, {verbosity, V}).
-
-%% system_info_updated(Pid, What) ->
-%%     call(Pid, {system_info_updated, What}).
-
-get_log_type(Pid) ->
-    call(Pid, get_log_type).
-
-set_log_type(Pid, NewType) ->
-    call(Pid, {set_log_type, NewType}).
-
-filter_reset(Pid) ->
-    cast(Pid, filter_reset).
-
-
-%%%-------------------------------------------------------------------
-%%% Callback functions from gen_server
-%%%-------------------------------------------------------------------
-
-%%--------------------------------------------------------------------
-%% Func: init/1
-%% Returns: {ok, State}          |
-%%          {ok, State, Timeout} |
-%%          ignore               |
-%%          {stop, Reason}
-%%--------------------------------------------------------------------
-init([Server, NoteStore]) -> 
-    ?d("init -> entry with"
-       "~n   Server:    ~p"
-       "~n   NoteStore: ~p", [Server, NoteStore]),
-    case (catch do_init(Server, NoteStore)) of
-	{error, Reason} ->
-	    {stop, Reason};
-	{ok, State} ->
-	    {ok, State}
-    end.
-	    
-do_init(Server, NoteStore) ->
-    process_flag(trap_exit, true),
-
-    %% -- Prio --
-    {ok, Prio} = snmpm_config:system_info(prio),
-    process_flag(priority, Prio),
-
-    %% -- Create inform request table --
-    %% This should really be protected, but it also needs to 
-    %% be writable for the worker processes, so...
-    ets:new(snmpm_inform_request_table,
-	    [set, public, named_table, {keypos, 1}]),
-
-    %% -- Verbosity -- 
-    {ok, Verbosity} = snmpm_config:system_info(net_if_verbosity),
-    put(sname,     mnif),
-    put(verbosity, Verbosity),
-    ?vlog("starting", []),
-
-    %% -- MPD --
-    {ok, Vsns} = snmpm_config:system_info(versions),
-    MpdState   = snmpm_mpd:init(Vsns),
-    ?vdebug("MpdState: ~w", [MpdState]),
-
-    %% -- Module dependent options --
-    {ok, Opts} = snmpm_config:system_info(net_if_options),
-
-    %% -- Inform response behaviour --
-    {ok, IRB}  = snmpm_config:system_info(net_if_irb), 
-    IrGcRef    = irgc_start(IRB), 
-
-    %% -- Socket --
-    SndBuf  = get_opt(Opts, sndbuf,       default),
-    RecBuf  = get_opt(Opts, recbuf,       default),
-    BindTo  = get_opt(Opts, bind_to,      false),
-    NoReuse = get_opt(Opts, no_reuse,     false),
-    {ok, Port} = snmpm_config:system_info(port),
-    {ok, Sock} = do_open_port(Port, SndBuf, RecBuf, BindTo, NoReuse),
-
-    %% Flow control --
-    FilterOpts = get_opt(Opts, filter, []),
-    FilterMod  = create_filter(FilterOpts),
-    ?vdebug("FilterMod: ~w", [FilterMod]),
-
-    %% -- Audit trail log ---
-    {ok, ATL} = snmpm_config:system_info(audit_trail_log),
-    Log = do_init_log(ATL),
-    ?vdebug("Log: ~w", [Log]),
-
-    %% -- Initiate counters ---
-    init_counters(),
-    
-    %% -- We are done ---
-    State = #state{server     = Server, 
-		   note_store = NoteStore, 
-		   mpd_state  = MpdState,
-		   sock       = Sock, 
-		   log        = Log,
-		   irb        = IRB,
-		   irgc       = IrGcRef,
-		   filter     = FilterMod},
-    ?vdebug("started", []),
-    {ok, State}.
-
-
-%% Open port 
-do_open_port(Port, SendSz, RecvSz, BindTo, NoReuse) ->
-    ?vtrace("do_open_port -> entry with"
-	    "~n   Port:    ~p"
-	    "~n   SendSz:  ~p"
-	    "~n   RecvSz:  ~p"
-	    "~n   BindTo:  ~p"
-	    "~n   NoReuse: ~p", [Port, SendSz, RecvSz, BindTo, NoReuse]),
-    IpOpts1 = bind_to(BindTo),
-    IpOpts2 = no_reuse(NoReuse),
-    IpOpts3 = recbuf(RecvSz),
-    IpOpts4 = sndbuf(SendSz),
-    IpOpts  = [binary | IpOpts1 ++ IpOpts2 ++ IpOpts3 ++ IpOpts4],
-    OpenRes = 
-	case init:get_argument(snmpm_fd) of
-	    {ok, [[FdStr]]} ->
-		Fd = list_to_integer(FdStr),
-		gen_udp:open(0, [{fd, Fd}|IpOpts]);
-	    error ->
-		gen_udp:open(Port, IpOpts)
-	end,
-    case OpenRes of
-	{error, _} = Error ->
-	    throw(Error);
-	OK ->
-	    OK
-    end.
-
-bind_to(true) ->
-    case snmpm_config:system_info(address) of
-	{ok, Addr} when is_list(Addr) ->
-	    [{ip, list_to_tuple(Addr)}];
-	{ok, Addr} ->
-	    [{ip, Addr}];
-	_ ->
-	    []
-    end;
-bind_to(_) ->
-    [].
-
-no_reuse(false) ->
-    [{reuseaddr, true}];
-no_reuse(_) ->
-    [].
-
-recbuf(default) ->
-    [];
-recbuf(Sz) ->
-    [{recbuf, Sz}].
-
-sndbuf(default) ->
-    [];
-sndbuf(Sz) ->
-    [{sndbuf, Sz}].
-
-
-create_filter(Opts) when is_list(Opts) ->
-    case get_opt(Opts, module, ?DEFAULT_FILTER_MODULE) of
-	?DEFAULT_FILTER_MODULE = Mod ->
-	    Mod;
-	Module ->
-	    snmpm_network_interface_filter:verify(Module),
-	    Module
-    end;
-create_filter(BadOpts) ->
-    throw({error, {bad_filter_opts, BadOpts}}).
-
-
-%% ----------------------------------------------------------------------
-%%                         Audit Trail Logger
-%% ----------------------------------------------------------------------
-
-%% Open log
-do_init_log(false) ->
-    ?vtrace("do_init_log(false) -> entry", []),
-    undefined;
-do_init_log(true) ->
-    ?vtrace("do_init_log(true) -> entry", []),
-    {ok, Type}   = snmpm_config:system_info(audit_trail_log_type),
-    {ok, Dir}    = snmpm_config:system_info(audit_trail_log_dir),
-    {ok, Size}   = snmpm_config:system_info(audit_trail_log_size),
-    {ok, Repair} = snmpm_config:system_info(audit_trail_log_repair),
-    Name         = ?audit_trail_log_name, 
-    File         = filename:absname(?audit_trail_log_file, Dir),
-    case snmpm_config:system_info(audit_trail_log_seqno) of
-	{ok, true} ->
-	    Initial  = ?ATL_SEQNO_INITIAL,
-	    Max      = ?ATL_SEQNO_MAX, 
-	    Module   = snmpm_config, 
-	    Function = increment_counter, 
-	    Args     = [atl_seqno, Initial, Max], 
-	    SeqNoGen = {Module, Function, Args}, 
-	    case snmp_log:create(Name, File, SeqNoGen, Size, Repair, true) of
-		{ok, Log} ->
-		    ?vdebug("log created: ~w", [Log]),
-		    {Name, Log, Type};
-		{error, Reason} ->
-		    throw({error, {failed_create_audit_log, Reason}})
-	    end;
-	_ ->
-	    case snmp_log:create(Name, File, Size, Repair, true) of
-		{ok, Log} ->
-		    ?vdebug("log created: ~w", [Log]),
-		    {Name, Log, Type};
-		{error, Reason} ->
-		    throw({error, {failed_create_audit_log, Reason}})
-	    end
-    end.
-
-
-%% ----------------------------------------------------------------------
-    
-%%--------------------------------------------------------------------
-%% Func: handle_call/3
-%% Returns: {reply, Reply, State}          |
-%%          {reply, Reply, State, Timeout} |
-%%          {noreply, State}               |
-%%          {noreply, State, Timeout}      |
-%%          {stop, Reason, Reply, State}   | (terminate/2 is called)
-%%          {stop, Reason, State}            (terminate/2 is called)
-%%--------------------------------------------------------------------
-handle_call({verbosity, Verbosity}, _From, State) ->
-    ?vlog("received verbosity request", []),
-    put(verbosity, Verbosity),
-    {reply, ok, State};
-
-%% handle_call({system_info_updated, What}, _From, State) ->
-%%     ?vlog("received system_info_updated request with What = ~p", [What]),
-%%     {NewState, Reply} = handle_system_info_updated(State, What),
-%%     {reply, Reply, NewState};
-
-handle_call(get_log_type, _From, State) ->
-    ?vlog("received get-log-type request", []),
-    Reply = (catch handle_get_log_type(State)),
-    {reply, Reply, State};
-
-handle_call({set_log_type, NewType}, _From, State) ->
-    ?vlog("received set-log-type request with NewType = ~p", [NewType]),
-    {NewState, Reply} = (catch handle_set_log_type(State, NewType)),
-    {reply, Reply, NewState};
-
-handle_call({note_store, Pid}, _From, State) ->
-    ?vlog("received new note_store: ~w", [Pid]),
-    {reply, ok, State#state{note_store = Pid}};
-
-handle_call(stop, _From, State) ->
-    ?vlog("received stop request", []),
-    Reply = ok,
-    {stop, normal, Reply, State};
-
-handle_call(info, _From, State) ->
-    ?vlog("received info request", []),
-    Reply = get_info(State),
-    {reply, Reply, State};
-
-handle_call(Req, From, State) ->
-    warning_msg("received unknown request (from ~p): ~n~p", [Req, From]),
-    {reply, {error, {invalid_request, Req}}, State}.
-
-
-%%--------------------------------------------------------------------
-%% Func: handle_cast/2
-%% Returns: {noreply, State}          |
-%%          {noreply, State, Timeout} |
-%%          {stop, Reason, State}            (terminate/2 is called)
-%%--------------------------------------------------------------------
-handle_cast({send_pdu, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo}, 
-	    State) ->
-    ?vlog("received send_pdu message with"
-	  "~n   Pdu:     ~p"
-	  "~n   Vsn:     ~p"
-	  "~n   MsgData: ~p"
-	  "~n   Domain:  ~p"
-	  "~n   Addr:    ~p"
-	  "~n   Port:    ~p", [Pdu, Vsn, MsgData, Domain, Addr, Port]),
-    maybe_process_extra_info(ExtraInfo), 
-    handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, Port, State), 
-    {noreply, State};
-
-handle_cast({inform_response, Ref, Addr, Port}, State) ->
-    ?vlog("received inform_response message with"
-	  "~n   Ref:  ~p"
-	  "~n   Addr: ~p"
-	  "~n   Port: ~p", [Ref, Addr, Port]),
-    handle_inform_response(Ref, Addr, Port, State), 
-    {noreply, State};
-
-handle_cast(filter_reset, State) ->
-    ?vlog("received filter_reset message", []),
-    reset_counters(),
-    {noreply, State};
-
-handle_cast(Msg, State) ->
-    warning_msg("received unknown message: ~n~p", [Msg]),
-    {noreply, State}.
-
-
-%%--------------------------------------------------------------------
-%% Func: handle_info/2
-%% Returns: {noreply, State}          |
-%%          {noreply, State, Timeout} |
-%%          {stop, Reason, State}            (terminate/2 is called)
-%%--------------------------------------------------------------------
-handle_info({udp, Sock, Ip, Port, Bytes}, #state{sock = Sock} = State) ->
-    ?vlog("received ~w bytes from ~p:~p", [size(Bytes), Ip, Port]),
-    handle_udp(Ip, Port, Bytes, State),
-    {noreply, State};
-
-handle_info(inform_response_gc, State) ->
-    ?vlog("received inform_response_gc message", []),
-    State2 = handle_inform_response_gc(State),
-    {noreply, State2};
-
-handle_info({disk_log, _Node, Log, Info}, State) ->
-    ?vlog("received disk_log message: "
-	  "~n   Info: ~p", [Info]),
-    State2 = handle_disk_log(Log, Info, State),
-    {noreply, State2};
-
-handle_info({'DOWN', _MRef, process, Pid, {net_if_worker, ExitStatus}}, 
-	    State) ->
-    ?vdebug("received DOWN message from net_if-worker: "
-	    "~n   ExitStatus: ~p", [ExitStatus]),
-    handle_worker_exit(Pid, ExitStatus),
-    {noreply, State};
-
-handle_info(Info, State) ->
-    warning_msg("received unknown info: ~n~p", [Info]),
-    {noreply, State}.
-
-
-%%--------------------------------------------------------------------
-%% Func: terminate/2
-%% Purpose: Shutdown the server
-%% Returns: any (ignored by gen_server)
-%%--------------------------------------------------------------------
-terminate(Reason, #state{log = Log, irgc = IrGcRef}) ->
-    ?vdebug("terminate: ~p", [Reason]),
-    irgc_stop(IrGcRef),
-    %% Close logs
-    do_close_log(Log),
-    ok.
-
-
-do_close_log({Log, _Type}) ->
-    (catch snmp_log:sync(Log)),
-    (catch snmp_log:close(Log)),
-    ok;
-do_close_log(_) ->
-    ok.
-
-
-%%----------------------------------------------------------------------
-%% Func: code_change/3
-%% Purpose: Convert process state when code is changed
-%% Returns: {ok, NewState}
-%%----------------------------------------------------------------------
- 
-code_change(_Vsn, State, _Extra) ->
-    ?d("code_change -> entry with"
-       "~n   Vsn:   ~p"
-       "~n   State: ~p"
-       "~n   Extra: ~p", [_Vsn, State, _Extra]),
-    {ok, State}.
-
- 
-%%%-------------------------------------------------------------------
-%%% Internal functions
-%%%-------------------------------------------------------------------
-
-handle_udp(Addr, Port, Bytes, State) ->
-    Verbosity = get(verbosity), 
-    spawn_opt(fun() -> 
-		      Log = worker_init(State, Verbosity), 
-		      Res = (catch maybe_handle_recv_msg(
-				     Addr, Port, Bytes, 
-				     State#state{log = Log})),
-		      worker_exit(udp, {Addr, Port}, Res)
-	      end, 
-	      [monitor]).
-    
-
-maybe_handle_recv_msg(Addr, Port, Bytes, #state{filter = FilterMod} = State) ->
-    case (catch FilterMod:accept_recv(Addr, Port)) of
-	false ->
-	    %% Drop the received packet 
-	    inc(netIfMsgInDrops),
-	    ok;
-	_ ->
-	    handle_recv_msg(Addr, Port, Bytes, State)
-    end.
-    
-
-handle_recv_msg(Addr, Port, Bytes, #state{server = Pid}) 
-  when is_binary(Bytes) andalso (size(Bytes) =:= 0) ->
-    Pid ! {snmp_error, {empty_message, Addr, Port}, Addr, Port},
-    ok;
-
-handle_recv_msg(Addr, Port, Bytes, 
-		#state{server     = Pid, 
-		       note_store = NoteStore, 
-		       mpd_state  = MpdState, 
-		       sock       = Sock,
-		       log        = Log} = State) ->
-    Domain = snmp_conf:which_domain(Addr), % What the ****...
-    Logger = logger(Log, read, Addr, Port), 
-    case (catch snmpm_mpd:process_msg(Bytes, Domain, Addr, Port, 
-				      MpdState, NoteStore, Logger)) of
-
-	{ok, Vsn, Pdu, MS, ACM} ->
-	    maybe_handle_recv_pdu(Addr, Port, Vsn, Pdu, MS, ACM, 
-				  Logger, State);
-
-	{discarded, Reason, Report} ->
-	    ?vdebug("discarded: ~p", [Reason]),
-	    ErrorInfo = {failed_processing_message, Reason},
-	    Pid ! {snmp_error, ErrorInfo, Addr, Port},
-	    maybe_udp_send(State#state.filter, Sock, Addr, Port, Report),
-	    ok;
-
-	{discarded, Reason} ->
-	    ?vdebug("discarded: ~p", [Reason]),
-	    ErrorInfo = {failed_processing_message, Reason},
-	    Pid ! {snmp_error, ErrorInfo, Addr, Port},
-	    ok;
-
-	Error ->
-	    error_msg("processing of received message failed: "
-		      "~n   ~p", [Error]),
-	    ok
-    end.
-
-
-maybe_handle_recv_pdu(Addr, Port, 
-		      Vsn, #pdu{type = Type} = Pdu, PduMS, ACM, 
-		      Logger, 
-		      #state{filter = FilterMod} = State) ->
-    case (catch FilterMod:accept_recv_pdu(Addr, Port, Type)) of
-	false ->
-	    inc(netIfPduInDrops),
-	    ok;
-	_ ->
-	    handle_recv_pdu(Addr, Port, Vsn, Pdu, PduMS, ACM, Logger, State)
-    end;
-maybe_handle_recv_pdu(Addr, Port, Vsn, Trap, PduMS, ACM, Logger, 
-		      #state{filter = FilterMod} = State) 
-  when is_record(Trap, trappdu) ->
-    case (catch FilterMod:accept_recv_pdu(Addr, Port, trappdu)) of
-	false ->
-	    inc(netIfPduInDrops),
-	    ok;
-	_ ->
-	    handle_recv_pdu(Addr, Port, Vsn, Trap, PduMS, ACM, Logger, State)
-    end;
-maybe_handle_recv_pdu(Addr, Port, Vsn, Pdu, PduMS, ACM, Logger, State) ->
-    handle_recv_pdu(Addr, Port, Vsn, Pdu, PduMS, ACM, Logger, State).
-
-
-handle_recv_pdu(Addr, Port, 
-		Vsn, #pdu{type = 'inform-request'} = Pdu, _PduMS, ACM, 
-		Logger, #state{server = Pid, irb = IRB} = State) ->
-    handle_inform_request(IRB, Pid, Vsn, Pdu, ACM, 
-			  Addr, Port, Logger, State);
-handle_recv_pdu(Addr, Port, 
-		_Vsn, #pdu{type = report} = Pdu, _PduMS, ok, 
-		_Logger, 
-		#state{server = Pid} = _State) ->
-    ?vtrace("received report - ok", []),
-    Pid ! {snmp_report, {ok, Pdu}, Addr, Port},
-    ok;
-handle_recv_pdu(Addr, Port, 
-		_Vsn, #pdu{type = report} = Pdu, _PduMS, 
-		{error, ReqId, Reason}, 
-		_Logger, 
-		#state{server = Pid} = _State) ->
-    ?vtrace("received report - error", []),
-    Pid ! {snmp_report, {error, ReqId, Reason, Pdu}, Addr, Port},
-    ok;
-handle_recv_pdu(Addr, Port, 
-		_Vsn, #pdu{type = 'snmpv2-trap'} = Pdu, _PduMS, _ACM, 
-		_Logger, 
-		#state{server = Pid} = _State) ->
-    ?vtrace("received snmpv2-trap", []),
-    Pid ! {snmp_trap, Pdu, Addr, Port},
-    ok;
-handle_recv_pdu(Addr, Port, 
-		_Vsn, Trap, _PduMS, _ACM, 
-		_Logger, 
-		#state{server = Pid} = _State) when is_record(Trap, trappdu) ->
-    ?vtrace("received trappdu", []),
-    Pid ! {snmp_trap, Trap, Addr, Port},
-    ok;
-handle_recv_pdu(Addr, Port, 
-		_Vsn, Pdu, _PduMS, _ACM, 
-		_Logger, 
-		#state{server = Pid} = _State) when is_record(Pdu, pdu) ->
-    ?vtrace("received pdu", []),
-    Pid ! {snmp_pdu, Pdu, Addr, Port},
-    ok;
-handle_recv_pdu(_Addr, _Port, _Vsn, Pdu, _PduMS, ACM, _Logger, _State) ->
-    ?vlog("received unexpected pdu: "
-	    "~n   Pdu: ~p"
-	    "~n   ACM: ~p", [Pdu, ACM]),
-    ok.
-
-
-handle_inform_request(auto, Pid, Vsn, Pdu, ACM, Addr, Port, Logger, State) ->
-    ?vtrace("received inform-request (true)", []),
-    Pid ! {snmp_inform, ignore, Pdu, Addr, Port},
-    RePdu = make_response_pdu(Pdu),
-    maybe_send_inform_response(RePdu, Vsn, ACM, Addr, Port, Logger, State);
-handle_inform_request({user, To}, Pid, Vsn, #pdu{request_id = ReqId} = Pdu, 
-		      ACM, Addr, Port, _Logger, _State) ->
-    ?vtrace("received inform-request (false)", []),
-
-    Pid ! {snmp_inform, ReqId, Pdu, Addr, Port},
-
-    %% Before we go any further, we need to check that we have not
-    %% already received this message (possible resend).
-
-    Key = {ReqId, Addr, Port},
-    case ets:lookup(snmpm_inform_request_table, Key) of
-	[_] ->
-	    %% OK, we already know about this.  We assume this
-	    %% is a resend. Either the agent is really eager or
-	    %% the user has not answered yet. Bad user!
-	    ok;
-	[] ->
-	    RePdu  = make_response_pdu(Pdu),
-	    Expire = t() + To, 
-	    Rec    = {Key, Expire, {Vsn, ACM, RePdu}},
-	    ets:insert(snmpm_inform_request_table, Rec)
-    end,
-    ok.
-	    
-handle_inform_response(Ref, Addr, Port, State) ->
-    Verbosity = get(verbosity), 
-    spawn_opt(fun() -> 
-		      Log = worker_init(State, Verbosity), 
-		      Res = (catch do_handle_inform_response(
-				     Ref, 
-				     Addr, Port, 
-				     State#state{log = Log})),
-		      worker_exit(inform_reponse, {Addr, Port}, Res)
-	      end, 
-	      [monitor]).
-    
-
-
-do_handle_inform_response(Ref, Addr, Port, State) ->
-    Key = {Ref, Addr, Port},
-    case ets:lookup(snmpm_inform_request_table, Key) of
-	[{Key, _, {Vsn, ACM, RePdu}}] ->
-	    Logger = logger(State#state.log, read, Addr, Port),
-	    ets:delete(snmpm_inform_request_table, Key), 
-	    maybe_send_inform_response(RePdu, Vsn, ACM, Addr, Port, 
-				       Logger, State);
-	[] ->
-	    %% Already acknowledged, or the user was to slow to reply...
-	    ok
-    end,
-    ok.
-
-maybe_send_inform_response(RePdu, Vsn, ACM, Addr, Port, Logger, 
-			   #state{server = Pid, 
-				  sock   = Sock, 
-				  filter = FilterMod}) ->
-    case (catch FilterMod:accept_send_pdu(Addr, Port, pdu_type_of(RePdu))) of
-	false ->
-	    inc(netIfPduOutDrops),
-	    ok;
-	_ ->
-	    case snmpm_mpd:generate_response_msg(Vsn, RePdu, ACM, Logger) of
-		{ok, Msg} ->
-		    maybe_udp_send(FilterMod, Sock, Addr, Port, Msg);
-		{discarded, Reason} ->
-		    ?vlog("failed generating response message:"
-			  "~n   Reason: ~p", [Reason]),
-		    ReqId     = RePdu#pdu.request_id,
-		    ErrorInfo = {failed_generating_response, {RePdu, Reason}},
-		    Pid ! {snmp_error, ReqId, ErrorInfo, Addr, Port},
-		    ok
-	    end
-    end.
-    
-handle_inform_response_gc(#state{irb = IRB} = State) ->
-    ets:safe_fixtable(snmpm_inform_request_table, true),
-    do_irgc(ets:first(snmpm_inform_request_table), t()),
-    ets:safe_fixtable(snmpm_inform_request_table, false),
-    State#state{irgc = irgc_start(IRB)}.
-
-%% We are deleting at the same time as we are traversing the table!!!
-do_irgc('$end_of_table', _) ->
-    ok;
-do_irgc(Key, Now) ->
-    Next = ets:next(snmpm_inform_request_table, Key),
-    case ets:lookup(snmpm_inform_request_table, Key) of
-        [{Key, BestBefore, _}] when BestBefore < Now ->
-            ets:delete(snmpm_inform_request_table, Key);
-        _ ->
-            ok
-    end,
-    do_irgc(Next, Now).
-
-irgc_start(auto) ->
-    undefined;
-irgc_start(_) ->
-    erlang:send_after(?IRGC_TIMEOUT, self(), inform_response_gc).
-
-irgc_stop(undefined) ->
-    ok;
-irgc_stop(Ref) ->
-    (catch erlang:cancel_timer(Ref)).
-
-
-handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, Port, State) ->
-    Verbosity = get(verbosity), 
-    spawn_opt(fun() -> 
-		      Log = worker_init(State, Verbosity), 
-		      Res = (catch maybe_handle_send_pdu(
-				     Pdu, Vsn, MsgData, 
-				     Domain, Addr, Port, 
-				     State#state{log = Log})), 
-		      worker_exit(send_pdu, {Domain, Addr, Port}, Res)
-	      end, 
-	      [monitor]).
-
-maybe_handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, Port, 
-		      #state{filter = FilterMod} = State) ->
-    case (catch FilterMod:accept_send_pdu(Addr, Port, pdu_type_of(Pdu))) of
-	false ->
-	    inc(netIfPduOutDrops),
-	    ok;
-	_ ->
-	    do_handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, Port, State)
-    end.
-
-do_handle_send_pdu(Pdu, Vsn, MsgData, _Domain, Addr, Port, 
-		#state{server     = Pid, 
-		       note_store = NoteStore, 
-		       sock       = Sock, 
-		       log        = Log,
-		       filter     = FilterMod}) ->
-    Logger = logger(Log, write, Addr, Port),
-    case (catch snmpm_mpd:generate_msg(Vsn, NoteStore, 
-				       Pdu, MsgData, Logger)) of
-	{ok, Msg} ->
-	    ?vtrace("do_handle_send_pdu -> message generated", []),
-	    maybe_udp_send(FilterMod, Sock, Addr, Port, Msg);	    
-	{discarded, Reason} ->
-	    ?vlog("PDU not sent: "
-		  "~n   PDU:    ~p"
-		  "~n   Reason: ~p", [Pdu, Reason]),
-	    Pid ! {snmp_error, Pdu, Reason},
-	    ok
-    end.
-
-
-maybe_udp_send(FilterMod, Sock, Addr, Port, Msg) ->
-    case (catch FilterMod:accept_send(Addr, Port)) of
-	false ->
-	    inc(netIfMsgOutDrops),
-	    ok;
-	_ ->
-	    udp_send(Sock, Addr, Port, Msg)
-    end.
-	    
-    
-udp_send(Sock, Addr, Port, Msg) ->
-    case (catch gen_udp:send(Sock, Addr, Port, Msg)) of
-	ok ->
-	    ?vdebug("sent ~w bytes to ~w:~w [~w]", 
-		    [sz(Msg), Addr, Port, Sock]),
-	    ok;
-	{error, Reason} ->
-	    error_msg("failed sending message to ~p:~p: "
-		      "~n   ~p",[Addr, Port, Reason]),
-	    ok;
-	Error ->
-	    error_msg("failed sending message to ~p:~p: "
-		      "~n   ~p",[Addr, Port, Error]),
-	    ok
-    end.
-
-sz(B) when is_binary(B) ->
-    size(B);
-sz(L) when is_list(L) ->
-    length(L);
-sz(_) ->
-    undefined.
-
-
-handle_disk_log(_Log, {wrap, NoLostItems}, State) ->
-    ?vlog("Audit Trail Log - wrapped: ~w previously logged items where lost", 
-	  [NoLostItems]),
-    State;
-handle_disk_log(_Log, {truncated, NoLostItems}, State) ->
-    ?vlog("Audit Trail Log - truncated: ~w items where lost when truncating", 
-	  [NoLostItems]),
-    State;
-handle_disk_log(_Log, full, State) ->
-    error_msg("Failed to write to Audit Trail Log (full)", []),
-    State;
-handle_disk_log(_Log, {error_status, ok}, State) ->
-    State;
-handle_disk_log(_Log, {error_status, {error, Reason}}, State) ->
-    error_msg("Error status received from Audit Trail Log: "
-	      "~n~p", [Reason]),
-    State;
-handle_disk_log(_Log, _Info, State) ->
-    State.
-
-
-%% mk_discovery_msg('version-3', Pdu, _VsnHdr, UserName) ->
-%%     ScopedPDU = #scopedPdu{contextEngineID = "",
-%% 			   contextName = "",
-%% 			   data = Pdu},
-%%     Bytes = snmp_pdus:enc_scoped_pdu(ScopedPDU),
-%%     MsgID = get(msg_id),
-%%     put(msg_id,MsgID+1),
-%%     UsmSecParams = 
-%% 	#usmSecurityParameters{msgAuthoritativeEngineID = "",
-%% 			       msgAuthoritativeEngineBoots = 0,
-%% 			       msgAuthoritativeEngineTime = 0,
-%% 			       msgUserName = UserName,
-%% 			       msgPrivacyParameters = "",
-%% 			       msgAuthenticationParameters = ""},
-%%     SecBytes = snmp_pdus:enc_usm_security_parameters(UsmSecParams),
-%%     PduType = Pdu#pdu.type,
-%%     Hdr = #v3_hdr{msgID = MsgID, 
-%% 		  msgMaxSize = 1000,
-%% 		  msgFlags = snmp_misc:mk_msg_flags(PduType, 0),
-%% 		  msgSecurityModel = ?SEC_USM,
-%% 		  msgSecurityParameters = SecBytes},
-%%     Msg = #message{version = 'version-3', vsn_hdr = Hdr, data = Bytes},
-%%     case (catch snmp_pdus:enc_message_only(Msg)) of
-%% 	{'EXIT', Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	L when list(L) ->
-%% 	    {Msg, L}
-%%     end;
-%% mk_discovery_msg(Version, Pdu, {Com, _, _, _, _}, UserName) ->
-%%     Msg = #message{version = Version, vsn_hdr = Com, data = Pdu},
-%%     case catch snmp_pdus:enc_message(Msg) of
-%% 	{'EXIT', Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	L when list(L) -> 
-%% 	    {Msg, L}
-%%     end.
-
-
-%% mk_msg('version-3', Pdu, {Context, User, EngineID, CtxEngineId, SecLevel}, 
-%%        MsgData) ->
-%%     %% Code copied from snmp_mpd.erl
-%%     {MsgId, SecName, SecData} =
-%% 	if
-%% 	    tuple(MsgData), Pdu#pdu.type == 'get-response' ->
-%% 		MsgData;
-%% 	    true -> 
-%% 		Md = get(msg_id),
-%% 		put(msg_id, Md + 1),
-%% 		{Md, User, []}
-%% 	end,
-%%     ScopedPDU = #scopedPdu{contextEngineID = CtxEngineId,
-%% 			   contextName = Context,
-%% 			   data = Pdu},
-%%     ScopedPDUBytes = snmp_pdus:enc_scoped_pdu(ScopedPDU),
-
-%%     PduType = Pdu#pdu.type,
-%%     V3Hdr = #v3_hdr{msgID      = MsgId,
-%% 		    msgMaxSize = 1000,
-%% 		    msgFlags   = snmp_misc:mk_msg_flags(PduType, SecLevel),
-%% 		    msgSecurityModel = ?SEC_USM},
-%%     Message = #message{version = 'version-3', vsn_hdr = V3Hdr,
-%% 		       data = ScopedPDUBytes},
-%%     SecEngineID = case PduType of
-%% 		      'get-response' -> snmp_framework_mib:get_engine_id();
-%% 		      _ -> EngineID
-%% 		  end,
-%%     case catch snmp_usm:generate_outgoing_msg(Message, SecEngineID,
-%% 					      SecName, SecData, SecLevel) of
-%% 	{'EXIT', Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	{error, Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	Packet ->
-%% 	    Packet
-%%     end;
-%% mk_msg(Version, Pdu, {Com, _User, _EngineID, _Ctx, _SecLevel}, _SecData) ->
-%%     Msg = #message{version = Version, vsn_hdr = Com, data = Pdu},
-%%     case catch snmp_pdus:enc_message(Msg) of
-%% 	{'EXIT', Reason} ->
-%% 	    error("Encoding error. Pdu: ~w. Reason: ~w",[Pdu, Reason]),
-%% 	    error;
-%% 	B when list(B) -> 
-%% 	    B
-%%     end.
-
-
-%% handle_system_info_updated(#state{log = {Log, _OldType}} = State, 
-%% 			   audit_trail_log_type = _What) ->
-%%     %% Just to make sure, check that ATL is actually enabled
-%%     case snmpm_config:system_info(audit_trail_log) of
-%% 	{ok, true} ->
-%% 	    {ok, Type} = snmpm_config:system_info(audit_trail_log_type),
-%% 	    NewState = State#state{log = {Log, Type}},
-%% 	    {NewState, ok};
-%% 	_ ->
-%% 	    {State, {error, {adt_not_enabled}}}
-%%     end;
-%% handle_system_info_updated(_State, _What) ->
-%%     ok.
-
-handle_get_log_type(#state{log = {_Log, Value}} = State) ->
-    %% Just to make sure, check that ATL is actually enabled
-    case snmpm_config:system_info(audit_trail_log) of
-	{ok, true} ->
-	    Type = 
-		case {lists:member(read, Value), lists:member(write, Value)} of
-		    {true, true} ->
-			read_write;
-		    {true, false} ->
-			read;
-		    {false, true} ->
-			write;
-		    {false, false} ->
-			throw({State, {error, {bad_atl_type, Value}}})
-		end,
-	    {ok, Type};
-	_ ->
-	    {error, not_enabled}
-    end;
-handle_get_log_type(_State) ->
-    {error, not_enabled}.
-    
-handle_set_log_type(#state{log = {Log, OldValue}} = State, NewType) ->
-    %% Just to make sure, check that ATL is actually enabled
-    case snmpm_config:system_info(audit_trail_log) of
-	{ok, true} ->
-	    NewValue = 
- 		case NewType of
- 		    read ->
- 			[read];
- 		    write ->
- 			[write];
- 		    read_write ->
- 			[read,write];
- 		    _ ->
- 			throw({State, {error, {bad_atl_type, NewType}}})
- 		end,
-	    NewState = State#state{log = {Log, NewValue}},
-	    OldType = 
-		case {lists:member(read, OldValue), 
-		      lists:member(write, OldValue)} of
-		    {true, true} ->
-			read_write;
-		    {true, false} ->
-			read;
-		    {false, true} ->
-			write;
-		    {false, false} ->
-			throw({State, {error, {bad_atl_type, OldValue}}})
-		end,
-	    {NewState, {ok, OldType}};
-	_ ->
-	    {State, {error, not_enabled}}
-    end;
-handle_set_log_type(State, _NewType) ->
-    {State, {error, not_enabled}}.
-
-
-%% -------------------------------------------------------------------
-
-worker_init(#state{log = undefined = Log}, Verbosity) ->
-    worker_init2(Log, Verbosity);
-worker_init(#state{log = {Name, Log, Type}}, Verbosity) ->
-    case snmp_log:open(Name, Log) of
-	{ok, NewLog} ->
-	    worker_init2({Name, NewLog, Type}, Verbosity);
-	{error, Reason} -> 
-	    warning_msg("NetIf worker ~p failed opening ATL: "
-			"~n   ~p", [self(), Reason]),
-	    NewLog = undefined, 
-	    worker_init2({Name, NewLog, Type}, Verbosity)
-    end;
-worker_init(State, Verbosity) ->
-    ?vinfo("worker_init -> entry with invalid data: "
-	   "~n   State:     ~p"
-	   "~n   Verbosity: ~p", [State, Verbosity]),
-    exit({worker_init, State, Verbosity}).
-
-worker_init2(Log, Verbosity) ->
-    put(sname,     mnifw),
-    put(verbosity, Verbosity),
-    Log.
-
-
-worker_exit(Tag, Info, Result) ->
-    exit({net_if_worker, {Tag, Info, Result}}).
-
-handle_worker_exit(_, {_, _, ok}) ->
-    ok;
-handle_worker_exit(Pid, {udp, {Addr, Port}, ExitStatus}) ->
-    warning_msg("Worker process (~p) terminated "
-		"while processing (incomming) message from ~w:~w: "
-		"~n~p", [Pid, Addr, Port, ExitStatus]),
-    ok;
-handle_worker_exit(Pid, {send_pdu, {Domain, Addr, Port}, ExitStatus}) ->
-    warning_msg("Worker process (~p) terminated "
-		"while processing (outgoing) pdu for [~w] ~w:~w: "
-		"~n~p", [Pid, Domain, Addr, Port, ExitStatus]),
-    ok;
-handle_worker_exit(Pid, {inform_response, {Addr, Port}, ExitStatus}) ->
-    warning_msg("Worker process (~p) terminated "
-		"while processing (outgoing) inform response for ~w:~w: "
-		"~n~p", [Pid, Addr, Port, ExitStatus]),
-    ok;
-handle_worker_exit(_, _) ->
-    ok.
-
-
-%% -------------------------------------------------------------------
-
-make_response_pdu(#pdu{request_id = ReqId, varbinds = Vbs}) ->
-    #pdu{type         = 'get-response', 
-	 request_id   = ReqId, 
-	 error_status = noError,
-	 error_index  = 0, 
-	 varbinds     = Vbs}.
-
-
-%% ----------------------------------------------------------------
-
-pdu_type_of(#pdu{type = Type}) ->
-    Type;
-pdu_type_of(TrapPdu) when is_record(TrapPdu, trappdu) ->
-    trap.
-
-
-%% -------------------------------------------------------------------
-
-%% At this point this function is used during testing
-maybe_process_extra_info(?DEFAULT_EXTRA_INFO) ->
-    ok;
-maybe_process_extra_info({?SNMPM_EXTRA_INFO_TAG, Fun}) 
-  when is_function(Fun, 0) ->
-    (catch Fun()),
-    ok;
-maybe_process_extra_info(_ExtraInfo) ->
-    ok.
-    
-
-%% -------------------------------------------------------------------
-
-t() ->
-    {A,B,C} = erlang:now(),
-    A*1000000000+B*1000+(C div 1000).
-
-
-%% -------------------------------------------------------------------
-
-logger(undefined, _Type, _Addr, _Port) ->
-    fun(_) ->
-	    ok
-    end;
-logger({_Name, Log, Types}, Type, Addr, Port) ->
-    case lists:member(Type, Types) of
-	true ->
-	    fun(Msg) ->
-		    snmp_log:log(Log, Msg, Addr, Port)
-	    end;
-	false ->
-	    fun(_) ->
-		    ok
-	    end
-    end.
-
-
-%% -------------------------------------------------------------------
-
-%% info_msg(F, A) ->
-%%     ?snmpm_info("NET-IF server: " ++ F, A).
-
-warning_msg(F, A) ->
-    ?snmpm_warning("NET-IF server: " ++ F, A).
-
-error_msg(F, A) ->
-    ?snmpm_error("NET-IF server: " ++ F, A).
-
-
-
-%%%-------------------------------------------------------------------
-
-% get_opt(Key, Opts) ->
-%     ?vtrace("get option ~w", [Key]),
-%     snmp_misc:get_option(Key, Opts).
-
-get_opt(Opts, Key, Def) ->
-    ?vtrace("get option ~w with default ~p", [Key, Def]),
-    snmp_misc:get_option(Key, Opts, Def).
-
-
-%% -------------------------------------------------------------------
-
-get_info(#state{sock = Id}) ->
-    ProcSize = proc_mem(self()),
-    PortInfo = get_port_info(Id),
-    [{process_memory, ProcSize}, {port_info, PortInfo}].
-
-proc_mem(P) when is_pid(P) ->
-    case (catch erlang:process_info(P, memory)) of
-	{memory, Sz} when is_integer(Sz) ->
-	    Sz;
-	_ ->
-	    undefined
-    end.
-%% proc_mem(_) ->
-%%     undefined.
-
-
-get_port_info(Id) ->
-    PortInfo = 
-	case (catch erlang:port_info(Id)) of
-	    PI when is_list(PI) ->
-		[{port_info, PI}];
-	    _ ->
-		[]
-	end,
-    PortStatus = 
-	case (catch prim_inet:getstatus(Id)) of
-	    {ok, PS} ->
-		[{port_status, PS}];
-	    _ ->
-		[]
-	end,
-    PortAct = 
-	case (catch inet:getopts(Id, [active])) of
-	    {ok, PA} ->
-		[{port_act, PA}];
-	    _ ->
-		[]
-	end,
-    PortStats = 
-	case (catch inet:getstat(Id)) of
-	    {ok, Stat} ->
-		[{port_stats, Stat}];
-	    _ ->
-		[]
-	end,
-    IfList = 
-	case (catch inet:getif(Id)) of
-	    {ok, IFs} ->
-		[{interfaces, IFs}];
-	    _ ->
-		[]
-	end,
-    BufSz = 
-	case (catch inet:getopts(Id, [recbuf, sndbuf, buffer])) of
-	    {ok, Sz} ->
-		[{buffer_size, Sz}];
-	    _ ->
-		[]
-	end,
-    [{socket, Id}] ++ 
-	IfList ++ 
-	PortStats ++ 
-	PortInfo ++ 
-	PortStatus ++ 
-	PortAct ++
-	BufSz.
-
-
-%%-----------------------------------------------------------------
-%% Counter functions
-%%-----------------------------------------------------------------
-init_counters() ->
-    F = fun(Counter) -> maybe_create_counter(Counter) end,
-    lists:map(F, counters()).
-
-reset_counters() ->
-    F = fun(Counter) -> snmpm_config:reset_stats_counter(Counter) end,
-    lists:map(F, counters()).
-
-maybe_create_counter(Counter) ->
-    snmpm_config:maybe_cre_stats_counter(Counter, 0).
-
-counters() ->
-    [
-     netIfMsgOutDrops,
-     netIfMsgInDrops,
-     netIfPduOutDrops,
-     netIfPduInDrops
-    ].
-
-inc(Name)    -> inc(Name, 1).
-inc(Name, N) -> snmpm_config:incr_stats_counter(Name, N).
-
-%% get_counters() ->
-%%     Counters = counters(),
-%%     get_counters(Counters, []).
-
-%% get_counters([], Acc) ->
-%%     lists:reverse(Acc);
-%% get_counters([Counter|Counters], Acc) ->
-%%     case snmpm_config:get_stats_counter(Counter) of
-%%         {ok, CounterVal} ->
-%%             get_counters(Counters, [{Counter, CounterVal}|Acc]);
-%%         _ ->
-%%             get_counters(Counters, Acc)
-%%     end.
-
-
-%% ----------------------------------------------------------------
-
-call(Pid, Req) ->
-    call(Pid, Req, infinity).
-
-call(Pid, Req, Timeout) ->
-    gen_server:call(Pid, Req, Timeout).
-
-cast(Pid, Msg) ->
-    gen_server:cast(Pid, Msg).
 
+-define(snmpm_net_if_mt, true).
+-module(snmpm_net_if_mt).
+-include("snmpm_net_if.erl").
diff --git a/lib/snmp/src/manager/snmpm_network_interface.erl b/lib/snmp/src/manager/snmpm_network_interface.erl
index b830d45ce7..d0f6f709d3 100644
--- a/lib/snmp/src/manager/snmpm_network_interface.erl
+++ b/lib/snmp/src/manager/snmpm_network_interface.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/manager/snmpm_network_interface_filter.erl b/lib/snmp/src/manager/snmpm_network_interface_filter.erl
index ae8b7cfce1..35bec4e7e7 100644
--- a/lib/snmp/src/manager/snmpm_network_interface_filter.erl
+++ b/lib/snmp/src/manager/snmpm_network_interface_filter.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2009. All Rights Reserved.
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/manager/snmpm_server.erl b/lib/snmp/src/manager/snmpm_server.erl
index 61d22362cc..c8d7fa1e8b 100644
--- a/lib/snmp/src/manager/snmpm_server.erl
+++ b/lib/snmp/src/manager/snmpm_server.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2015. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
@@ -163,8 +164,7 @@
 	 reg_type,
 	 target,
 	 domain,
-	 addr, 
-	 port, 
+	 address,
 	 type, 
 	 data, 
 	 ref, 
@@ -468,27 +468,6 @@ cancel_async_request(UserId, ReqId) ->
     call({cancel_async_request, UserId, ReqId}).
 
 
-%% discovery(UserId, BAddr) ->
-%%     discovery(UserId, BAddr, ?SNMP_AGENT_PORT, [], 
-%% 	      ?DEFAULT_ASYNC_EXPIRE, ?EXTRA_INFO).
-
-%% discovery(UserId, BAddr, Config) when is_list(Config) ->
-%%     discovery(UserId, BAddr, ?SNMP_AGENT_PORT, Config, 
-%% 	      ?DEFAULT_ASYNC_EXPIRE, ?EXTRA_INFO);
-
-%% discovery(UserId, BAddr, Expire) when is_integer(Expire) ->
-%%     discovery(UserId, BAddr, ?SNMP_AGENT_PORT, [], Expire, ?EXTRA_INFO).
-
-%% discovery(UserId, BAddr, Config, Expire) ->
-%%     discovery(UserId, BAddr, ?SNMP_AGENT_PORT, Config, Expire, ?EXTRA_INFO).
-
-%% discovery(UserId, BAddr, Port, Config, Expire) ->
-%%     discovery(UserId, BAddr, Port, Config, Expire, ?EXTRA_INFO).
-
-%% discovery(UserId, BAddr, Port, Config, Expire, ExtraInfo) ->
-%%     call({discovery, self(), UserId, BAddr, Port, Config, Expire, ExtraInfo}).
-
-    
 verbosity(Verbosity) ->
     case ?vvalidate(Verbosity) of
 	Verbosity ->
@@ -928,14 +907,6 @@ handle_call({cancel_async_request, UserId, ReqId}, _From, State) ->
     {reply, Reply, State};
 
 
-%% handle_call({discovery, Pid, UserId, BAddr, Port, Config, Expire, ExtraInfo}, 
-%% 	    _From, State) ->
-%%     ?vlog("received discovery request", []),
-%%     Reply = (catch handle_discovery(Pid, UserId, BAddr, Port, Config, 
-%% 				    Expire, ExtraInfo, State)),
-%%     {reply, Reply, State};
-
-
 handle_call({load_mib, Mib}, _From, State) ->
     ?vlog("received load_mib request", []),
     case snmpm_config:load_mib(Mib) of
@@ -989,13 +960,6 @@ handle_call(is_started, _From, State) ->
     IsStarted = is_started(State), 
     {reply, IsStarted, State};
 
-%% handle_call({system_info_updated, Target, What}, _From, State) ->
-%%     ?vlog("received system_info_updated request: "
-%% 	  "~n   Target: ~p"
-%% 	  "~n   What:   ~p", [Target, What]),
-%%     Reply = handle_system_info_updated(State, Target, What), 
-%%     {reply, Reply, State};
-
 handle_call(get_log_type, _From, State) ->
     ?vlog("received get_log_type request", []),
     Reply = handle_get_log_type(State), 
@@ -1033,46 +997,41 @@ handle_info({snmp_error, Pdu, Reason}, State) ->
     handle_snmp_error(Pdu, Reason, State),
     {noreply, State};
 
-handle_info({snmp_error, Reason, Addr, Port}, State) ->
+handle_info({snmp_error, Reason, Domain, Addr}, State) ->
     ?vlog("received snmp_error message", []),
-    handle_snmp_error(Addr, Port, -1, Reason, State),
+    handle_snmp_error(Domain, Addr, -1, Reason, State),
     {noreply, State};
 
-handle_info({snmp_error, ReqId, Reason, Addr, Port}, State) ->
+handle_info({snmp_error, ReqId, Reason, Domain, Addr}, State) ->
     ?vlog("received snmp_error message", []),
-    handle_snmp_error(Addr, Port, ReqId, Reason, State),
+    handle_snmp_error(Domain, Addr, ReqId, Reason, State),
     {noreply, State};
 
-%% handle_info({snmp_error, ReqId, Pdu, Reason, Addr, Port}, State) ->
-%%     ?vlog("received snmp_error message", []),
-%%     handle_snmp_error(Pdu, ReqId, Reason, Addr, Port, State),
-%%     {noreply, State};
-
 
-handle_info({snmp_pdu, Pdu, Addr, Port}, State) ->
+handle_info({snmp_pdu, Pdu, Domain, Addr}, State) ->
     ?vlog("received snmp_pdu message", []),
-    handle_snmp_pdu(Pdu, Addr, Port, State),
+    handle_snmp_pdu(Pdu, Domain, Addr, State),
     {noreply, State};
 
 
-handle_info({snmp_trap, Trap, Addr, Port}, State) ->
+handle_info({snmp_trap, Trap, Domain, Addr}, State) ->
     ?vlog("received snmp_trap message", []),
-    handle_snmp_trap(Trap, Addr, Port, State),
+    handle_snmp_trap(Trap, Domain, Addr, State),
     {noreply, State};
 
 
-handle_info({snmp_inform, Ref, Pdu, Addr, Port}, State) ->
+handle_info({snmp_inform, Ref, Pdu, Domain, Addr}, State) ->
     ?vlog("received snmp_inform message", []),
-    handle_snmp_inform(Ref, Pdu, Addr, Port, State),
+    handle_snmp_inform(Ref, Pdu, Domain, Addr, State),
     {noreply, State};
 
 
-handle_info({snmp_report, {ok, Pdu}, Addr, Port}, State) ->
-    handle_snmp_report(Pdu, Addr, Port, State),
+handle_info({snmp_report, {ok, Pdu}, Domain, Addr}, State) ->
+    handle_snmp_report(Pdu, Domain, Addr, State),
     {noreply, State};
 
-handle_info({snmp_report, {error, ReqId, Info, Pdu}, Addr, Port}, State) ->
-    handle_snmp_report(ReqId, Pdu, Info, Addr, Port, State),
+handle_info({snmp_report, {error, ReqId, Info, Pdu}, Domain, Addr}, State) ->
+    handle_snmp_report(ReqId, Pdu, Info, Domain, Addr, State),
     {noreply, State};
 
 
@@ -1176,11 +1135,11 @@ handle_sync_get(Pid, UserId, TargetName, Oids, SendOpts, From, State) ->
 	    "~n   From:       ~p", 
 	    [Pid, UserId, TargetName, Oids, SendOpts, From]),
     case agent_data(TargetName, SendOpts) of
-	{ok, RegType, Domain, Addr, Port, Vsn, MsgData} ->
+	{ok, RegType, Domain, Addr, Vsn, MsgData} ->
 	    ?vtrace("handle_sync_get -> send a ~p message", [Vsn]),
 	    Extra   = ?GET_EXTRA(SendOpts), 
 	    ReqId   = send_get_request(Oids, Vsn, MsgData, 
-				       Domain, Addr, Port, 
+				       Domain, Addr,
 				       Extra, State),
 	    ?vdebug("handle_sync_get -> ReqId: ~p", [ReqId]),
 	    Msg     = {sync_timeout, ReqId, From},
@@ -1193,8 +1152,7 @@ handle_sync_get(Pid, UserId, TargetName, Oids, SendOpts, From, State) ->
 			       reg_type = RegType, 
 			       target   = TargetName, 
 			       domain   = Domain, 
-			       addr     = Addr,
-			       port     = Port,
+			       address  = Addr,
 			       type     = get, 
 			       data     = MsgData, 
 			       ref      = Ref, 
@@ -1230,11 +1188,11 @@ handle_sync_get_next(Pid, UserId, TargetName, Oids, SendOpts,
 	    "~n   From:       ~p", 
 	    [Pid, UserId, TargetName, Oids, SendOpts, From]),
     case agent_data(TargetName, SendOpts) of
-	{ok, RegType, Domain, Addr, Port, Vsn, MsgData} ->
+	{ok, RegType, Domain, Addr, Vsn, MsgData} ->
 	    ?vtrace("handle_sync_get_next -> send a ~p message", [Vsn]),
 	    Extra   = ?GET_EXTRA(SendOpts), 
 	    ReqId   = send_get_next_request(Oids, Vsn, MsgData, 
-					    Domain, Addr, Port, 
+					    Domain, Addr,
 					    Extra, State),
 	    ?vdebug("handle_sync_get_next -> ReqId: ~p", [ReqId]),
 	    Msg     = {sync_timeout, ReqId, From},
@@ -1247,12 +1205,11 @@ handle_sync_get_next(Pid, UserId, TargetName, Oids, SendOpts,
 			       reg_type = RegType, 
 			       target   = TargetName, 
 			       domain   = Domain, 
-			       addr     = Addr,
-			       port     = Port,
+			       address  = Addr,
 			       type     = get_next, 
 			       data     = MsgData, 
 			       ref      = Ref, 
-			       mon      = MonRef, 
+			       mon      = MonRef,
 			       from     = From},
 	    ets:insert(snmpm_request_table, Req),
 	    ok;
@@ -1290,11 +1247,11 @@ handle_sync_get_bulk(Pid, UserId, TargetName, NonRep, MaxRep, Oids, SendOpts,
 	    "~n   From:       ~p", 
 	    [Pid, UserId, TargetName, NonRep, MaxRep, Oids, SendOpts, From]),
     case agent_data(TargetName, SendOpts) of
-	{ok, RegType, Domain, Addr, Port, Vsn, MsgData} ->
+	{ok, RegType, Domain, Addr, Vsn, MsgData} ->
 	    ?vtrace("handle_sync_get_bulk -> send a ~p message", [Vsn]),
 	    Extra   = ?GET_EXTRA(SendOpts), 
 	    ReqId   = send_get_bulk_request(Oids, Vsn, MsgData, 
-					    Domain, Addr, Port, 
+					    Domain, Addr,
 					    NonRep, MaxRep, Extra, State),
 	    ?vdebug("handle_sync_get_bulk -> ReqId: ~p", [ReqId]),
 	    Msg     = {sync_timeout, ReqId, From},
@@ -1307,8 +1264,7 @@ handle_sync_get_bulk(Pid, UserId, TargetName, NonRep, MaxRep, Oids, SendOpts,
 			       reg_type = RegType, 
 			       target   = TargetName, 
 			       domain   = Domain, 
-			       addr     = Addr,
-			       port     = Port,
+			       address  = Addr,
 			       type     = get_bulk, 
 			       data     = MsgData, 
 			       ref      = Ref, 
@@ -1346,11 +1302,11 @@ handle_sync_set(Pid, UserId, TargetName, VarsAndVals, SendOpts, From, State) ->
 	    "~n   From:        ~p", 
 	    [Pid, UserId, TargetName, VarsAndVals, From]),
     case agent_data(TargetName, SendOpts) of
-	{ok, RegType, Domain, Addr, Port, Vsn, MsgData} ->
+	{ok, RegType, Domain, Addr, Vsn, MsgData} ->
 	    ?vtrace("handle_sync_set -> send a ~p message", [Vsn]),
 	    Extra   = ?GET_EXTRA(SendOpts), 
 	    ReqId   = send_set_request(VarsAndVals, Vsn, MsgData, 
-				       Domain, Addr, Port, 
+				       Domain, Addr,
 				       Extra, State),
 	    ?vdebug("handle_sync_set -> ReqId: ~p", [ReqId]),
 	    Msg     = {sync_timeout, ReqId, From},
@@ -1363,8 +1319,7 @@ handle_sync_set(Pid, UserId, TargetName, VarsAndVals, SendOpts, From, State) ->
 			       reg_type = RegType, 
 			       target   = TargetName, 
 			       domain   = Domain, 
-			       addr     = Addr,
-			       port     = Port,
+			       address  = Addr,
 			       type     = set, 
 			       data     = MsgData, 
 			       ref      = Ref, 
@@ -1400,11 +1355,11 @@ handle_async_get(Pid, UserId, TargetName, Oids, SendOpts, State) ->
 	    "~n   SendOpts:   ~p",
 	    [Pid, UserId, TargetName, Oids, SendOpts]),
     case agent_data(TargetName, SendOpts) of
-	{ok, RegType, Domain, Addr, Port, Vsn, MsgData} ->
+	{ok, RegType, Domain, Addr, Vsn, MsgData} ->
 	    ?vtrace("handle_async_get -> send a ~p message", [Vsn]),
 	    Extra  = ?GET_EXTRA(SendOpts), 
 	    ReqId  = send_get_request(Oids, Vsn, MsgData, 
-				      Domain, Addr, Port, 
+				      Domain, Addr,
 				      Extra, State),
 	    ?vdebug("handle_async_get -> ReqId: ~p", [ReqId]),
 	    Expire = ?ASYNC_GET_TIMEOUT(SendOpts), 
@@ -1413,11 +1368,10 @@ handle_async_get(Pid, UserId, TargetName, Oids, SendOpts, State) ->
 			      reg_type = RegType, 
 			      target   = TargetName, 
 			      domain   = Domain, 
-			      addr     = Addr,
-			      port     = Port,
+			      address  = Addr,
 			      type     = get, 
 			      data     = MsgData, 
-			      expire   = t() + Expire},
+			      expire   = snmp_misc:now(ms) + Expire},
 
 	    ets:insert(snmpm_request_table, Req),
 	    gct_activate(State#state.gct),
@@ -1450,11 +1404,11 @@ handle_async_get_next(Pid, UserId, TargetName, Oids, SendOpts, State) ->
 	    "~n   SendOpts:   ~p",
 	    [Pid, UserId, TargetName, Oids, SendOpts]),
     case agent_data(TargetName, SendOpts) of
-	{ok, RegType, Domain, Addr, Port, Vsn, MsgData} ->
+	{ok, RegType, Domain, Addr, Vsn, MsgData} ->
 	    ?vtrace("handle_async_get_next -> send a ~p message", [Vsn]),
 	    Extra  = ?GET_EXTRA(SendOpts), 
 	    ReqId  = send_get_next_request(Oids, Vsn, MsgData, 
-					   Domain, Addr, Port, 
+					   Domain, Addr,
 					   Extra, State),
 	    ?vdebug("handle_async_get_next -> ReqId: ~p", [ReqId]),
 	    Expire = ?ASYNC_GET_NEXT_TIMEOUT(SendOpts), 
@@ -1463,11 +1417,10 @@ handle_async_get_next(Pid, UserId, TargetName, Oids, SendOpts, State) ->
 			      reg_type = RegType, 
 			      target   = TargetName, 
 			      domain   = Domain, 
-			      addr     = Addr,
-			      port     = Port,
+			      address  = Addr,
 			      type     = get_next, 
 			      data     = MsgData, 
-			      expire   = t() + Expire},
+			      expire   = snmp_misc:now(ms) + Expire},
 
 	    ets:insert(snmpm_request_table, Req),
 	    gct_activate(State#state.gct),
@@ -1507,11 +1460,11 @@ handle_async_get_bulk(Pid,
 	    "~n   SendOpts:   ~p", 
 	    [Pid, UserId, TargetName, NonRep, MaxRep, Oids, SendOpts]),
     case agent_data(TargetName, SendOpts) of
-	{ok, RegType, Domain, Addr, Port, Vsn, MsgData} ->
+	{ok, RegType, Domain, Addr, Vsn, MsgData} ->
 	    ?vtrace("handle_async_get_bulk -> send a ~p message", [Vsn]),
 	    Extra  = ?GET_EXTRA(SendOpts), 
 	    ReqId  = send_get_bulk_request(Oids, Vsn, MsgData, 
-					   Domain, Addr, Port, 
+					   Domain, Addr,
 					   NonRep, MaxRep, Extra, State),
 	    ?vdebug("handle_async_get_bulk -> ReqId: ~p", [ReqId]),
 	    Expire = ?ASYNC_GET_BULK_TIMEOUT(SendOpts), 
@@ -1520,11 +1473,10 @@ handle_async_get_bulk(Pid,
 			      reg_type = RegType, 
 			      target   = TargetName, 
 			      domain   = Domain, 
-			      addr     = Addr,
-			      port     = Port,
+			      address  = Addr,
 			      type     = get_bulk, 
 			      data     = MsgData, 
-			      expire   = t() + Expire},
+			      expire   = snmp_misc:now(ms) + Expire},
 	    ets:insert(snmpm_request_table, Req),
 	    gct_activate(State#state.gct),
 	    {ok, ReqId};
@@ -1556,11 +1508,11 @@ handle_async_set(Pid, UserId, TargetName, VarsAndVals, SendOpts, State) ->
 	    "~n   SendOpts:    ~p",
 	    [Pid, UserId, TargetName, VarsAndVals, SendOpts]),
     case agent_data(TargetName, SendOpts) of
-	{ok, RegType, Domain, Addr, Port, Vsn, MsgData} ->
+	{ok, RegType, Domain, Addr, Vsn, MsgData} ->
 	    ?vtrace("handle_async_set -> send a ~p message", [Vsn]),
 	    Extra  = ?GET_EXTRA(SendOpts), 
 	    ReqId  = send_set_request(VarsAndVals, Vsn, MsgData, 
-				      Domain, Addr, Port, 
+				      Domain, Addr,
 				      Extra, State),
 	    ?vdebug("handle_async_set -> ReqId: ~p", [ReqId]),
 	    Expire = ?ASYNC_SET_TIMEOUT(SendOpts), 
@@ -1569,11 +1521,10 @@ handle_async_set(Pid, UserId, TargetName, VarsAndVals, SendOpts, State) ->
 			      reg_type = RegType, 
 			      target   = TargetName, 
 			      domain   = Domain, 
-			      addr     = Addr,
-			      port     = Port,
+			      address  = Addr,
 			      type     = set, 
 			      data     = MsgData, 
-			      expire   = t() + Expire},
+			      expire   = snmp_misc:now(ms) + Expire},
 
 	    ets:insert(snmpm_request_table, Req),
 	    gct_activate(State#state.gct),
@@ -1609,18 +1560,6 @@ handle_cancel_async_request(UserId, ReqId, _State) ->
 	    ?vlog("handle_cancel_async_request -> not found", []),
 	    {error, not_found}
     end.
-    
-
-%% handle_system_info_updated(#state{net_if = Pid, net_if_mod = Mod} = _State,
-%% 			   net_if = _Target, What) ->
-%%     case (catch Mod:system_info_updated(Pid, What)) of
-%% 	{'EXIT', _} ->
-%% 	    {error, not_supported};
-%% 	Else ->
-%% 	    Else
-%%     end;
-%% handle_system_info_updated(_State, Target, What) ->
-%%     {error, {bad_target, Target, What}}.
 
 handle_get_log_type(#state{net_if = Pid, net_if_mod = Mod}) ->
     case (catch Mod:get_log_type(Pid)) of
@@ -1638,47 +1577,6 @@ handle_set_log_type(#state{net_if = Pid, net_if_mod = Mod}, NewType) ->
 	    Else
     end.
 
-
-%% handle_discovery(Pid, UserId, BAddr, Port, Config, Expire, ExtraInfo, State) ->
-%%     ?vtrace("handle_discovery -> entry with"
-%% 	    "~n   Pid:         ~p"
-%% 	    "~n   UserId:      ~p"
-%% 	    "~n   BAddr:       ~p"
-%% 	    "~n   Port:        ~p"
-%% 	    "~n   Config:      ~p"
-%% 	    "~n   Expire:      ~p",
-%% 	    [Pid, UserId, BAddr, Port, Config, Expire]),
-%%     case agent_data(default, default, "", Config) of
-%% 	{ok, Addr, Port, Vsn, MsgData} ->
-%% 	    ?vtrace("handle_discovery -> send a ~p disco message", [Vsn]),
-%% 	    ReqId  = send_discovery(Vsn, MsgData, BAddr, Port, ExtraInfo, 
-%% 				    State),
-%% 	    ?vdebug("handle_discovery -> ReqId: ~p", [ReqId]),
-%% 	    MonRef = erlang:monitor(process, Pid),
-%% 	    ?vtrace("handle_discovery -> MonRef: ~p", [MonRef]),
-%% 	    Req    = #request{id        = ReqId,
-%% 			      user_id   = UserId, 
-%%			      target    = TargetName, 
-%% 			      addr      = BAddr, 
-%% 			      port      = Port,
-%% 			      type      = get, 
-%% 			      data      = MsgData, 
-%% 			      mon       = MonRef,
-%% 			      discovery = true, 
-%% 			      expire    = t() + Expire},
-%% 	    ets:insert(snmpm_request_table, Req),
-%% 	    gct_activate(State#state.gct),
-%% 	    {ok, ReqId};
-
-%% 	Error ->
-%% 	    ?vinfo("failed retrieving agent data for discovery (get):"
-%% 		   "~n   BAddr: ~p"
-%% 		   "~n   Port:  ~p"
-%% 		   "~n   Error: ~p", [BAddr, Port, Error]),
-%% 	    Error
-%%     end.
-
-
 handle_sync_timeout(ReqId, From, State) ->
     ?vtrace("handle_sync_timeout -> entry with"
 	    "~n   ReqId: ~p"
@@ -1702,7 +1600,7 @@ handle_sync_timeout(ReqId, From, State) ->
 	    Req = Req0#request{ref    = undefined, 
 			       mon    = undefined, 
 			       from   = undefined, 
-			       expire = t()},
+			       expire = snmp_misc:now(ms)},
 	    ets:insert(snmpm_request_table, Req),
 	    gct_activate(State#state.gct),
 	    ok;
@@ -1808,15 +1706,15 @@ handle_snmp_error(CrapError, Reason, _State) ->
 	      "~n~p~n~p", [CrapError, Reason]),
     ok.
 
-handle_snmp_error(Addr, Port, ReqId, Reason, State) ->
+handle_snmp_error(Domain, Addr, ReqId, Reason, State) ->
 
-    ?vtrace("handle_snmp_error -> entry with"
-	    "~n   Addr:   ~p"
-	    "~n   Port:   ~p"
-	    "~n   ReqId:  ~p"
-	    "~n   Reason: ~p", [Addr, Port, ReqId, Reason]),
+    ?vtrace("handle_snmp_error -> entry with~n"
+	    "   Domain:  ~p~n"
+	    "   Addr:    ~p~n"
+	    "   ReqId:   ~p~n"
+	    "   Reason:  ~p", [Domain, Addr, ReqId, Reason]),
 
-    case snmpm_config:get_agent_user_id(Addr, Port) of
+    case snmpm_config:get_agent_user_id(Domain, Addr) of
 	{ok, UserId} ->
 	    case snmpm_config:user_info(UserId) of
 		{ok, UserMod, UserData} ->
@@ -1831,7 +1729,7 @@ handle_snmp_error(Addr, Port, ReqId, Reason, State) ->
 			    error_msg("failed retreiving the default user "
 				      "info handling snmp error "
 				      "<~p,~p>: ~n~w~n~w",
-				      [Addr, Port, ReqId, Reason])
+				      [Domain, Addr, ReqId, Reason])
 		    end
 	    end;
 	_Error ->
@@ -1843,7 +1741,7 @@ handle_snmp_error(Addr, Port, ReqId, Reason, State) ->
 		    error_msg("failed retreiving the default user "
 			      "info handling snmp error "
 			      "<~p,~p>: ~n~w~n~w",
-			      [Addr, Port, ReqId, Reason])
+			      [Domain, Addr, ReqId, Reason])
 	    end
     end.
 
@@ -1851,18 +1749,28 @@ handle_snmp_error(Addr, Port, ReqId, Reason, State) ->
 handle_error(_UserId, Mod, Reason, ReqId, Data, _State) ->
     ?vtrace("handle_error -> entry when"
 	    "~n   Mod: ~p", [Mod]),
-    F = fun() -> (catch Mod:handle_error(ReqId, Reason, Data)) end,
+    F = fun() ->
+		try 
+		    begin
+			Mod:handle_error(ReqId, Reason, Data)
+		    end
+		catch
+		    T:E ->
+			CallbackArgs = [ReqId, Reason, Data], 
+			handle_invalid_result(handle_error, CallbackArgs, T, E)
+		end
+	end,
     handle_callback(F),
     ok.
 
 
 handle_snmp_pdu(#pdu{type = 'get-response', request_id = ReqId} = Pdu, 
-		Addr, Port, State) ->
+		Domain, Addr, State) ->
 
-    ?vtrace("handle_snmp_pdu(get-response) -> entry with"
-	    "~n   Addr: ~p"
-	    "~n   Port: ~p"
-	    "~n   Pdu:  ~p", [Addr, Port, Pdu]),
+    ?vtrace("handle_snmp_pdu(get-response) -> entry with~n"
+	    "   Domain:  ~p~n"
+	    "   Addr:    ~p~n"
+	    "   Pdu:     ~p", [Domain, Addr, Pdu]),
 
     case ets:lookup(snmpm_request_table, ReqId) of
 
@@ -1892,9 +1800,10 @@ handle_snmp_pdu(#pdu{type = 'get-response', request_id = ReqId} = Pdu,
 	    SnmpResponse = {EStatus, EIndex, Varbinds2},
 	    case snmpm_config:user_info(UserId) of
 		{ok, UserMod, UserData} ->
-		    handle_pdu(UserId, UserMod, 
-			       RegType, Target, Addr, Port, 
-			       ReqId, SnmpResponse, UserData, State),
+		    handle_pdu(
+		      UserId, UserMod,
+		      RegType, Target, Domain, Addr,
+		      ReqId, SnmpResponse, UserData, State),
 		    maybe_delete(Disco, ReqId);
 		_Error ->
 		    %% reply to outstanding request, for which there is no
@@ -1902,15 +1811,16 @@ handle_snmp_pdu(#pdu{type = 'get-response', request_id = ReqId} = Pdu,
 		    %% Therefor send it to the default user
 		    case snmpm_config:user_info() of
 			{ok, DefUserId, DefMod, DefData} ->
-			    handle_pdu(DefUserId, DefMod, 
-				       RegType, Target, Addr, Port, 
-				       ReqId, SnmpResponse, DefData, State),
+			    handle_pdu(
+			      DefUserId, DefMod,
+			      RegType, Target, Domain, Addr,
+			      ReqId, SnmpResponse, DefData, State),
 			    maybe_delete(Disco, ReqId);
 			Error ->
 			    error_msg("failed retreiving the default user "
 				      "info handling pdu from "
 				      "~p <~p,~p>: ~n~w~n~w",
-				      [Target, Addr, Port, Error, Pdu])
+				      [Target, Domain, Addr, Error, Pdu])
 		    end
 	    end;
 
@@ -1964,7 +1874,7 @@ handle_snmp_pdu(#pdu{type = 'get-response', request_id = ReqId} = Pdu,
 		 varbinds     = Varbinds} = Pdu,
 	    Varbinds2 = fix_vbs_BITS(Varbinds), 
 	    SnmpInfo = {EStatus, EIndex, Varbinds2},
-	    case snmpm_config:get_agent_user_id(Addr, Port) of
+	    case snmpm_config:get_agent_user_id(Domain, Addr) of
 		{ok, UserId} ->
 		    %% A very late reply or a reply to a request
 		    %% that has been cancelled.
@@ -1989,7 +1899,7 @@ handle_snmp_pdu(#pdu{type = 'get-response', request_id = ReqId} = Pdu,
 					      "user info handling (old) "
 					      "pdu from "
 					      "<~p,~p>: ~n~w~n~w",
-					      [Addr, Port, Error, Pdu])
+					      [Domain, Addr, Error, Pdu])
 			    end
 		    end;
 
@@ -2006,86 +1916,141 @@ handle_snmp_pdu(#pdu{type = 'get-response', request_id = ReqId} = Pdu,
 			    "no agent info found", []),
 		    case snmpm_config:user_info() of
 			{ok, DefUserId, DefMod, DefData} ->
-			    handle_agent(DefUserId, DefMod, 
-					 Addr, Port, 
-					 pdu, ignore, 
-					 SnmpInfo, DefData, State);
+			    handle_agent(
+			      DefUserId, DefMod,
+			      Domain, Addr,
+			      pdu, ignore,
+			      SnmpInfo, DefData, State);
 			Error ->
 			    error_msg("failed retreiving the default user "
 				      "info handling (old) pdu when no user "
 				      "found from "
 				      "<~p,~p>: ~n~w~n~w",
-				      [Addr, Port, Error, Pdu])
+				      [Domain, Addr, Error, Pdu])
 		    end
 	    end
     end;
 
-handle_snmp_pdu(CrapPdu, Addr, Port, _State) ->
+handle_snmp_pdu(CrapPdu, Domain, Addr, _State) ->
     error_msg("received crap (snmp) Pdu from ~w:~w =>"
-	      "~p", [Addr, Port, CrapPdu]),
+	      "~p", [Domain, Addr, CrapPdu]),
     ok.
 
 
-handle_pdu(_UserId, Mod, target_name = _RegType, TargetName, _Addr, _Port, 
-	   ReqId, SnmpResponse, Data, _State) ->
+handle_pdu(
+  _UserId, Mod, target_name = _RegType, TargetName, _Domain, _Addr,
+  ReqId, SnmpResponse, Data, _State) ->
     ?vtrace("handle_pdu(target_name) -> entry when"
 	    "~n   Mod: ~p", [Mod]),
     F = fun() ->
-		(catch Mod:handle_pdu(TargetName, ReqId, SnmpResponse, Data))
+		try
+		    begin
+			Mod:handle_pdu(TargetName, ReqId, SnmpResponse, Data)
+		    end
+		catch
+		    T:E ->
+			CallbackArgs = [TargetName, ReqId, SnmpResponse, Data], 
+			handle_invalid_result(handle_pdu, CallbackArgs, T, E) 
+		end
 	end,
     handle_callback(F),
     ok;
-handle_pdu(_UserId, Mod, addr_port = _RegType, _TargetName, Addr, Port, 
-	   ReqId, SnmpResponse, Data, _State) ->
+handle_pdu(
+  _UserId, Mod, addr_port = _RegType, _TargetName, _Domain, Addr,
+  ReqId, SnmpResponse, Data, _State) ->
     ?vtrace("handle_pdu(addr_port) -> entry when"
 	    "~n   Mod: ~p", [Mod]),
     F = fun() ->
-		(catch Mod:handle_pdu(Addr, Port, ReqId, SnmpResponse, Data))
+		{Ip, Port} = Addr,
+		(catch Mod:handle_pdu(Ip, Port, ReqId, SnmpResponse, Data))
 	end,
     handle_callback(F),
     ok.
 
 
-handle_agent(UserId, Mod, Addr, Port, Type, Ref, SnmpInfo, Data, State) ->
+handle_agent(UserId, Mod, Domain, Addr, Type, Ref, SnmpInfo, Data, State) ->
     ?vtrace("handle_agent -> entry when"
 	    "~n   UserId: ~p"
 	    "~n   Type:   ~p"
 	    "~n   Mod:    ~p", [UserId, Type, Mod]),
     F = fun() ->
-		do_handle_agent(UserId, Mod, Addr, Port, 
+		do_handle_agent(UserId, Mod, Domain, Addr,
 				Type, Ref, SnmpInfo, Data, State)
 	end,
     handle_callback(F),
     ok.
 
 do_handle_agent(DefUserId, DefMod, 
-		Addr, Port, 
+		Domain, Addr,
 		Type, Ref, 
 		SnmpInfo, DefData, State) ->
     ?vdebug("do_handle_agent -> entry when"
 	    "~n   DefUserId: ~p", [DefUserId]),
-    case (catch DefMod:handle_agent(Addr, Port, Type, SnmpInfo, DefData)) of
-	{'EXIT', {undef, _}} when Type =:= pdu ->
+    {Domain_or_Ip, Addr_or_Port} =
+	case Domain of
+	    snmpUDPDomain ->
+		Addr;
+	    _ ->
+		{Domain, Addr}
+	end,
+    try DefMod:handle_agent(
+	  Domain_or_Ip, Addr_or_Port, Type, SnmpInfo, DefData)
+    of
+	{register, UserId2, TargetName, Config} ->  
+	    ?vtrace("do_handle_agent -> register: "
+		    "~n   UserId2:    ~p"
+		    "~n   TargetName: ~p"
+		    "~n   Config:     ~p", 
+		    [UserId2, TargetName, Config]),
+	    Config2 =
+		ensure_present(
+		  [{tdomain, Domain}, {taddress, Addr}], Config),
+	    Config3 = [{reg_type, target_name} | Config2], 
+	    case snmpm_config:register_agent(UserId2, 
+					     TargetName, Config3) of
+		ok ->
+		    ok;
+		{error, Reason} ->
+		    error_msg("failed registering agent - "
+			      "handling agent "
+			      "~p <~p,~p>: ~n~w", 
+			      [TargetName, Domain, Addr, Reason]),
+		    ok
+	    end;
+	
+	ignore ->
+	    ?vdebug("do_handle_agent -> ignore", []),
+	    ok;
+
+	InvalidResult ->
+	    CallbackArgs =
+		[Domain_or_Ip, Addr_or_Port, Type, SnmpInfo, DefData],
+	    handle_invalid_result(handle_agent, CallbackArgs, InvalidResult) 
+
+    catch
+	error:{undef, _} when Type =:= pdu ->
 	    %% Maybe, still on the old API
 	    ?vdebug("do_handle_agent -> maybe still on the old api", []),
-	    case (catch DefMod:handle_agent(Addr, Port, SnmpInfo, DefData)) of
+	    {Ip, Port} = Addr,
+	    case (catch DefMod:handle_agent(Ip, Port, SnmpInfo, DefData)) of
 		{register, UserId2, Config} ->  
 		    ?vtrace("do_handle_agent -> register: "
 			    "~n   UserId2: ~p"
 			    "~n   Config:  ~p", [UserId2, Config]),
-		    TargetName = mk_target_name(Addr, Port, Config),
-		    Config2    = [{reg_type, addr_port}, 
-				  {address,  Addr}, 
-				  {port,     Port} | Config], 
-		    case snmpm_config:register_agent(UserId2, 
-						     TargetName, Config2) of
+		    TargetName = mk_target_name(Domain, Addr, Config),
+		    Config2 =
+			ensure_present(
+			  [{tdomain, Domain}, {taddress, Addr}], Config),
+		    Config3 = [{reg_type, addr_port} | Config2],
+		    case snmpm_config:register_agent(
+			   UserId2, TargetName, Config3) of
 			ok ->
 			    ok;
 			{error, Reason} ->
 			    error_msg("failed registering agent - "
 				      "handling agent "
 				      "~p <~p,~p>: ~n~w", 
-				      [TargetName, Addr, Port, Reason]),
+				      [TargetName, Domain, Addr, Reason]),
 			    ok
 		    end;
 		{register, UserId2, TargetName, Config} ->  
@@ -2094,18 +2059,19 @@ do_handle_agent(DefUserId, DefMod,
 			    "~n   TargetName: ~p"
 			    "~n   Config:     ~p", 
 			    [UserId2, TargetName, Config]),
-		    Config2 = ensure_present([{address, Addr}, {port, Port}], 
-					     Config),
+		    Config2 =
+			ensure_present(
+			  [{tdomain, Domain}, {taddress, Addr}], Config),
 		    Config3 = [{reg_type, target_name} | Config2], 
-		    case snmpm_config:register_agent(UserId2, 
-						     TargetName, Config3) of
+		    case snmpm_config:register_agent(
+			   UserId2, TargetName, Config3) of
 			ok ->
 			    ok;
 			{error, Reason} ->
 			    error_msg("failed registering agent - "
 				      "handling agent "
 				      "~p <~p,~p>: ~n~w", 
-				      [TargetName, Addr, Port, Reason]),
+				      [TargetName, Domain, Addr, Reason]),
 			    ok
 		    end;
 		_Ignore ->
@@ -2113,66 +2079,51 @@ do_handle_agent(DefUserId, DefMod,
 		    ok
 	    end;
 
-	{'EXIT', {undef, _}} ->
+	error:{undef, _} ->
 	    %% If the user does not implement the new API (but the
 	    %% old), then this clause catches all non-pdu handle_agent 
-	    %% calls. These calls was previously never made,so we make 
+	    %% calls. These calls was previously never made, so we make 
 	    %% a best-effert call (using reg-type target_name) to the 
 	    %% various callback functions, and leave it to the user to
 	    %% figure out
 
 	    %% Backward compatibillity crap
 	    RegType = target_name,
-	    Target  = mk_target_name(Addr, Port, default_agent_config()),
+	    Target  = mk_target_name(Domain, Addr, default_agent_config()),
 	    case Type of
 		report ->
 		    SnmpInform = SnmpInfo, 
-		    handle_report(DefUserId, DefMod, 
-				  RegType, Target, Addr, Port, 
-				  SnmpInform, DefData, State);
+		    handle_report(
+		      DefUserId, DefMod, 
+		      RegType, Target, Domain, Addr,
+		      SnmpInform, DefData, State);
 
 		inform ->
 		    SnmpInform = SnmpInfo, 
-		    handle_inform(DefUserId, DefMod, Ref, 
-				  RegType, Target, Addr, Port, 
-				  SnmpInform, DefData, State);
+		    handle_inform(
+		      DefUserId, DefMod, Ref, 
+		      RegType, Target, Domain, Addr,
+		      SnmpInform, DefData, State);
 
 		trap ->
 		    SnmpTrapInfo = SnmpInfo, 
-		    handle_trap(DefUserId, DefMod, 
-				RegType, Target, Addr, Port, 
-				SnmpTrapInfo, DefData, State);
+		    handle_trap(
+		      DefUserId, DefMod, 
+		      RegType, Target, Domain, Addr,
+		      SnmpTrapInfo, DefData, State);
 
 		_ ->
-		    error_msg("failed delivering ~w info to default user - "
-			      "regarding agent "
-			      "<~p,~p>: ~n~w", [Type, Addr, Port, SnmpInfo])
-	    end;
-
-	{register, UserId2, TargetName, Config} ->  
-	    ?vtrace("do_handle_agent -> register: "
-		    "~n   UserId2:    ~p"
-		    "~n   TargetName: ~p"
-		    "~n   Config:     ~p", 
-		    [UserId2, TargetName, Config]),
-	    Config2 = ensure_present([{address, Addr}, {port, Port}], Config),
-	    Config3 = [{reg_type, target_name} | Config2], 
-	    case snmpm_config:register_agent(UserId2, 
-					     TargetName, Config3) of
-		ok ->
-		    ok;
-		{error, Reason} ->
-		    error_msg("failed registering agent - "
-			      "handling agent "
-			      "~p <~p,~p>: ~n~w", 
-			      [TargetName, Addr, Port, Reason]),
-		    ok
+		    error_msg(
+		      "failed delivering ~w info to default user - "
+		      "regarding agent "
+		      "<~p,~p>: ~n~w", [Type, Domain, Addr, SnmpInfo])
 	    end;
 	
-	_Ignore ->
-	    ?vdebug("do_handle_agent -> ignore", []),
-	    ok
-
+	T:E ->
+	    CallbackArgs =
+		[Domain_or_Ip, Addr_or_Port, Type, SnmpInfo, DefData],
+	    handle_invalid_result(handle_agent, CallbackArgs, T, E)
+	    
     end.
 
 ensure_present([], Config) ->
@@ -2188,50 +2139,51 @@ ensure_present([{Key, _Val} = Elem|Ensure], Config) ->
     
 %% Retrieve user info for this agent.
 %% If this is an unknown agent, then use the default user
-handle_snmp_trap(#trappdu{enterprise    = Enteprise, 
-			  generic_trap  = Generic, 
-			  specific_trap = Spec,
-			  time_stamp    = Timestamp, 
-			  varbinds      = Varbinds} = Trap, 
-		 Addr, Port, State) ->
-
-    ?vtrace("handle_snmp_trap [trappdu] -> entry with"
-	    "~n   Addr: ~p"
-	    "~n   Port: ~p"
-	    "~n   Trap: ~p", [Addr, Port, Trap]),
+handle_snmp_trap(
+  #trappdu{enterprise    = Enteprise, 
+	   generic_trap  = Generic, 
+	   specific_trap = Spec,
+	   time_stamp    = Timestamp, 
+	   varbinds      = Varbinds} = Trap, Domain, Addr, State) ->
+
+    ?vtrace("handle_snmp_trap [trappdu] -> entry with~n"
+	    "   Domain:  ~p~n"
+	    "   Addr:    ~p~n"
+	    "   Trap:    ~p", [Domain, Addr, Trap]),
 
     Varbinds2 = fix_vbs_BITS(Varbinds), 
     SnmpTrapInfo = {Enteprise, Generic, Spec, Timestamp, Varbinds2},
-    do_handle_snmp_trap(SnmpTrapInfo, Addr, Port, State);
+    do_handle_snmp_trap(SnmpTrapInfo, Domain, Addr, State);
 
 handle_snmp_trap(#pdu{error_status = EStatus, 
 		      error_index  = EIndex, 
 		      varbinds     = Varbinds} = Trap, 
-		 Addr, Port, State) ->
+		 Domain, Addr, State) ->
 
-    ?vtrace("handle_snmp_trap [pdu] -> entry with"
-	    "~n   Addr: ~p"
-	    "~n   Port: ~p"
-	    "~n   Trap: ~p", [Addr, Port, Trap]),
+    ?vtrace("handle_snmp_trap [pdu] -> entry with~n"
+	    "   Domain:  ~p~n"
+	    "   Addr:    ~p~n"
+	    "   Trap:    ~p", [Domain, Addr, Trap]),
 
     Varbinds2 = fix_vbs_BITS(Varbinds), 
     SnmpTrapInfo = {EStatus, EIndex, Varbinds2},
-    do_handle_snmp_trap(SnmpTrapInfo, Addr, Port, State);
+    do_handle_snmp_trap(SnmpTrapInfo, Domain, Addr, State);
 
-handle_snmp_trap(CrapTrap, Addr, Port, _State) ->
+handle_snmp_trap(CrapTrap, Domain, Addr, _State) ->
     error_msg("received crap (snmp) trap from ~w:~w =>"
-	      "~p", [Addr, Port, CrapTrap]),
+	      "~p", [Domain, Addr, CrapTrap]),
     ok.
 
-do_handle_snmp_trap(SnmpTrapInfo, Addr, Port, State) ->
-    case snmpm_config:get_agent_user_info(Addr, Port) of
+do_handle_snmp_trap(SnmpTrapInfo, Domain, Addr, State) ->
+    case snmpm_config:get_agent_user_info(Domain, Addr) of
 	{ok, UserId, Target, RegType} ->
 	    ?vtrace("handle_snmp_trap -> found user: ~p", [UserId]), 
 	    case snmpm_config:user_info(UserId) of
 		{ok, Mod, Data} ->
-		    handle_trap(UserId, Mod, 
-				RegType, Target, Addr, Port, 
-				SnmpTrapInfo, Data, State);
+		    handle_trap(
+		      UserId, Mod, 
+		      RegType, Target, Domain, Addr,
+		      SnmpTrapInfo, Data, State);
 		
 		Error1 ->
 		    %% User no longer exists, unregister agent
@@ -2243,84 +2195,94 @@ do_handle_snmp_trap(SnmpTrapInfo, Addr, Port, State) ->
 			    %% Try use the default user
 			    case snmpm_config:user_info() of
 				{ok, DefUserId, DefMod, DefData} ->
-				    handle_agent(DefUserId, DefMod, 
-						 Addr, Port, 
-						 trap, ignore, 
-						 SnmpTrapInfo, DefData, State);
+				    handle_agent(
+				      DefUserId, DefMod, 
+				      Domain, Addr,
+				      trap, ignore, 
+				      SnmpTrapInfo, DefData, State);
 				Error2 ->
-				    error_msg("failed retreiving the default "
-					      "user info handling report from "
-					      "~p <~p,~p>: ~n~w~n~w",
-					      [Target, Addr, Port, 
-					       Error2, SnmpTrapInfo])
+				    error_msg(
+				      "failed retreiving the default "
+				      "user info handling report from "
+				      "~p <~p,~p>: ~n~w~n~w",
+				      [Target, Domain, Addr,
+				       Error2, SnmpTrapInfo])
 			    end;
 			Error3 ->
 			    %% Failed unregister agent, 
 			    %% now its getting messy...
-			    warning_msg("failed unregister agent ~p <~p,~p> "
-					"belonging to non-existing "
-					"user ~p, handling trap: "
-					"~n   Error:     ~w"
-					"~n   Trap info: ~w",
-					[Target, Addr, Port, UserId, 
-					 Error3, SnmpTrapInfo])
+			    warning_msg(
+			      "failed unregister agent ~p <~p,~p> "
+			      "belonging to non-existing "
+			      "user ~p, handling trap: "
+			      "~n   Error:     ~w"
+			      "~n   Trap info: ~w",
+			      [Target, Domain, Addr, UserId,
+			       Error3, SnmpTrapInfo])
 		    end
 	    end;
 	
 	Error4 ->
 	    %% Unknown agent, pass it on to the default user
 	    ?vlog("[trap] failed retreiving user id for agent <~p,~p>: "
-		  "~n   ~p", [Addr, Port, Error4]),
+		  "~n   ~p", [Domain, Addr, Error4]),
 	    case snmpm_config:user_info() of
 		{ok, DefUserId, DefMod, DefData} ->
-		    handle_agent(DefUserId, DefMod, 
-				 Addr, Port, 
-				 trap, ignore, 
-				 SnmpTrapInfo, DefData, State);
+		    handle_agent(
+		      DefUserId, DefMod, 
+		      Domain, Addr,
+		      trap, ignore, 
+		      SnmpTrapInfo, DefData, State);
 		Error5 ->
-		    error_msg("failed retreiving "
-			      "the default user info handling trap from "
-			      "<~p,~p>: ~n~w~n~w",
-			      [Addr, Port, Error5, SnmpTrapInfo])
+		    error_msg(
+		      "failed retreiving "
+		      "the default user info handling trap from "
+		      "<~p,~p>: ~n~w~n~w",
+		      [Domain, Addr, Error5, SnmpTrapInfo])
 	    end
     end,
     ok.
 
 
-handle_trap(UserId, Mod, 
-	    RegType, Target, Addr, Port, SnmpTrapInfo, Data, State) ->
+handle_trap(
+  UserId, Mod, RegType, Target, Domain, Addr, SnmpTrapInfo, Data, State) ->
     ?vtrace("handle_trap -> entry with"
 	    "~n   UserId: ~p"
 	    "~n   Mod:    ~p", [UserId, Mod]),
     F = fun() ->
-		do_handle_trap(UserId, Mod, 
-			       RegType, Target, Addr, Port, 
-			       SnmpTrapInfo, Data, State)
+		do_handle_trap(
+		  UserId, Mod, 
+		  RegType, Target, Domain, Addr,
+		  SnmpTrapInfo, Data, State)
 	end,
     handle_callback(F),
     ok.
     
 
-do_handle_trap(UserId, Mod, 
-	       RegType, Target, Addr, Port, SnmpTrapInfo, Data, _State) ->
+do_handle_trap(
+  UserId, Mod, RegType, Target, Domain, Addr, SnmpTrapInfo, Data, _State) ->
     ?vdebug("do_handle_trap -> entry with"
 	    "~n   UserId: ~p", [UserId]),
-    HandleTrap = 
+    {HandleTrap, CallbackArgs} = 
 	case RegType of
 	    target_name ->
-		fun() -> Mod:handle_trap(Target, SnmpTrapInfo, Data) end;
+		{fun() -> Mod:handle_trap(Target, SnmpTrapInfo, Data) end, 
+		 [Target, SnmpTrapInfo, Data]};
 	    addr_port ->
-		fun() -> Mod:handle_trap(Addr, Port, SnmpTrapInfo, Data) end
+		{Ip, Port} = Addr,
+		{fun() -> Mod:handle_trap(Ip, Port, SnmpTrapInfo, Data) end, 
+		 [Ip, Port, SnmpTrapInfo, Data]}
 	end,
 
-    case (catch HandleTrap()) of
+    try HandleTrap() of
 	{register, UserId2, Config} -> 
 	    ?vtrace("do_handle_trap -> register: "
 		    "~n   UserId2: ~p"
 		    "~n   Config:  ~p", [UserId2, Config]),
-	    Target2 = mk_target_name(Addr, Port, Config),
-	    Config2 = [{reg_type, target_name}, 
-		       {address, Addr}, {port, Port} | Config], 
+	    Target2 = mk_target_name(Domain, Addr, Config),
+	    Config2 =
+		[{reg_type, target_name}, 
+		 {tdomain, Domain}, {taddress, Addr} | Config],
 	    case snmpm_config:register_agent(UserId2, Target2, Config2) of
 		ok ->
 		    ok;
@@ -2328,7 +2290,7 @@ do_handle_trap(UserId, Mod,
 		    error_msg("failed registering agent "
 			      "handling trap "
 			      "<~p,~p>: ~n~w", 
-			      [Addr, Port, Reason]),
+			      [Domain, Addr, Reason]),
 		    ok
 	    end;
 	{register, UserId2, Target2, Config} -> 
@@ -2346,50 +2308,59 @@ do_handle_trap(UserId, Mod,
 		    error_msg("failed registering agent "
 			      "handling trap "
 			      "~p <~p,~p>: ~n~w", 
-			      [Target2, Addr, Port, Reason]),
+			      [Target2, Domain, Addr, Reason]),
 		    reply
 	    end;
 	unregister ->
 	    ?vtrace("do_handle_trap -> unregister", []),
-	    case snmpm_config:unregister_agent(UserId, 
-					       Addr, Port) of
+	    case snmpm_config:unregister_agent(UserId, Domain, Addr) of
 		ok ->
 		    ok;
 		{error, Reason} ->
 		    error_msg("failed unregistering agent "
 			      "handling trap "
 			      "<~p,~p>: ~n~w", 
-			      [Addr, Port, Reason]),
+			      [Domain, Addr, Reason]),
 		    ok
 	    end;	    
-	_Ignore ->
+	ignore ->
 	    ?vtrace("do_handle_trap -> ignore", []),
-	    ok
+	    ok;
+
+	InvalidResult ->
+	    handle_invalid_result(handle_trap, CallbackArgs, InvalidResult)
+
+    catch
+	T:E ->
+	    handle_invalid_result(handle_trap, CallbackArgs, T, E)
+
     end.
 
 
-handle_snmp_inform(Ref, 
-		   #pdu{error_status = EStatus, 
-			error_index  = EIndex, 
-			varbinds     = Varbinds} = Pdu, Addr, Port, State) ->
+handle_snmp_inform(
+  Ref, 
+  #pdu{error_status = EStatus, 
+       error_index  = EIndex, 
+       varbinds     = Varbinds} = Pdu, Domain, Addr, State) ->
  
-    ?vtrace("handle_snmp_inform -> entry with"
-	    "~n   Addr: ~p"
-	    "~n   Port: ~p"
-	    "~n   Pdu:  ~p", [Addr, Port, Pdu]),
+    ?vtrace("handle_snmp_inform -> entry with~n"
+	    "   Domain:  ~p~n"
+	    "   Addr:    ~p~n"
+	    "   Pdu:     ~p", [Domain, Addr, Pdu]),
 
     Varbinds2 = fix_vbs_BITS(Varbinds), 
     SnmpInform = {EStatus, EIndex, Varbinds2},
-    case snmpm_config:get_agent_user_info(Addr, Port) of
+    case snmpm_config:get_agent_user_info(Domain, Addr) of
 	{ok, UserId, Target, RegType} ->
 	    case snmpm_config:user_info(UserId) of
 		{ok, Mod, Data} ->
 		    ?vdebug("[inform] callback handle_inform with: "
 			    "~n   UserId: ~p"
 			    "~n   Mod:    ~p", [UserId, Mod]),
-		    handle_inform(UserId, Mod, Ref, 
-				  RegType, Target, Addr, Port, 
-				  SnmpInform, Data, State);
+		    handle_inform(
+		      UserId, Mod, Ref, 
+		      RegType, Target, Domain, Addr,
+		      SnmpInform, Data, State);
 		Error1 ->
 		    %% User no longer exists, unregister agent
 		    case snmpm_config:unregister_agent(UserId, Target) of
@@ -2400,15 +2371,16 @@ handle_snmp_inform(Ref,
 				  "~n   ~p", [UserId, Error1]),
 			    case snmpm_config:user_info() of
 				{ok, DefUserId, DefMod, DefData} ->
-				    handle_agent(DefUserId, DefMod, 
-						 Addr, Port,
-						 inform, Ref, 
-						 SnmpInform, DefData, State);
+				    handle_agent(
+				      DefUserId, DefMod, 
+				      Domain, Addr,
+				      inform, Ref, 
+				      SnmpInform, DefData, State);
 				Error2 ->
 				    error_msg("failed retreiving the default "
 					      "user info handling inform from "
 					      "~p <~p,~p>: ~n~w~n~w",
-					      [Target, Addr, Port, 
+					      [Target, Domain, Addr,
 					       Error2, Pdu])
 			    end;
 			Error3 ->
@@ -2419,7 +2391,7 @@ handle_snmp_inform(Ref,
 					"user ~p, handling inform: "
 					"~n   Error: ~w"
 					"~n   Pdu:   ~w",
-					[Target, Addr, Port, UserId, 
+					[Target, Domain, Addr, UserId,
 					 Error3, Pdu])
 		    end
 	    end;
@@ -2427,63 +2399,72 @@ handle_snmp_inform(Ref,
 	Error4 ->
 	    %% Unknown agent, pass it on to the default user
 	    ?vlog("[inform] failed retreiving user id for agent <~p,~p>: "
-		  "~n   ~p", [Addr, Port, Error4]),
+		  "~n   ~p", [Domain, Addr, Error4]),
 	    case snmpm_config:user_info() of
 		{ok, DefUserId, DefMod, DefData} ->
-		    handle_agent(DefUserId, DefMod, 
-				 Addr, Port, 
-				 inform, Ref, 
-				 SnmpInform, DefData, State);
+		    handle_agent(
+		      DefUserId, DefMod, 
+		      Domain, Addr,
+		      inform, Ref, 
+		      SnmpInform, DefData, State);
 		Error5 ->
 		    error_msg("failed retreiving "
 			      "the default user info handling inform from "
 			      "<~p,~p>: ~n~w~n~w",
-			      [Addr, Port, Error5, Pdu])
+			      [Domain, Addr, Error5, Pdu])
 	    end
     end,
     ok;
 
-handle_snmp_inform(_Ref, CrapInform, Addr, Port, _State) ->
+handle_snmp_inform(_Ref, CrapInform, Domain, Addr, _State) ->
     error_msg("received crap (snmp) inform from ~w:~w =>"
-	      "~p", [Addr, Port, CrapInform]),
+	      "~p", [Domain, Addr, CrapInform]),
     ok.
 
-handle_inform(UserId, Mod, Ref, 
-	      RegType, Target, Addr, Port, SnmpInform, Data, State) ->
+handle_inform(
+  UserId, Mod, Ref, 
+  RegType, Target, Domain, Addr, SnmpInform, Data, State) ->
     ?vtrace("handle_inform -> entry with"
 	    "~n   UserId: ~p"
 	    "~n   Mod:    ~p", [UserId, Mod]),
     F = fun() ->
-		do_handle_inform(UserId, Mod, Ref, 
-				 RegType, Target, Addr, Port, SnmpInform, 
-				 Data, State)
+		do_handle_inform(
+		  UserId, Mod, Ref, 
+		  RegType, Target, Domain, Addr, SnmpInform,
+		  Data, State)
 	end,
     handle_callback(F),
     ok.
 
-do_handle_inform(UserId, Mod, Ref, 
-		 RegType, Target, Addr, Port, SnmpInform, Data, State) ->
+do_handle_inform(
+  UserId, Mod, Ref, 
+  RegType, Target, Domain, Addr, SnmpInform, Data, State) ->
     ?vdebug("do_handle_inform -> entry with"
 	    "~n   UserId: ~p", [UserId]),
-    HandleInform = 
+    {HandleInform, CallbackArgs} = 
 	case RegType of
 	    target_name ->
-		fun() -> Mod:handle_inform(Target, SnmpInform, Data) end;
+		{fun() -> Mod:handle_inform(Target, SnmpInform, Data) end, 
+		 [Target, SnmpInform, Data]};
 	    addr_port ->
-		fun() -> Mod:handle_inform(Addr, Port, SnmpInform, Data) end
+		{Ip, Port} = Addr,
+		{fun() -> Mod:handle_inform(Ip, Port, SnmpInform, Data) end, 
+		 [Ip, Port, SnmpInform, Data]}
 	end,
 
      Rep = 
-	case (catch HandleInform()) of
+	try HandleInform() of
 	    {register, UserId2, Config} -> 
 		?vtrace("do_handle_inform -> register: "
 			"~n   UserId2: ~p"
 			"~n   Config:  ~p", [UserId2, Config]),
 		%% The only user which would do this is the
 		%% default user
-		Target2 = mk_target_name(Addr, Port, Config),
-		Config2 = [{reg_type, target_name}, 
-			   {address, Addr}, {port, Port} | Config], 
+		Target2 = mk_target_name(Domain, Addr, Config),
+		Config2 =
+		    [{reg_type, target_name} |
+		     ensure_present(
+		       [{tdomain, Domain}, {taddress, Addr}], Config)],
 		case snmpm_config:register_agent(UserId2, Target2, Config2) of
 		    ok ->
 			reply;
@@ -2491,9 +2472,10 @@ do_handle_inform(UserId, Mod, Ref,
 			error_msg("failed registering agent "
 				  "handling inform "
 				  "~p <~p,~p>: ~n~w", 
-				  [Target2, Addr, Port, Reason]),
+				  [Target2, Domain, Addr, Reason]),
 			reply
 		end;
+
 	    {register, UserId2, Target2, Config} -> 
 		?vtrace("do_handle_inform -> register: "
 			"~n   UserId2: ~p"
@@ -2509,54 +2491,71 @@ do_handle_inform(UserId, Mod, Ref,
 			error_msg("failed registering agent "
 				  "handling inform "
 				  "~p <~p,~p>: ~n~w", 
-				  [Target2, Addr, Port, Reason]),
+				  [Target2, Domain, Addr, Reason]),
 			reply
 		end;
+
 	    unregister ->
 		?vtrace("do_handle_inform -> unregister", []),
-		case snmpm_config:unregister_agent(UserId, 
-						   Addr, Port) of
+		case snmpm_config:unregister_agent(
+		       UserId, Domain, Addr) of
 		    ok ->
 			reply;
 		    {error, Reason} ->
 			error_msg("failed unregistering agent "
 				  "handling inform "
 				  "<~p,~p>: ~n~w", 
-				  [Addr, Port, Reason]),
+				  [Domain, Addr, Reason]),
 			reply
 		end;	    
+
 	    no_reply ->
 		?vtrace("do_handle_inform -> no_reply", []),
 		no_reply;
-	    _Ignore ->
+
+	    ignore ->
 		?vtrace("do_handle_inform -> ignore", []),
+		reply;
+
+	    InvalidResult ->
+		handle_invalid_result(
+		  handle_inform, CallbackArgs, InvalidResult), 
 		reply
+
+	catch
+	    T:E ->
+		handle_invalid_result(handle_inform, CallbackArgs, T, E), 
+		reply
+
 	end,
-    handle_inform_response(Rep, Ref, Addr, Port, State),
+    handle_inform_response(Rep, Ref, Domain, Addr, State),
     ok.
 
 
-handle_inform_response(_, ignore, _Addr, _Port, _State) ->
+handle_inform_response(_, ignore, _Domain, _Addr, _State) ->
     ignore;
-handle_inform_response(no_reply, _Ref, _Addr, _Port, _State) ->
+handle_inform_response(no_reply, _Ref, _Domain, _Addr, _State) ->
     no_reply;
-handle_inform_response(_, Ref, Addr, Port, 
-		       #state{net_if = Pid, net_if_mod = Mod}) ->
+handle_inform_response(
+  _, Ref, Domain, Addr,
+  #state{net_if = Pid, net_if_mod = Mod}) ->
     ?vdebug("handle_inform -> response", []),
-    (catch Mod:inform_response(Pid, Ref, Addr, Port)).
+    (catch Mod:inform_response(Pid, Ref, Domain, Addr)).
     
-handle_snmp_report(#pdu{error_status = EStatus, 
-			error_index  = EIndex, 
-			varbinds     = Varbinds} = Pdu, Addr, Port, State) ->
+handle_snmp_report(
+  #pdu{error_status = EStatus,
+       error_index  = EIndex,
+       varbinds     = Varbinds} = Pdu,
+  Domain, Addr, State) ->
 
-    ?vtrace("handle_snmp_report -> entry with"
-	    "~n   Addr: ~p"
-	    "~n   Port: ~p"
-	    "~n   Pdu:  ~p", [Addr, Port, Pdu]),
+    ?vtrace("handle_snmp_report -> entry with~n"
+	    "   Domain:  ~p~n"
+	    "   Addr:    ~p~n"
+	    "   Pdu:     ~p", [Domain, Addr, Pdu]),
 
     Varbinds2  = fix_vbs_BITS(Varbinds), 
     SnmpReport = {EStatus, EIndex, Varbinds2},
-    case snmpm_config:get_agent_user_info(Addr, Port) of
+    case snmpm_config:get_agent_user_info(Domain, Addr) of
  	{ok, UserId, Target, RegType} ->
  	    case snmpm_config:user_info(UserId) of
  		{ok, Mod, Data} ->
@@ -2566,7 +2565,7 @@ handle_snmp_report(#pdu{error_status = EStatus,
  			    "~n   ~p"
  			    "~n   ~p", [UserId, Mod, Target, SnmpReport]),
  		    handle_report(UserId, Mod, 
-				  RegType, Target, Addr, Port, 
+				  RegType, Target, Domain, Addr,
 				  SnmpReport, Data, State);
  		Error1 ->
 		    %% User no longer exists, unregister agent
@@ -2579,7 +2578,7 @@ handle_snmp_report(#pdu{error_status = EStatus,
 			    case snmpm_config:user_info() of
 				{ok, DefUserId, DefMod, DefData} ->
 				    handle_agent(DefUserId, DefMod, 
-						 Addr, Port, 
+						 Domain, Addr,
 						 report, ignore, 
 						 SnmpReport, DefData, State);
 				
@@ -2587,7 +2586,7 @@ handle_snmp_report(#pdu{error_status = EStatus,
 				    error_msg("failed retreiving the default "
 					      "user info handling report from "
 					      "~p <~p,~p>: ~n~w~n~w",
-					      [Target, Addr, Port, 
+					      [Target, Domain, Addr,
 					       Error2, Pdu])
 			    end;
 			Error3 ->
@@ -2598,7 +2597,7 @@ handle_snmp_report(#pdu{error_status = EStatus,
 					"user ~p, handling report: "
 					"~n   Error:  ~w"
 					"~n   Report: ~w",
-					[Target, Addr, Port, UserId, 
+					[Target, Domain, Addr, UserId,
 					 Error3, Pdu])
 		    end
 	    end;
@@ -2606,25 +2605,25 @@ handle_snmp_report(#pdu{error_status = EStatus,
 	Error4 ->
 	    %% Unknown agent, pass it on to the default user
 	    ?vlog("[report] failed retreiving user id for agent <~p,~p>: "
-		  "~n   ~p", [Addr, Port, Error4]),
+		  "~n   ~p", [Domain, Addr, Error4]),
 	    case snmpm_config:user_info() of
 		{ok, DefUserId, DefMod, DefData} ->
 		    handle_agent(DefUserId, DefMod, 
-				 Addr, Port, 
+				 Domain, Addr,
 				 report, ignore, 
 				 SnmpReport, DefData, State);
 		Error5 ->
 		    error_msg("failed retreiving "
 			      "the default user info handling report from "
 			      "<~p,~p>: ~n~w~n~w",
-			      [Addr, Port, Error5, Pdu])
+			      [Domain, Addr, Error5, Pdu])
 	    end
     end,
     ok;
 
-handle_snmp_report(CrapReport, Addr, Port, _State) ->
+handle_snmp_report(CrapReport, Domain, Addr, _State) ->
     error_msg("received crap (snmp) report from ~w:~w =>"
-	      "~p", [Addr, Port, CrapReport]),
+	      "~p", [Domain, Addr, CrapReport]),
     ok.
 
 %% This could be from a failed get-request, so we might have a user
@@ -2632,20 +2631,20 @@ handle_snmp_report(CrapReport, Addr, Port, _State) ->
 %% get-response (except for tha data which is different). Otherwise,
 %% we handle it as an error (reported via the handle_error callback
 %% function).
-handle_snmp_report(ReqId, 
-		   #pdu{error_status = EStatus, 
-			error_index  = EIndex, 
-			varbinds     = Varbinds} = Pdu, 
-		   {ReportReason, Info} = Rep, 
-		   Addr, Port, State) 
-  when is_integer(ReqId) ->
-
-    ?vtrace("handle_snmp_report -> entry with"
-	    "~n   Addr:   ~p"
-	    "~n   Port:   ~p"
-	    "~n   ReqId:  ~p"
-	    "~n   Rep:    ~p"
-	    "~n   Pdu:    ~p", [Addr, Port, ReqId, Rep, Pdu]),
+handle_snmp_report(
+  ReqId,
+  #pdu{error_status = EStatus,
+       error_index  = EIndex,
+       varbinds     = Varbinds} = Pdu,
+  {ReportReason, Info} = Rep,
+  Domain, Addr, State) when is_integer(ReqId) ->
+
+    ?vtrace("handle_snmp_report -> entry with~n"
+	    "   Domain:  ~p~n"
+	    "   Addr:    ~p~n"
+	    "   ReqId:   ~p~n"
+	    "   Rep:     ~p~n"
+	    "   Pdu:     ~p", [Domain, Addr, ReqId, Rep, Pdu]),
 
     Varbinds2 = fix_vbs_BITS(Varbinds), 
     SnmpReport = {EStatus, EIndex, Varbinds2},
@@ -2690,7 +2689,7 @@ handle_snmp_report(ReqId,
 	    %% Either not a sync request or no such request. Either
 	    %% way, this is error info, so handle it as such.
 
-	    case snmpm_config:get_agent_user_id(Addr, Port) of
+	    case snmpm_config:get_agent_user_id(Domain, Addr) of
 		{ok, UserId} ->
 		    case snmpm_config:user_info(UserId) of
 			{ok, Mod, Data} ->
@@ -2714,7 +2713,7 @@ handle_snmp_report(ReqId,
 					      "default user "
 					      "info handling report from "
 					      "<~p,~p>: ~n~w~n~w~n~w",
-					      [Addr, Port, Error, 
+					      [Domain, Addr, Error,
 					       ReqId, Reason])
 			    end
 		    end;
@@ -2722,7 +2721,7 @@ handle_snmp_report(ReqId,
 		    %% Unknown agent, pass it on to the default user
 		    ?vlog("[report] failed retreiving user id for "
 			  "agent <~p,~p>: "
-			  "~n   ~p", [Addr, Port, Error]),
+			  "~n   ~p", [Domain, Addr, Error]),
 		    case snmpm_config:user_info() of
 			{ok, DefUserId, DefMod, DefData} ->
 			    handle_error(DefUserId, DefMod, Reason, ReqId, 
@@ -2732,62 +2731,71 @@ handle_snmp_report(ReqId,
 				      "the default user info handling "
 				      "report from "
 				      "<~p,~p>: ~n~w~n~w~n~w",
-				      [Addr, Port, Error, ReqId, Reason])
+				      [Domain, Addr, Error, ReqId, Reason])
 		    end
 	    end
     end,
     ok;
 
-handle_snmp_report(CrapReqId, CrapReport, CrapInfo, Addr, Port, _State) ->
-    error_msg("received crap (snmp) report from ~w:~w =>"
-	      "~n~p~n~p~n~p", [Addr, Port, CrapReqId, CrapReport, CrapInfo]),
+handle_snmp_report(CrapReqId, CrapReport, CrapInfo, Domain, Addr, _State) ->
+    error_msg(
+      "received crap (snmp) report from ~w:~w =>"
+      "~n~p~n~p~n~p",
+      [Domain, Addr, CrapReqId, CrapReport, CrapInfo]),
     ok.
    
 
-handle_report(UserId, Mod, RegType, Target, Addr, Port, 
+handle_report(UserId, Mod, RegType, Target, Domain, Addr,
 	      SnmpReport, Data, State) ->
     ?vtrace("handle_report -> entry with"
 	    "~n   UserId: ~p"
 	    "~n   Mod:    ~p", [UserId, Mod]),
     F = fun() ->
-		do_handle_report(UserId, Mod, RegType, Target, Addr, Port, 
-				 SnmpReport, Data, State)
+		do_handle_report(
+		  UserId, Mod, RegType, Target, Domain, Addr,
+		  SnmpReport, Data, State)
 	end,
     handle_callback(F),
     ok.
 
-do_handle_report(UserId, Mod, 
-		 RegType, Target, Addr, Port, SnmpReport, Data, _State) ->
+do_handle_report(
+  UserId, Mod, RegType, Target, Domain, Addr,
+  SnmpReport, Data, _State) ->
     ?vdebug("do_handle_report -> entry with"
 	    "~n   UserId: ~p", [UserId]),
-    HandleReport = 
+    {HandleReport, CallbackArgs} = 
 	case RegType of
 	    target_name ->
-		fun() -> Mod:handle_report(Target, SnmpReport, Data) end;
+		{fun() -> Mod:handle_report(Target, SnmpReport, Data) end, 
+		 [Target, SnmpReport, Data]};
 	    addr_port ->
-		fun() -> Mod:handle_report(Addr, Port, SnmpReport, Data) end
+		{Ip, Port} = Addr,
+		{fun() -> Mod:handle_report(Ip, Port, SnmpReport, Data) end,
+		 [Ip, Port, SnmpReport, Data]}
 	end,
 
-    case (catch HandleReport()) of
+    try HandleReport() of
 	{register, UserId2, Config} -> 
 	    ?vtrace("do_handle_report -> register: "
 		    "~n   UserId2: ~p"
 		    "~n   Config:  ~p", [UserId2, Config]),
 	    %% The only user which would do this is the
 	    %% default user
-	    Target2 = mk_target_name(Addr, Port, Config),
-	    Config2 = [{reg_type, target_name}, 
-		       {address, Addr}, {port, Port} | Config], 
+	    Target2 = mk_target_name(Domain, Addr, Config),
+	    Config2 =
+		[{reg_type, target_name},
+		 {tdomain, Domain}, {taddress, Addr} | Config],
 	    case snmpm_config:register_agent(UserId2, Target2, Config2) of
 		ok ->
 		    ok;
 		{error, Reason} ->
 		    error_msg("failed registering agent "
 			      "handling report "
-			      "<~p,~p>: ~n~w", 
-			      [Addr, Port, Reason]),
+			      "<~p,~p>: ~n~w",
+			      [Domain, Addr, Reason]),
 		    ok
 	    end;
+
 	{register, UserId2, Target2, Config} -> 
 	    ?vtrace("do_handle_report -> register: "
 		    "~n   UserId2: ~p"
@@ -2803,25 +2811,36 @@ do_handle_report(UserId, Mod,
 		    error_msg("failed registering agent "
 			      "handling report "
 			      "~p <~p,~p>: ~n~w", 
-			      [Target2, Addr, Port, Reason]),
+			      [Target2, Domain, Addr, Reason]),
 		    reply
 	    end;
+
 	unregister ->
 	    ?vtrace("do_handle_trap -> unregister", []),
-	    case snmpm_config:unregister_agent(UserId, 
-					       Addr, Port) of
+	    case snmpm_config:unregister_agent(UserId, Domain, Addr) of
 		ok ->
 		    ok;
 		{error, Reason} ->
 		    error_msg("failed unregistering agent "
 			      "handling report "
 			      "<~p,~p>: ~n~w", 
-			      [Addr, Port, Reason]),
+			      [Domain, Addr, Reason]),
 		    ok
 	    end;	    
-	_Ignore ->
+
+	ignore ->
 	    ?vtrace("do_handle_report -> ignore", []),
-	    ok
+	    ok;
+
+	InvalidResult ->
+	    handle_invalid_result(handle_report, CallbackArgs, InvalidResult), 
+	    reply
+
+    catch
+	T:E ->
+	    handle_invalid_result(handle_report, CallbackArgs, T, E),
+	    reply
+
     end.
 
 
@@ -2835,6 +2854,25 @@ handle_callback(F) ->
       end).
 
     
+
+handle_invalid_result(Func, Args, T, E) ->
+    Stacktrace = ?STACK(), 
+    error_msg("Callback function failed: "
+	      "~n   Function:   ~p"
+	      "~n   Args:       ~p"
+	      "~n   Error Type: ~p"
+	      "~n   Error:      ~p"
+	      "~n   Stacktrace: ~p", 
+	      [Func, Args, T, E, Stacktrace]). 
+
+handle_invalid_result(Func, Args, InvalidResult) ->
+    error_msg("Callback function returned invalid result: "
+	      "~n   Function:       ~p"
+	      "~n   Args:           ~p"
+	      "~n   Invalid result: ~p", 
+	      [Func, Args, InvalidResult]).
+
+	    
 handle_down(MonRef) ->
     (catch do_handle_down(MonRef)).
 
@@ -2895,7 +2933,7 @@ cancel_timer(Ref) ->
 
 handle_gc(GCT) ->
     ets:safe_fixtable(snmpm_request_table, true),
-    case do_gc(ets:first(snmpm_request_table), t()) of
+    case do_gc(ets:first(snmpm_request_table), snmp_misc:now(ms)) of
 	0 ->
 	    gct_deactivate(GCT);
 	_ ->
@@ -2924,69 +2962,56 @@ do_gc(Key, Now) ->
 %% 
 %%----------------------------------------------------------------------
 
-send_get_request(Oids, Vsn, MsgData, Domain, Addr, Port, ExtraInfo, 
+send_get_request(Oids, Vsn, MsgData, Domain, Addr, ExtraInfo,
 		 #state{net_if     = NetIf, 
 			net_if_mod = Mod,
 			mini_mib   = MiniMIB}) ->
     Pdu = make_pdu(get, Oids, MiniMIB),
-    ?vtrace("send_get_request -> send get-request:"
-	    "~n   Mod:     ~p"
-	    "~n   NetIf:   ~p"
-	    "~n   Pdu:     ~p"
-	    "~n   Vsn:     ~p"
-	    "~n   MsgData: ~p"
-	    "~n   Domain:  ~p"
-	    "~n   Addr:    ~p"
-	    "~n   Port:    ~p", 
-	    [Mod, NetIf, Pdu, Vsn, MsgData, Domain, Addr, Port]),
+    ?vtrace("send_get_request -> send get-request:~n"
+	    "   Mod:     ~p~n"
+	    "   NetIf:   ~p~n"
+	    "   Pdu:     ~p~n"
+	    "   Vsn:     ~p~n"
+	    "   MsgData: ~p~n"
+	    "   Domain:  ~p~n"
+	    "   Addr:    ~p",
+	    [Mod, NetIf, Pdu, Vsn, MsgData, Domain, Addr]),
     Res = (catch Mod:send_pdu(NetIf, Pdu, Vsn, MsgData, 
-			      Domain, Addr, Port, ExtraInfo)),
+			      Domain, Addr, ExtraInfo)),
     ?vtrace("send_get_request -> send result:"
 	    "~n   ~p", [Res]),
     Pdu#pdu.request_id.
 
-send_get_next_request(Oids, Vsn, MsgData, Domain, Addr, Port, ExtraInfo, 
+send_get_next_request(Oids, Vsn, MsgData, Domain, Addr, ExtraInfo,
 		      #state{mini_mib   = MiniMIB, 
 			     net_if     = NetIf, 
 			     net_if_mod = Mod}) ->
     Pdu = make_pdu(get_next, Oids, MiniMIB),
-    Mod:send_pdu(NetIf, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo),
+    Mod:send_pdu(NetIf, Pdu, Vsn, MsgData, Domain, Addr, ExtraInfo),
     Pdu#pdu.request_id.
 
-send_get_bulk_request(Oids, Vsn, MsgData, Domain, Addr, Port, 
+send_get_bulk_request(Oids, Vsn, MsgData, Domain, Addr,
 		      NonRep, MaxRep, ExtraInfo, 
 		      #state{mini_mib   = MiniMIB, 
 			     net_if     = NetIf, 
 			     net_if_mod = Mod}) ->
     Pdu = make_pdu(bulk, {NonRep, MaxRep, Oids}, MiniMIB),
-    Mod:send_pdu(NetIf, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo),
+    Mod:send_pdu(NetIf, Pdu, Vsn, MsgData, Domain, Addr, ExtraInfo),
     Pdu#pdu.request_id.
 
-send_set_request(VarsAndVals, Vsn, MsgData, Domain, Addr, Port, ExtraInfo, 
+send_set_request(VarsAndVals, Vsn, MsgData, Domain, Addr, ExtraInfo,
 		 #state{mini_mib   = MiniMIB,
 			net_if     = NetIf, 
 			net_if_mod = Mod}) ->
     Pdu = make_pdu(set, VarsAndVals, MiniMIB),
-    Mod:send_pdu(NetIf, Pdu, Vsn, MsgData, Domain, Addr, Port, ExtraInfo),
+    Mod:send_pdu(NetIf, Pdu, Vsn, MsgData, Domain, Addr, ExtraInfo),
     Pdu#pdu.request_id.
 
-%% send_discovery(Vsn, MsgData, Addr, Port, ExtraInfo, 
-%% 	       #state{net_if     = NetIf, 
-%% 		      net_if_mod = Mod}) ->
-%%     Pdu = make_discovery_pdu(),
-%%     Mod:send_pdu(NetIf, Pdu, Vsn, MsgData, Addr, Port, ExtraInfo),
-%%     Pdu#pdu.request_id.
-							  
-
 
 %%----------------------------------------------------------------------
 %% 
 %%----------------------------------------------------------------------
 
-%% make_discovery_pdu() ->
-%%     Oids = [?sysObjectID_instance, ?sysDescr_instance, ?sysUpTime_instance],
-%%     make_pdu_impl(get, Oids).
-
 make_pdu(set, VarsAndVals, MiniMIB) ->
     VBs = [var_and_value_to_varbind(VAV, MiniMIB) || VAV <- VarsAndVals],
     make_pdu_impl(set, VBs);
@@ -3203,10 +3228,9 @@ agent_data(TargetName, SendOpts) ->
 			{Comm, SecModel}
 		end,
 	    Domain  = agent_data_item(tdomain,  TargetName),
-	    Addr    = agent_data_item(address,  TargetName),
-	    Port    = agent_data_item(port,     TargetName),
+	    Addr    = agent_data_item(taddress, TargetName),
 	    RegType = agent_data_item(reg_type, TargetName),
-	    {ok, RegType, Domain, Addr, Port, version(Version), MsgData};
+	    {ok, RegType, Domain, Addr, version(Version), MsgData};
 	Error ->
 	    Error
     end.
@@ -3270,7 +3294,7 @@ gct_init(#gct{parent = Parent, timeout = Timeout} = State) ->
     gct(State, Timeout).
 
 gct(#gct{parent = Parent, state = active} = State, Timeout) ->
-    T = t(),
+    T = snmp_misc:now(ms),
     receive
 	{stop, Parent} ->
 	    ok;
@@ -3328,7 +3352,7 @@ gct(#gct{parent = Parent, state = idle} = State, Timeout) ->
     end.
 
 new_timeout(T1, T2) ->
-    case T1 - (t() - T2) of
+    case T1 - (snmp_misc:now(ms) - T2) of
 	T when (T > 0) ->
 	    T;
 	_ ->
@@ -3348,13 +3372,8 @@ maybe_demonitor(undefined) ->
 maybe_demonitor(MonRef) ->
     erlang:demonitor(MonRef).
 
-%% Time in milli seconds
-t() ->
-    {A,B,C} = erlang:now(),
-    A*1000000000+B*1000+(C div 1000).
-    
-mk_target_name(Addr, Port, Config) ->
-    snmpm_config:mk_target_name(Addr, Port, Config).
+mk_target_name(Domain, Addr, Config) ->
+    snmpm_config:mk_target_name(Domain, Addr, Config).
 
 default_agent_config() ->
     case snmpm_config:agent_info() of
@@ -3391,12 +3410,6 @@ call(Req) ->
 call(Req, To) ->
     gen_server:call(?SERVER, Req, To).
 
-%% cast(Msg) ->
-%%     gen_server:cast(?SERVER, Msg).
-
-%% info_msg(F, A) ->
-%%     ?snmpm_info("Server: " ++ F, A).
-
 warning_msg(F, A) ->
     ?snmpm_warning("Server: " ++ F, A).
 
@@ -3472,20 +3485,3 @@ note_store_info(Pid) ->
 
 
 %%----------------------------------------------------------------------
-
-
-%%----------------------------------------------------------------------
-%% Debug
-%%----------------------------------------------------------------------
-
-% sz(L) when is_list(L) ->
-%     length(lists:flatten(L));
-% sz(B) when is_binary(B) ->
-%     size(B).
-
-%% p(F) ->
-%%     p(F, []).
-
-%% p(F, A) ->
-%%     io:format("~w:" ++ F ++ "~n", [?MODULE | A]).
-
diff --git a/lib/snmp/src/manager/snmpm_server_sup.erl b/lib/snmp/src/manager/snmpm_server_sup.erl
index 16238e4aaf..842a5761ce 100644
--- a/lib/snmp/src/manager/snmpm_server_sup.erl
+++ b/lib/snmp/src/manager/snmpm_server_sup.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/manager/snmpm_supervisor.erl b/lib/snmp/src/manager/snmpm_supervisor.erl
index 8f43310c14..c36bbe1bdd 100644
--- a/lib/snmp/src/manager/snmpm_supervisor.erl
+++ b/lib/snmp/src/manager/snmpm_supervisor.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/manager/snmpm_user.erl b/lib/snmp/src/manager/snmpm_user.erl
index 78aa560b2e..c0100d372f 100644
--- a/lib/snmp/src/manager/snmpm_user.erl
+++ b/lib/snmp/src/manager/snmpm_user.erl
@@ -1,97 +1,124 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
 
 -module(snmpm_user).
 
--export([behaviour_info/1]).
-
-behaviour_info(callbacks) ->
-    [{handle_error,    3}, 
-     {handle_agent,    5}, 
-     {handle_pdu,      4},
-     {handle_trap,     3},
-     {handle_inform,   3},
-     {handle_report,   3}];
-behaviour_info(_) ->
-    undefined.
-
-
-%% handle_error(ReqId, Reason, UserData) -> Reply
-%% ReqId       -> integer()
-%% Reason      -> term()
-%% UserData    -> term()     (supplied when the user register)
-%% Reply       -> ignore 
-
-%% handle_agent(Addr, Port, Type, SnmpInfo, UserData) -> Reply
-%% Addr        -> term()
-%% Port        -> integer()
-%% Type        -> pdu | trap | inform | report
-%% SnmpInfo    -> {ErrorStatus, ErrorIndex, Varbinds}
-%% UserId      -> term()
-%% ErrorStatus -> atom()
-%% ErrorIndex  -> integer()
-%% Varbinds    -> [varbind()]
-%% UserData    -> term()     (supplied when the user register)
-%% Reply       -> ignore | {register, UserId, agent_info()}
-%% agent_info() -> [{agent_info_item(), agent_info_value()}]
-%%                 This is the same info as in update_agent_info/4
-
-%% handle_pdu(TargetName, ReqId, SnmpResponse, UserData) -> Reply
-%% TargetName   -> target_name()
-%% ReqId        -> term() (returned when calling ag(...), ...)
-%% SnmpResponse -> {ErrorStatus, ErrorIndex, Varbinds}
-%% ErrorStatus  -> atom()
-%% ErrorIndex   -> integer()
-%% Varbinds     -> [varbind()]
-%% UserData     -> term()     (supplied when the user register)
-%% Reply        -> ignore 
-
-%% handle_trap(TargetName, SnmpTrapInfo, UserData) -> Reply
-%% TargetName   -> target_name()
-%% SnmpTrapInfo -> {Enteprise, Generic, Spec, Timestamp, Varbinds} |
-%%                 {ErrorStatus, ErrorIndex, Varbinds}
-%% Enteprise    -> oid()
-%% Generic      -> integer() 
-%% Spec         -> integer() 
-%% Timestamp    -> integer() 
-%% ErrorStatus  -> atom()
-%% ErrorIndex   -> integer()
-%% Varbinds     -> [varbind()]
-%% UserData     -> term()     (supplied when the user register)
-%% Reply        -> ignore | unregister | {register, UserId, agent_info()}
-
-%% handle_inform(TargetName, SnmpInform, UserData) -> Reply
-%% TargetName  -> target_name()
-%% SnmpInform  -> {ErrorStatus, ErrorIndex, Varbinds}
-%% ErrorStatus -> atom()
-%% ErrorIndex  -> integer()
-%% Varbinds    -> [varbind()]
-%% UserData    -> term()     (supplied when the user register)
-%% Reply       -> ignore | unregister | {register, UserId, agent_info()}
-%%          
-
-%% handle_report(TargetName, SnmpReport, UserData) -> Reply
-%% TargetName  -> target_name()
-%% SnmpReport  -> {ErrorStatus, ErrorIndex, Varbinds}
-%% ErrorStatus -> integer()
-%% ErrorIndex  -> integer()
-%% Varbinds    -> [varbind()]
-%% UserData    -> term()     (supplied when the user register)
-%% Reply       -> ignore | unregister | {register, UserId, agent_info()}
+-export_type([
+	      snmp_gen_info/0, 
+	      snmp_v1_trap_info/0 
+	     ]).
+
+-type snmp_gen_info() :: {ErrorStatus :: atom(), 
+			  ErrorIndex :: pos_integer(), 
+			  Varbinds :: [snmp:varbind()]}.
+-type snmp_v1_trap_info() :: {Enteprise :: snmp:oid(), 
+			      Generic   :: integer(), 
+			      Spec      :: integer(), 
+			      Timestamp :: integer(), 
+			      Varbinds  :: [snmp:varbind()]}.
+-type ip_address()  :: inet:ip_address().
+-type port_number() :: inet:port_number().
+
+
+%% *** handle_error ***
+%% An "asynchronous" error has been detected 
+
+-callback handle_error(
+	    ReqId :: integer(), 
+	    Reason :: {unexpected_pdu, SnmpInfo :: snmp_gen_info()} |
+		      {invalid_sec_info,
+		       SecInfo :: term(),
+		       SnmpInfo :: snmp_gen_info()} | 
+		      {empty_message,
+		       TransportDomain :: atom(),
+		       {Addr :: ip_address(), Port :: port_number()}} | 
+		      term(), 
+	    UserData :: term()) ->
+    snmp:void().
+
+
+%% *** handle_agent ***
+%% A message was received from an unknown agent
+
+-callback handle_agent(Domain   :: atom(),
+		       Address  :: term(),
+		       Type     :: pdu | trap | inform | report, 
+		       SnmpInfo :: snmp_gen_info() | snmp_v1_trap_info(), 
+		       UserData :: term()) ->
+    Reply :: ignore | 
+	     {register, 
+	      UserId      :: term(), 
+	      RTargetName :: snmpm:target_name(), 
+	      AgentConfig :: [snmpm:agent_config()]}. 
+
+
+%% *** handle_pdu ***
+%% Handle the reply to an async request (such as get, get-next and set).
+
+-callback handle_pdu(TargetName   :: snmpm:target_name(), 
+		     ReqId        :: term(), 
+		     SnmpResponse :: snmp_gen_info(), 
+		     UserData     :: term()) ->
+    snmp:void().
+
+
+%% *** handle_trap ***
+%% Handle a trap/notification message received from an agent
+
+-callback handle_trap(TargetName   :: snmpm:target_name(), 
+		      SnmpTrapInfo :: snmp_gen_info() | snmp_v1_trap_info(), 
+		      UserData     :: term()) ->
+    Reply :: ignore | 
+	     unregister | 
+	     {register, 
+	      UserId      :: term(), 
+	      RTargetName :: snmpm:target_name(), 
+	      AgentConfig :: [snmpm:agent_config()]}.
+
+
+%% *** handle_inform ***
+%% Handle a inform message received from an agent
+
+-callback handle_inform(TargetName :: snmpm:target_name(), 
+			SnmpInform :: snmp_gen_info(), 
+			UserData   :: term()) ->
+    Reply :: ignore | no_reply | 
+	     unregister | 
+	     {register, 
+	      UserId      :: term(), 
+	      RTargetName :: snmpm:target_name(), 
+	      AgentConfig :: [snmpm:agent_config()]}.
+
+
+%% *** handle_report *** 
+%% Handle a report message received from an agent
+
+-callback handle_report(TargetName :: snmpm:target_name(), 
+			SnmpReport :: snmp_gen_info(), 
+			UserData   :: term()) ->
+    Reply :: ignore | 
+	     unregister | 
+	     {register, 
+	      UserId      :: term(), 
+	      RTargetName :: snmpm:target_name(), 
+	      AgentConfig :: [snmpm:agent_config()]}.
+
+
 
diff --git a/lib/snmp/src/manager/snmpm_user_default.erl b/lib/snmp/src/manager/snmpm_user_default.erl
index 015198cb76..bc2b82a38b 100644
--- a/lib/snmp/src/manager/snmpm_user_default.erl
+++ b/lib/snmp/src/manager/snmpm_user_default.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -36,13 +37,13 @@ handle_error(ReqId, Reason, UserData) ->
     ignore.
 
 
-handle_agent(Addr, Port, Type, SnmpInfo, UserData) ->
-    info("received handle_agent:"
-	 "~n   Addr:     ~p"
-	 "~n   Port:     ~p"
-	 "~n   Type:     ~p"
-	 "~n   SnmpInfo: ~p"
-	 "~n   UserData: ~p", [Addr, Port, Type, SnmpInfo, UserData]),
+handle_agent(Domain, Address, Type, SnmpInfo, UserData) ->
+    info("received handle_agent:~n"
+	 "   Domain:   ~p~n"
+	 "   Address:  ~p~n"
+	 "   Type:     ~p~n"
+	 "   SnmpInfo: ~p~n"
+	 "   UserData: ~p", [Domain, Address, Type, SnmpInfo, UserData]),
     ignore.
 
 
diff --git a/lib/snmp/src/manager/snmpm_user_old.erl b/lib/snmp/src/manager/snmpm_user_old.erl
index 69b1470790..bc15ad445b 100644
--- a/lib/snmp/src/manager/snmpm_user_old.erl
+++ b/lib/snmp/src/manager/snmpm_user_old.erl
@@ -1,18 +1,19 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2009. All Rights Reserved.
+%% Copyright Ericsson AB 2009-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %%
diff --git a/lib/snmp/src/manager/snmpm_usm.erl b/lib/snmp/src/manager/snmpm_usm.erl
index 497d6d6102..7dd79e703a 100644
--- a/lib/snmp/src/manager/snmpm_usm.erl
+++ b/lib/snmp/src/manager/snmpm_usm.erl
@@ -1,24 +1,28 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
 %%-----------------------------------------------------------------
 %% This module implements the User Based Security Model for SNMP,
 %% as defined in rfc2274.
+%% 
+%% AES: RFC 3826
+%% 
 %%-----------------------------------------------------------------
 
 -module(snmpm_usm).
@@ -416,11 +420,14 @@ get_des_salt() ->
     [?i32(EngineBoots), ?i32(SaltInt)].
 
 aes_encrypt(PrivKey, Data) ->
-    snmp_usm:aes_encrypt(PrivKey, Data, fun get_aes_salt/0).
+    EngineBoots = get_engine_boots(), 
+    EngineTime  = get_engine_time(), 
+    snmp_usm:aes_encrypt(PrivKey, Data, fun get_aes_salt/0, 
+			 EngineBoots, EngineTime).
 
 aes_decrypt(PrivKey, UsmSecParams, EncData) ->
-    #usmSecurityParameters{msgPrivacyParameters = MsgPrivParams,
-			   msgAuthoritativeEngineTime = EngineTime,
+    #usmSecurityParameters{msgPrivacyParameters        = MsgPrivParams,
+			   msgAuthoritativeEngineTime  = EngineTime,
 			   msgAuthoritativeEngineBoots = EngineBoots} =
 	UsmSecParams,
     snmp_usm:aes_decrypt(PrivKey, MsgPrivParams, EncData, 
diff --git a/lib/snmp/src/manager/snmpm_usm.hrl b/lib/snmp/src/manager/snmpm_usm.hrl
index 1939ad6ed9..38d4a1a07e 100644
--- a/lib/snmp/src/manager/snmpm_usm.hrl
+++ b/lib/snmp/src/manager/snmpm_usm.hrl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/misc/Makefile b/lib/snmp/src/misc/Makefile
index 698c341268..adc2c4858f 100644
--- a/lib/snmp/src/misc/Makefile
+++ b/lib/snmp/src/misc/Makefile
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2003-2012. All Rights Reserved.
+# Copyright Ericsson AB 2003-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/misc/depend.mk b/lib/snmp/src/misc/depend.mk
index dea0f75048..b2e0a92997 100644
--- a/lib/snmp/src/misc/depend.mk
+++ b/lib/snmp/src/misc/depend.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2009. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/misc/modules.mk b/lib/snmp/src/misc/modules.mk
index 32092aaae2..ac42128724 100644
--- a/lib/snmp/src/misc/modules.mk
+++ b/lib/snmp/src/misc/modules.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2004-2009. All Rights Reserved.
+# Copyright Ericsson AB 2004-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%
 
diff --git a/lib/snmp/src/misc/snmp_conf.erl b/lib/snmp/src/misc/snmp_conf.erl
index e1e7fab57b..513616a285 100644
--- a/lib/snmp/src/misc/snmp_conf.erl
+++ b/lib/snmp/src/misc/snmp_conf.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -25,34 +26,42 @@
 %% External exports
 %% Avoid warning for local function error/1 clashing with autoimported BIF.
 -compile({no_auto_import,[error/1]}).
--export([read_files/2, read/2]).
+-export([read_files/2, no_gen/2, no_order/2, no_filter/1, keyorder/4]).
+-export([read/2, read/3]).
 
 %% Basic (type) check functions
 -export([check_mandatory/2,
 	 check_integer/1, check_integer/2,
-	 
+
 	 check_string/1, check_string/2,
 
-	 check_atom/2, 
+	 check_atom/2,
 
 	 check_timer/1,
 
-	 all_domains/0, 
-	 check_domain/1, 
-	 all_tdomains/0, 
-	 check_tdomain/1,  
-	 mk_tdomain/1, 
-	 which_domain/1, 
-	 check_ip/1, check_ip/2, 
-	 check_taddress/1, check_taddress/2, 
-	 mk_taddress/3, 
-	 
-	 check_packet_size/1, 
+	 all_domains/0,
+	 check_domain/1,
+	 domain_to_name/1,
+	 all_tdomains/0,
+	 check_tdomain/1,
+	 mk_tdomain/0, mk_tdomain/1,
+	 tdomain_to_family/1, tdomain_to_domain/1,
+	 which_domain/1,
+	 mk_addr_string/1,
+	 check_ip/1, check_ip/2,
+	 check_port/1,
+%%	 ip_port_to_domaddr/2,
+	 check_address/2, check_address/3,
+	 check_taddress/2,
+	 mk_taddress/1, mk_taddress/2,
+
+	 check_packet_size/1,
 
 	 check_oid/1,
-	 
-	 check_mp_model/1, 
-	 check_sec_model/1, check_sec_model/2, check_sec_model/3, 
+	 check_imask/1, check_emask/1,
+
+	 check_mp_model/1,
+	 check_sec_model/1, check_sec_model/2, check_sec_model/3,
 	 check_sec_level/1,
 
 	 all_integer/1
@@ -69,17 +78,53 @@
 -include("snmp_verbosity.hrl").
 
 
+-define(is_word(P), (((P) band (bnot 65535)) =:= 0)).
+-define(is_word(P0, P1), ((((P0) bor (P1)) band (bnot 255)) =:= 0)).
+
+mk_word(B0, B1) -> ((B0) bsl 8) bor (B1).
+mk_bytes(W) -> [(W) bsr 8,(W) band 255].
+
+-define(
+   is_ipv4_addr(A0, A1, A2, A3),
+   ((((A0) bor (A1) bor (A2) bor (A3)) band (bnot 255)) =:= 0)).
+
+-define(
+   is_ipv6_addr(A0, A1, A2, A3, A4, A5, A6, A7),
+   ((((A0) bor (A1) bor (A2) bor (A3) bor (A4) bor (A5) bor (A6) bor (A7))
+	 band (bnot 65535)) =:= 0)).
+-define(
+   is_ipv6_addr(
+     A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15),
+   ((((A0) bor (A1) bor (A2) bor (A3) bor
+	  (A4) bor (A5) bor (A6) bor (A7) bor
+	  (A8) bor (A9) bor (A10) bor (A11) bor
+	  (A12) bor (A13) bor (A14) bor (A15))
+	 band (bnot 65535)) =:= 0)).
+
+
 %%-----------------------------------------------------------------
 
 %% read_files(Dir, Files) -> Configs
 %% Dir      - string()   - Full path to the config dir.
-%% Files    - [{Gen, Filter, Check, FileName}]
+%% Files    - [{FileName, Gen, Order, Check, Filter}]
+%% FileName - string()   - Name of the config file.
 %% Gen      - function/2 - In case of failure when reading the config file, 
 %%                         this function is called to either generate a
 %%                         default file or issue the error.
-%% Filter   - function/1 - Filters all the config entries read from the file
-%% Check    - function/1 - Check each entry as they are read from the file.
-%% FileName - string()   - Name of the config file.
+%%                         Returns a generated config list corresponding
+%%                         to the written file.
+%%                         (Dir, Error) -> Configs.
+%% Order    - function/2 - An ordering function that is used to process
+%%                         the read config entries using lists:sort/2.
+%%                         Returns true if arg 1 compares less than or
+%%                         equal to arg 2, false otherwise.
+%% Check    - function/2 - Check each entry as they are read from the file.
+%%                         (Entry, State) ->
+%%                             {ok,NewState} | {{ok,NewEntry},NewState} |
+%%                             throw(Error)
+%%                         State =:= 'undefined' the first time.
+%% Filter   - function/1 - Process all the config entries read from the file
+%%                         (Configs) -> [config_entry()].
 %% Configs  - [config_entry()]
 %% config_entry() - term()
 
@@ -88,99 +133,143 @@ read_files(Dir, Files) when is_list(Dir) andalso is_list(Files) ->
 
 read_files(_Dir, [], Res) ->
     lists:reverse(Res);
-read_files(Dir, [{Gen, Filter, Check, FileName}|Files], Res) 
-  when is_function(Filter) andalso 
-       is_function(Check)  andalso 
-       is_list(FileName) ->
-    ?vdebug("read_files -> entry with"
-	"~n   FileName: ~p", [FileName]),
+read_files(Dir, [{FileName, Gen, Order, Check, Filter}|Files], Res)
+  when is_list(FileName),
+       is_function(Gen),
+       is_function(Order),
+       is_function(Check),
+       is_function(Filter) ->
+    ?vdebug("read_files -> entry with~n"
+	    "   FileName: ~p", [FileName]),
     File = filename:join(Dir, FileName),
-    case file:read_file_info(File) of
-        {ok, _} ->
-            Confs = read(File, Check),
-            read_files(Dir, Files, [Filter(Confs)|Res]);
-        {error, R} ->
-	    ?vlog("failed reading file info for ~s: "
-		  "~n   ~p", [FileName, R]),
-            Gen(Dir, R),
-            read_files(Dir, Files, [Filter([])|Res])
-    end.
-
+    Confs =
+	case file:read_file_info(File) of
+	    {ok,_} ->
+		read(File, Order, Check);
+	    {error, R} ->
+		?vlog("failed reading file info for ~s: ~n"
+		      "   ~p", [FileName, R]),
+		Gen(Dir, R)
+	end,
+    read_files(Dir, Files, [Filter(Confs)|Res]).
+
+
+
+no_gen(_Dir, _R) -> [].
+no_order(_, _) -> true.
+no_filter(X) -> X.
+
+%% Order tuples on element N with Keys first in appearence order.
+%%
+%% An ordering function (A, B) shall return true iff
+%% A is less than or equal to B i.e shall return
+%% false iff A is to be ordered after B.
+keyorder(N, A, B, _) when element(N, A) == element(N, B) ->
+    true;
+keyorder(N, A, B, [Key | _])
+  when tuple_size(A) >= 1, element(N, B) == Key ->
+    false;
+keyorder(N, A, B, [Key | _])
+  when element(N, A) == Key, tuple_size(B) >= 1 ->
+    true;
+keyorder(N, A, B, [_ | Keys]) ->
+    keyorder(N, A, B, Keys);
+keyorder(_, A, B, []) when tuple_size(A) >= 1, tuple_size(B) >= 1 ->
+    %% Do not order other keys
+    true;
+keyorder(N, A, B, sort) ->
+    %% Order other keys according to standard sort order
+    element(N, A) =< element(N, B).
+
+
+read(File, Verify) ->
+    Check = fun (Row, State) -> {Verify(Row), State} end,
+    read(File, fun no_order/2, Check).
 
 %% Ret. Res | exit(Reason)
-read(File, Check) when is_function(Check) -> 
-    ?vdebug("read -> entry with"
-	"~n   File: ~p", [File]),
-
+read(File, Order, Check) when is_function(Order), is_function(Check) ->
+    ?vdebug("read -> entry with~n"
+	"   File: ~p", [File]),
     Fd = open_file(File),
+    read_fd(File, Order, Check, Fd, 1, []).
 
-    case loop(Fd, [], Check, 1, File) of
-        {error, Reason} ->     
-            file:close(Fd),
-            error(Reason);
-        {ok, Res} ->
-            file:close(Fd),
-            Res
+read_fd(File, Order, Check, Fd, StartLine, Res) ->
+    case do_read(Fd, "", StartLine) of
+	{ok, Row, EndLine} ->
+	    ?vtrace("read_fd ->~n"
+		    "   Row:     ~p~n"
+		    "   EndLine: ~p", [Row,EndLine]),
+	    read_fd(
+	      File, Order, Check, Fd, EndLine,
+	      [{StartLine, Row, EndLine}|Res]);
+	{error, Error, EndLine} ->
+	    ?vtrace("read_fd -> read failure:~n"
+		    "   Error: ~p~n"
+		    "   EndLine: ~p", [Error,EndLine]),
+	    file:close(Fd),
+	    error({failed_reading, File, StartLine, EndLine, Error});
+	{eof, _EndLine} ->
+	    Lines =
+		lists:sort(
+		  fun ({_, RowA, _}, {_, RowB, _}) ->
+			  Order(RowA, RowB)
+		  end,
+		  lists:reverse(Res)),
+	    ?vtrace("read_fd to read_check ->~n"
+		    "   Lines: ~p", [Lines]),
+	    read_check(File, Check, Lines, undefined, [])
     end.
 
-open_file(File) ->
-    case file:open(File, [read]) of
-        {ok, Fd} -> 
-            Fd;
-        {error, Reason} ->
-            error({failed_open, File, Reason})
+read_check(_, _, [], _, Res) ->
+    lists:reverse(Res);
+read_check(File, Check, [{StartLine, Row, EndLine}|Lines], State, Res) ->
+    try Check(Row, State) of
+	{Rows, NewState} when is_list(Rows) ->
+	    ?vtrace("read_check -> ok:~n"
+		    "   Rows: ~p~n", [Rows]),
+	    read_check(File, Check, Lines, NewState, Rows ++ Res);
+	{ok, NewState} ->
+	    ?vtrace("read_check -> ok", []),
+	    read_check(File, Check, Lines, NewState, [Row | Res]);
+	{{ok, NewRow}, NewState} ->
+	    ?vtrace("read_check -> ok:~n"
+		    "   NewRow: ~p~n", [NewRow]),
+	    read_check(File, Check, Lines, NewState, [NewRow | Res])
+    catch
+	{error, Reason} ->
+	    ?vtrace("read_check -> error:~n"
+		    "   Reason: ~p", [Reason]),
+	    error({failed_check, File, StartLine, EndLine, Reason});
+	Class:Reason ->
+	    Error = {Class,Reason,erlang:get_stacktrace()},
+	    ?vtrace("read_check -> failure:~n"
+		    "   Error: ~p", [Error]),
+	    error({failed_check, File, StartLine, EndLine, Error})
     end.
 
-loop(Fd, Res, Check, StartLine, File) ->
-    case do_read(Fd, "", StartLine) of
-        {ok, Row, EndLine} ->
-	    ?vtrace("loop -> "
-		    "~n   Row:     ~p"
-		    "~n   EndLine: ~p", [Row, EndLine]),
-            case (catch Check(Row)) of
-                ok -> 
-		    ?vtrace("loop -> ok", []),
-                    loop(Fd, [Row | Res], Check, EndLine, File);
-                {ok, NewRow} ->
-		    ?vtrace("loop -> ok: "
-			    "~n   NewRow: ~p", [NewRow]),
-                    loop(Fd, [NewRow | Res], Check, EndLine, File);
-                {error, Reason} ->
-		    ?vtrace("loop -> check error: "
-			    "~n   Reason: ~p", [Reason]),
-                    {error, {failed_check, File, StartLine, EndLine, Reason}};
-                Error ->
-		    ?vtrace("loop -> check failure: "
-			    "~n   Error: ~p", [Error]),
-                    {error, {failed_check, File, StartLine, EndLine, Error}}
-		end;
-        {error, EndLine, Error} ->
-	    ?vtrace("loop -> read failure: "
-		    "~n   Error: ~p", [Error]),
-            {error, {failed_reading, File, StartLine, EndLine, Error}};
-        eof ->
-            {ok, Res}
+open_file(File) ->
+    case file:open(File, [read]) of
+	{ok, Fd} ->
+	    Fd;
+	{error, Reason} ->
+	    error({failed_open, File, Reason})
     end.
 
-
 do_read(Io, Prompt, StartLine) ->
     case io:request(Io, {get_until,Prompt,erl_scan,tokens,[StartLine]}) of
-        {ok, Toks, EndLine} ->
-            case erl_parse:parse_term(Toks) of
-                {ok, Term} ->
-                    {ok, Term, EndLine};
-                {error, {Line, erl_parse, Error}} ->
-                    {error, Line, {parse_error, Error}}
-            end;
-        {error,E,EndLine} ->
-            {error, EndLine, E};
-        {eof, _EndLine} ->
-            eof;
-        Other ->
-            Other
+	{ok, Toks, EndLine} ->
+	    case erl_parse:parse_term(Toks) of
+		{ok, Term} ->
+		    {ok, Term, EndLine};
+		{error, {Line, erl_parse, Error}} ->
+		    {error, {parse_error, Error}, Line}
+	    end;
+	Other ->
+	    Other
     end.
 
 
+
 %%-----------------------------------------------------------------
 
 
@@ -383,7 +472,7 @@ all_tdomains() ->
 check_tdomain(TDomain) ->
     SupportedTDomains = 
 	[
-	 ?snmpUDPDomain, 
+	 ?snmpUDPDomain, % Legacy
 	 ?transportDomainUdpIpv4,
 	 ?transportDomainUdpIpv6			 
 	],
@@ -403,6 +492,9 @@ check_tdomain(TDomain) ->
 
 %% ---------
 
+mk_tdomain() ->
+    mk_tdomain(snmpUDPDomain).
+
 mk_tdomain(snmpUDPDomain) ->
     mk_tdomain(transportDomainUdpIpv4);
 mk_tdomain(transportDomainUdpIpv4) ->
@@ -415,40 +507,64 @@ mk_tdomain(BadDomain) ->
 
 %% ---------
 
-check_taddress(X) ->
-    check_taddress(snmpUDPDomain, X).
+tdomain_to_family(snmpUDPDomain) ->
+    inet;
+tdomain_to_family(transportDomainUdpIpv4) ->
+    inet;
+tdomain_to_family(transportDomainUdpIpv6) ->
+    inet6;
+tdomain_to_family(?snmpUDPDomain) ->
+    inet;
+tdomain_to_family(?transportDomainUdpIpv4) ->
+    inet;
+tdomain_to_family(?transportDomainUdpIpv6) ->
+    inet6;
+tdomain_to_family(BadDomain) ->
+    error({bad_domain, BadDomain}).
+
+
+%% ---------
+
+tdomain_to_domain(?snmpUDPDomain) ->
+    snmpUDPDomain;
+tdomain_to_domain(?transportDomainUdpIpv4) ->
+    transportDomainUdpIpv4;
+tdomain_to_domain(?transportDomainUdpIpv6) ->
+    transportDomainUdpIpv6;
+tdomain_to_domain(BadTDomain) ->
+    error({bad_tdomain, BadTDomain}).
+
+
+%% ---------
 
 check_taddress(?snmpUDPDomain, X) ->
     check_taddress(transportDomainUdpIpv4, X);
 check_taddress(snmpUDPDomain, X) ->
     check_taddress(transportDomainUdpIpv4, X);
-
+%%
 check_taddress(?transportDomainUdpIpv4, X) ->
     check_taddress(transportDomainUdpIpv4, X);
-check_taddress(transportDomainUdpIpv4, X) 
-  when is_list(X) andalso (length(X) =:= 6) ->
-    case (catch all_integer(X)) of
-	true  -> 
+check_taddress(transportDomainUdpIpv4, X) ->
+    case X of
+	[A0,A1,A2,A3,P0,P1]
+	  when ?is_ipv4_addr(A0, A1, A2, A3), ?is_word(P0, P1) ->
 	    ok;
-	false -> 
+	_ ->
 	    error({invalid_taddress, X})
     end;
-check_taddress(transportDomainUdpIpv4, X) ->
-    error({invalid_taddress, X});
-
+%%
 check_taddress(?transportDomainUdpIpv6, X) ->
     check_taddress(transportDomainUdpIpv6, X);
-check_taddress(transportDomainUdpIpv6, X) 
-  when is_list(X) andalso (length(X) =:= 10) ->
-    case (catch all_integer(X)) of
-	true  -> 
+check_taddress(transportDomainUdpIpv6, X) ->
+    case X of
+	[A0,A1,A2,A3,A4,A5,A6,A7,P0,P1]
+	when ?is_ipv6_addr(A0, A1, A2, A3, A4, A5, A6, A7),
+	     ?is_word(P0, P1) ->
 	    ok;
-	false -> 
+	_ ->
 	    error({invalid_taddress, X})
     end;
-check_taddress(transportDomainUdpIpv6, X) ->
-    error({invalid_taddress, X});
-
+%%
 check_taddress(BadDomain, _X) ->
     error({invalid_tdomain, BadDomain}).
 
@@ -488,6 +604,7 @@ do_check_timer(WaitFor, Factor, Incr, Retry) ->
     check_integer(Retry,   {gte, 0}),
     ok.
 
+
 %% ---------
 
 all_domains() ->
@@ -510,96 +627,359 @@ all_domains() ->
      transportDomainSctpDns
     ].
 
+check_domain(snmpUDPDomain) -> ok;
+check_domain(transportDomainUdpIpv4) -> ok;
+check_domain(transportDomainUdpIpv6) -> ok;
 check_domain(Domain) ->
-    SupportedDomains = 
-	[
-	 snmpUDPDomain, 
-	 transportDomainUdpIpv4,
-	 transportDomainUdpIpv6
-	],
-    AllDomains = all_domains(), 
-    case lists:member(Domain, SupportedDomains) of
+    case lists:member(Domain, all_domains()) of
 	true ->
-	    ok;
+	    error({unsupported_domain, Domain});
 	false ->
-	    case lists:member(Domain, AllDomains) of
-		true ->
-		    error({unsupported_domain, Domain});
-		false ->
-		    error({unknown_domain, Domain})
-	    end
+	    error({unknown_domain, Domain})
     end.
-	    
+
+domain_to_name(snmpUDPDomain) ->
+    undefined;
+domain_to_name(transportDomainUdpIpv4) ->
+    udpIpv4;
+domain_to_name(transportDomainUdpIpv6) ->
+    udpIpv6;
+domain_to_name(transportDomainUdpIpv4z) ->
+    udpIpv4z;
+domain_to_name(transportDomainUdpIpv6z) ->
+    udpIpv6z;
+domain_to_name(transportDomainTcpIpv4) ->
+    tcpIpv4;
+domain_to_name(transportDomainTcpIpv6) ->
+    tcpIpv6;
+domain_to_name(transportDomainTcpIpv4z) ->
+    tcpIpv4z;
+domain_to_name(transportDomainTcpIpv6z) ->
+    tcpIpv6z;
+domain_to_name(transportDomainSctpIpv4) ->
+    sctpIpv4;
+domain_to_name(transportDomainSctpIpv6) ->
+    sctpIpv6;
+domain_to_name(transportDomainSctpIpv4z) ->
+    sctpIpv4z;
+domain_to_name(transportDomainSctpIpv6z) ->
+    sctpIpv6z;
+domain_to_name(transportDomainLocal) ->
+    local;
+domain_to_name(transportDomainUdpDns) ->
+    udpDns;
+domain_to_name(transportDomainTcpDns) ->
+    tcpDns;
+domain_to_name(transportDomainSctpDns) ->
+    sctpDns;
+domain_to_name(BadDomain) ->
+    error({bad_domain, BadDomain}).
 
 %% ---------
 
-%% The values of Ip and Port has both been checked at this
-%% point, so we dont need to do that again.
-mk_taddress(snmpUDPDomain, Ip, Port) ->
-    mk_taddress(transportDomainUdpIpv4, Ip, Port);
-mk_taddress(transportDomainUdpIpv4, Ip, Port) when is_list(Ip) ->
-    Ip ++ [Port div 256, Port rem 256];
-mk_taddress(transportDomainUdpIpv4 = Domain, Ip, Port) when is_tuple(Ip) ->
-    mk_taddress(Domain, tuple_to_list(Ip), Port);
-mk_taddress(transportDomainUdpIpv6, Ip, Port) when is_list(Ip) ->
-    Ip ++ [Port div 256, Port rem 256];
-mk_taddress(transportDomainUdpIpv6 = Domain, Ip, Port) when is_tuple(Ip) ->
-    mk_taddress(Domain, tuple_to_list(Ip), Port);
+mk_taddress(Address) ->
+    mk_taddress(snmpUDPDomain, Address).
 
+%% The values of Domain, Ip and Port has both been checked at this
+%% point, so we dont need to do that again, but this function is
+%% also used on incoming packets from net_if so a little
+%% check that net_if does not supply bad arguments is in order.
+%%
 %% These are just for convenience
-mk_taddress(?snmpUDPDomain, Ip, Port) ->
-    mk_taddress(snmpUDPDomain, Ip, Port);
-mk_taddress(?transportDomainUdpIpv4, Ip, Port) ->
-    mk_taddress(transportDomainUdpIpv4, Ip, Port);
-mk_taddress(?transportDomainUdpIpv6, Ip, Port) ->
-    mk_taddress(transportDomainUdpIpv6, Ip, Port);
-
+mk_taddress(?snmpUDPDomain, Address) ->
+    mk_taddress(snmpUDPDomain, Address);
+mk_taddress(?transportDomainUdpIpv4, Address) ->
+    mk_taddress(transportDomainUdpIpv4, Address);
+mk_taddress(?transportDomainUdpIpv6, Address) ->
+    mk_taddress(transportDomainUdpIpv6, Address);
+%%
+mk_taddress(snmpUDPDomain, Address) -> % Legacy
+    mk_taddress(transportDomainUdpIpv4, Address);
+mk_taddress(transportDomainUdpIpv4 = Domain, Address) ->
+    case Address of
+	[] -> % Empty mask
+	    [];
+	{Ip, Port} when tuple_size(Ip) =:= 4, is_integer(Port) ->
+	    tuple_to_list(Ip) ++ mk_bytes(Port);
+	_ ->
+	    erlang:error(badarg, [Domain,Address])
+    end;
+mk_taddress(transportDomainUdpIpv6 = Domain, Address) ->
+    case Address of
+	[] -> % Empty mask
+	    [];
+	{{A, B, C, D, E, F, G, H}, Port} ->
+	    [A bsr 8, A band 255,
+	     B bsr 8, B band 255,
+	     C bsr 8, C band 255,
+	     D bsr 8, D band 255,
+	     E bsr 8, E band 255,
+	     F bsr 8, F band 255,
+	     G bsr 8, G band 255,
+	     H bsr 8, H band 255,
+	     Port bsr 8, Port band 255];
+	_ ->
+	    erlang:error(badarg, [Domain,Address])
+    end;
 %% Bad domain
-mk_taddress(BadDomain, _Ip, _Port) ->
+mk_taddress(BadDomain, _) ->
     error({bad_domain, BadDomain}).
 
-    
+
 %% ---------
 
-which_domain(Ip) when is_list(Ip) andalso (length(Ip) =:= 4) ->
+%% XXX remove, when net_if handles one socket per transport domain
+
+which_domain([A0,A1,A2,A3])
+  when ?is_ipv4_addr(A0, A1, A2, A3) ->
     transportDomainUdpIpv4;
-which_domain(Ip) when is_tuple(Ip) andalso (size(Ip) =:= 4) ->
+which_domain({A0, A1, A2, A3})
+  when ?is_ipv4_addr(A0, A1, A2, A3) ->
     transportDomainUdpIpv4;
-which_domain(Ip) when is_list(Ip) andalso (length(Ip) =:= 8) ->
+which_domain([A0,A1,A2,A3,A4,A5,A6,A7])
+  when ?is_ipv6_addr(A0, A1, A2, A3, A4, A5, A6, A7) ->
     transportDomainUdpIpv6;
-which_domain(Ip) when is_tuple(Ip) andalso (size(Ip) =:= 8) ->
+which_domain([A0,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10,A11,A12,A13,A14,A15])
+  when ?is_ipv6_addr(
+	  A0, A1, A2, A3, A4, A5, A6, A7,
+	  A8, A9, A10, A11, A12, A13, A14, A15) ->
+    transportDomainUdpIpv6;
+which_domain({A0, A1, A2, A3, A4, A5, A6, A7})
+  when ?is_ipv6_addr(A0, A1, A2, A3, A4, A5, A6, A7) ->
     transportDomainUdpIpv6.
-
     
 %% ---------
 
+mk_addr_string({Domain, Addr}) when is_atom(Domain) ->
+    %% XXX There is only code for IP domains here
+    case check_address_ip(Domain, Addr) of
+	false ->
+	    case check_address_ip_port(Domain, Addr) of
+		false ->
+		    error({bad_address, {Domain, Addr}});
+		true ->
+		    {IP, Port} = Addr,
+		    mk_addr_string_ntoa(Domain, IP, Port);
+		{IP, Port} ->
+		    mk_addr_string_ntoa(Domain, IP, Port)
+	    end;
+	true ->
+	    mk_addr_string_ntoa(Domain, Addr);
+	IP ->
+	    mk_addr_string_ntoa(Domain, IP)
+    end;
+mk_addr_string({_IP, Port} = Addr) when is_integer(Port) ->
+    mk_addr_string({snmpUDPDomain, Addr});
+mk_addr_string(Strange) ->
+    lists:flatten(io_lib:format("~w", [Strange])).
+
+
+mk_addr_string_ntoa({_, _, _, _} = IP) ->
+    inet:ntoa(IP);
+mk_addr_string_ntoa(IP) ->
+    lists:flatten(io_lib:format("[~s]", [inet:ntoa(IP)])).
+
+mk_addr_string_ntoa(Domain, IP) ->
+    case domain_to_name(Domain) of
+	undefined ->
+	    mk_addr_string_ntoa(IP);
+	Name ->
+	    lists:flatten(
+	      io_lib:format("~w://~s", [Name, mk_addr_string_ntoa(IP)]))
+    end.
+
+mk_addr_string_ntoa(Domain, IP, Port) ->
+    lists:flatten(
+      io_lib:format(
+	"~s:~w", [mk_addr_string_ntoa(Domain, IP), Port])).
+
+%% ---------
+
 check_ip(X) ->
     check_ip(snmpUDPDomain, X).
 
-check_ip(snmpUDPDomain, X) ->
-    check_ip(transportDomainUdpIpv4, X);
-check_ip(transportDomainUdpIpv4, X) when is_list(X) andalso (length(X) =:= 4) ->
-    case (catch all_integer(X)) of
-	true  -> 
+check_ip(Domain, IP) ->
+    %% XXX There is only code for IP domains here
+    case check_address_ip(Domain, IP) of
+	false ->
+	    error({bad_address, {Domain, IP}});
+	true ->
 	    ok;
-	false -> 
-	    error({invalid_ip_address, X})
-    end;
-check_ip(transportDomainUdpIpv4, X) ->
-    error({invalid_ip_address, X});
+	FixedIP ->
+	    {ok, FixedIP}
+    end.
+
+
+%% ---------
+
+check_port(Port) when ?is_word(Port) ->
+    ok;
+check_port(Port) ->
+    error({bad_port, Port}).
+
+%% ip_port_to_domaddr(IP, Port) when ?is_word(Port) ->
+%%     %% XXX There is only code for IP domains here
+%%     case check_address_ip(transportDomainUdpIpv4, IP) of
+%% 	false ->
+%% 	    case check_address_ip(transportDomainUdpIpv6, IP) of
+%% 		false ->
+%% 		    error({bad_address, {transportDomainUdpIpv4, {IP, Port}}});
+%% 		true ->
+%% 		    {transportDomainUdpIpv6, {IP, Port}};
+%% 		FixedIP ->
+%% 		    {transportDomainUdpIpv6, {FixedIP, Port}}
+%% 	    end;
+%% 	true ->
+%% 	    {transportDomainUdpIpv4, {IP, Port}};
+%% 	FixedIP ->
+%% 	    {transportDomainUdpIpv4, {FixedIP, Port}}
+%%     end;
+%% ip_port_to_domaddr(IP, Port) ->
+%%     error({bad_address, {transportDomainUdpIpv4, {IP, Port}}}).
+
+%% Check a configuration term field from a file to see if it
+%% can be fixed to be fed to mk_taddress/2.
+
+check_address(Domain, Address, DefaultPort) ->
+    %% If Address does not contain Port or contains Port =:= 0
+    %% create an address containing DefaultPort
+    %%
+    %% XXX There is only code for IP domains here
+    case check_address_ip(Domain, Address) of
+	false ->
+	    case check_address_ip_port(Domain, Address) of
+		false ->
+		    error({bad_address, {Domain, Address}});
+		true ->
+		    case Address of
+			{IP, 0} ->
+			    {ok, {IP, DefaultPort}};
+			_ ->
+			    ok
+		    end;
+		{FixedIP, 0} ->
+		    {ok, {FixedIP, DefaultPort}};
+		FixedAddress ->
+		    {ok, FixedAddress}
+	    end;
+	true ->
+	    {ok, {Address, DefaultPort}};
+	FixedIP ->
+	    {ok, {FixedIP, DefaultPort}}
+    end.
 
-check_ip(transportDomainUdpIpv6, X) when is_list(X) andalso (length(X) =:= 8) ->
-    case (catch all_integer(X)) of
-	true  -> 
+check_address(Domain, Address) ->
+    %% Address has to contain Port
+    %%
+    %% XXX There is only code for IP domains here
+    case check_address_ip_port(Domain, Address) of
+	false ->
+	    error({bad_address, {Domain, Address}});
+	true ->
 	    ok;
-	false -> 
-	    error({invalid_ip_address, X})
+	FixedAddress ->
+	    {ok, FixedAddress}
+    end.
+
+%% -> IP
+check_address_ip(Domain, Address)
+  when Domain =:= snmpUDPDomain;
+       Domain =:= transportDomainUdpIpv4 ->
+    case Address of
+	%% Erlang native format
+	{A0, A1, A2, A3}
+	  when ?is_ipv4_addr(A0, A1, A2, A3) ->
+	    true;
+	%% Erlangish format
+	[A0,A1,A2,A3]
+	  when ?is_ipv4_addr(A0, A1, A2, A3) ->
+	    {A0, A1, A2, A3};
+	_ ->
+	    false
+    end;
+check_address_ip(transportDomainUdpIpv6, Address) ->
+    case Address of
+	%% Erlang native format
+	{A0, A1, A2, A3, A4, A5, A6, A7}
+	  when ?is_ipv6_addr(A0, A1, A2, A3, A4, A5, A6, A7) ->
+	    true;
+	%% Erlangish format
+	[A0,A1,A2,A3,A4,A5,A6,A7]
+	  when ?is_ipv6_addr(A0, A1, A2, A3, A4, A5, A6, A7) ->
+	    {A0, A1, A2, A3, A4, A5, A6, A7};
+	%% SNMP standards format
+	[A0,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10,A11,A12,A13,A14,A15]
+	  when ?is_ipv6_addr(
+		  A0, A1, A2, A3, A4, A5, A6, A7,
+		  A8, A9, A10, A11, A12, A13, A14, A15) ->
+	    {mk_word(A0, A1), mk_word(A2, A3),
+	     mk_word(A4, A5), mk_word(A6, A7),
+	     mk_word(A8, A9), mk_word(A10, A11),
+	     mk_word(A12, A13), mk_word(A14, A15)};
+	_ ->
+	    false
     end;
-check_ip(transportDomainUdpIpv6, X) ->
-    error({invalid_ip_address, X});
+check_address_ip(BadDomain, _) ->
+    error({bad_domain, BadDomain}).
 
-check_ip(BadDomain, _X) ->
-    error({invalid_domain, BadDomain}).
+%% -> {IP, Port}
+check_address_ip_port(Domain, Address)
+  when Domain =:= snmpUDPDomain;
+       Domain =:= transportDomainUdpIpv4 ->
+    case Address of
+	{IP, Port} when ?is_word(Port) ->
+	    case check_address_ip(Domain, IP) of
+		false ->
+		    false;
+		true ->
+		    true;
+		FixedIP ->
+		    {FixedIP, Port}
+	    end;
+	%% SNMP standards format
+	[A0,A1,A2,A3,P0,P1]
+	  when ?is_ipv4_addr(A0, A1, A2, A3), ?is_word(P0, P1) ->
+	    {{A0, A1, A2, A3}, mk_word(P0, P1)};
+	_ ->
+	    false
+    end;
+check_address_ip_port(transportDomainUdpIpv6 = Domain, Address) ->
+    case Address of
+	{IP, Port} when ?is_word(Port) ->
+	    case check_address_ip(Domain, IP) of
+		false ->
+		    false;
+		true ->
+		    true;
+		FixedIP ->
+		    {FixedIP, Port}
+	    end;
+	%% Erlang friendly list format
+	[A0,A1,A2,A3,A4,A5,A6,A7,P]
+	  when ?is_ipv6_addr(A0, A1, A2, A3, A4, A5, A6, A7),
+	       ?is_word(P) ->
+	    {{A0, A1, A2, A3, A4, A5, A6, A7}, P};
+	%% Strange hybrid format with port as bytes
+	[A0,A1,A2,A3,A4,A5,A6,A7,P0,P1]
+	  when ?is_ipv6_addr(A0, A1, A2, A3, A4, A5, A6, A7),
+	       ?is_word(P0, P1) ->
+	    {{A0, A1, A2, A3, A4, A5, A6, A7}, mk_word(P0, P1)};
+	%% SNMP standards format
+	[A0,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10,A11,A12,A13,A14,A15,P0,P1]
+	  when ?is_ipv6_addr(
+		  A0, A1, A2, A3, A4, A5, A6, A7,
+		  A8, A9, A10, A11, A12, A13, A14, A15),
+	       ?is_word(P0, P1) ->
+	    {{mk_word(A0, A1), mk_word(A2, A3),
+	      mk_word(A4, A5), mk_word(A6, A7),
+	      mk_word(A8, A9), mk_word(A10, A11),
+	      mk_word(A12, A13), mk_word(A14, A15)},
+	     mk_word(P0, P1)};
+	_ ->
+	    false
+    end;
+check_address_ip_port(BadDomain, _) ->
+    error({bad_domain, BadDomain}).
 
 
 
@@ -618,6 +998,39 @@ check_oid(X) ->
 
 %% ---------
 
+%% Check a (view) mask in the internal form (all 0 and 1): 
+check_imask(null) ->
+    {ok, []};
+check_imask(IMask) when is_list(IMask) ->
+    do_check_imask(IMask), 
+    {ok, IMask}.
+
+do_check_imask([]) ->
+    ok;
+do_check_imask([0|IMask]) ->
+    do_check_imask(IMask);
+do_check_imask([1|IMask]) ->
+    do_check_imask(IMask);
+do_check_imask([X|_]) ->
+    error({invalid_internal_mask_element, X}).
+
+
+%% Check a (view) mask in the external form (according to MIB, 
+%% an OCTET STRING of at most length 16). 
+check_emask(EMask) when is_list(EMask) andalso (length(EMask) =< 16) ->
+    do_check_emask(EMask).
+
+do_check_emask([]) ->
+    ok;
+do_check_emask([X|EMask]) 
+  when is_integer(X) andalso (X >= 16#00) andalso (X =< 16#FF) ->
+    do_check_emask(EMask);
+do_check_emask([X|_]) ->
+    error({invalid_external_mask_element, X}).
+
+
+%% ---------
+
 all_integer([H|T]) when is_integer(H) -> all_integer(T);
 all_integer([_H|_T]) -> false;
 all_integer([]) -> true.
diff --git a/lib/snmp/src/misc/snmp_config.erl b/lib/snmp/src/misc/snmp_config.erl
index 945b8719fc..45661b71a7 100644
--- a/lib/snmp/src/misc/snmp_config.erl
+++ b/lib/snmp/src/misc/snmp_config.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
@@ -26,24 +27,29 @@
 -compile({no_auto_import,[error/1]}).
 -export([config/0]).
 
--export([write_config_file/4, append_config_file/4, read_config_file/3]).
+%%-export([write_config_file/4, append_config_file/4, read_config_file/4]).
+
+-export([write_config_file/6, append_config_file/6, read_config_file/4]).
 
 -export([write_agent_snmp_files/7, write_agent_snmp_files/12,
+	 write_agent_snmp_files/6, write_agent_snmp_files/11,
 
-	 write_agent_snmp_conf/5, 
+	 write_agent_snmp_conf/4, write_agent_snmp_conf/5,
 	 write_agent_snmp_context_conf/1, 
 	 write_agent_snmp_community_conf/1, 
 	 write_agent_snmp_standard_conf/2, 
-	 write_agent_snmp_target_addr_conf/4, 
-	 write_agent_snmp_target_addr_conf/6, 
+	 write_agent_snmp_target_addr_conf/3,
+	 write_agent_snmp_target_addr_conf/4,
+	 write_agent_snmp_target_addr_conf/5,
+	 write_agent_snmp_target_addr_conf/6,
 	 write_agent_snmp_target_params_conf/2, 
 	 write_agent_snmp_notify_conf/2, 
 	 write_agent_snmp_usm_conf/5, 
 	 write_agent_snmp_vacm_conf/3, 
 
 	 write_manager_snmp_files/8,
-	 write_manager_snmp_conf/5, 
-	 write_manager_snmp_users_conf/2, 
+	 write_manager_snmp_conf/4, write_manager_snmp_conf/5,
+	 write_manager_snmp_users_conf/2,
 	 write_manager_snmp_agents_conf/2, 
 	 write_manager_snmp_usm_conf/2
  	 
@@ -90,9 +96,9 @@
 	]).
 
 
--export_type([void/0, 
-	      verify_config_entry_function/0, 
-	      verify_config_function/0, 
+-export_type([void/0,
+	      order_config_entry_function/0,
+	      check_config_entry_function/0,
 	      write_config_function/0]).
 
 
@@ -233,16 +239,18 @@ config_agent_sys() ->
 		     fun verify_verbosity/1),
     DbDir     = ask("5. Database directory (absolute path)?", DefDir, 
 		    fun verify_dir/1),
-    MibStorageType = ask("6. Mib storage type (ets/dets/mnesia)?", "ets",
+    DbInitError = ask("6. How to handle DB init error?", 
+		      "terminate", fun verify_db_init_error/1),
+    MibStorageType = ask("7. Mib storage type (ets/dets/mnesia)?", "ets",
 			 fun verify_mib_storage_type/1),
     MibStorage = 
 	case MibStorageType of
 	    ets ->
 		[{module, snmpa_mib_storage_ets}];
 	    dets ->
-		DetsDir = ask("6b. Mib storage directory (absolute path)?",
+		DetsDir = ask("7b. Mib storage directory (absolute path)?",
 			      DbDir, fun verify_dir/1),
-		DetsAction = ask("6c. Mib storage [dets] database start "
+		DetsAction = ask("7c. Mib storage [dets] database start "
 				 "action "
 				 "(default/clear/keep)?", 
 				 "default", fun verify_mib_storage_action/1),
@@ -257,7 +265,7 @@ config_agent_sys() ->
 		end;
 	    mnesia ->
 		Nodes = [],
-		MnesiaAction = ask("6b. Mib storage [mnesia] database start "
+		MnesiaAction = ask("7b. Mib storage [mnesia] database start "
 				   "action "
 				   "(default/clear/keep)?", 
 				   "default", fun verify_mib_storage_action/1),
@@ -275,80 +283,80 @@ config_agent_sys() ->
     %% Here we should ask about mib-server data module, 
     %% but as we only have one at the moment...
 
-    TargetCacheVerb = ask("7. Target cache verbosity "
+    TargetCacheVerb = ask("8. Target cache verbosity "
 			  "(silence/info/log/debug/trace)?", "silence",
 			  fun verify_verbosity/1),
-    SymStoreVerb = ask("8. Symbolic store verbosity "
+    SymStoreVerb = ask("9. Symbolic store verbosity "
 		       "(silence/info/log/debug/trace)?", "silence",
 		       fun verify_verbosity/1),
-    LocalDbVerb = ask("9. Local DB verbosity "
+    LocalDbVerb = ask("10. Local DB verbosity "
 		       "(silence/info/log/debug/trace)?", "silence",
 		       fun verify_verbosity/1),
-    LocalDbRepair = ask("10. Local DB repair (true/false/force)?", "true",
+    LocalDbRepair = ask("11. Local DB repair (true/false/force)?", "true",
 			fun verify_dets_repair/1),
-    LocalDbAutoSave = ask("11. Local DB auto save (infinity/milli seconds)?", 
+    LocalDbAutoSave = ask("12. Local DB auto save (infinity/milli seconds)?", 
 			  "5000", fun verify_dets_auto_save/1),
-    ErrorMod = ask("12. Error report module?", "snmpa_error_logger", fun verify_module/1),
-    Type = ask("13. Agent type (master/sub)?", "master", 
+    ErrorMod = ask("13. Error report module?", "snmpa_error_logger", fun verify_module/1),
+    Type = ask("14. Agent type (master/sub)?", "master", 
 	       fun verify_agent_type/1),
     AgentConfig = 
 	case Type of 
 	    master ->
-		MasterAgentVerb = ask("14. Master-agent verbosity "
+		MasterAgentVerb = ask("15. Master-agent verbosity "
 				      "(silence/info/log/debug/trace)?", 
 				      "silence",
 				      fun verify_verbosity/1),
-		ForceLoad = ask("15. Shall the agent re-read the "
+		ForceLoad = ask("16. Shall the agent re-read the "
 				"configuration files during startup ~n"
 				"    (and ignore the configuration "
 				"database) (true/false)?", "true", 
 				fun verify_bool/1),
-		MultiThreaded = ask("16. Multi threaded agent (true/false)?", 
+		MultiThreaded = ask("17. Multi threaded agent (true/false)?", 
 				    "false",
 				    fun verify_bool/1),
-		MeOverride = ask("17. Check for duplicate mib entries when "
+		MeOverride = ask("18. Check for duplicate mib entries when "
 				 "installing a mib (true/false)?", "false",
 				 fun verify_bool/1),
-		TrapOverride = ask("18. Check for duplicate trap names when "
+		TrapOverride = ask("19. Check for duplicate trap names when "
 				   "installing a mib (true/false)?", "false",
 				   fun verify_bool/1),
-		MibServerVerb = ask("19. Mib server verbosity "
+		MibServerVerb = ask("20. Mib server verbosity "
 				    "(silence/info/log/debug/trace)?", 
 				    "silence",
 				    fun verify_verbosity/1),
-		MibServerCache = ask("20. Mib server cache "
+		MibServerCache = ask("21. Mib server cache "
 				    "(true/false)?", 
 				    "true",
 				    fun verify_bool/1),
-		NoteStoreVerb = ask("21. Note store verbosity "
+		NoteStoreVerb = ask("22. Note store verbosity "
 				    "(silence/info/log/debug/trace)?", 
 				    "silence",
 				    fun verify_verbosity/1),
-		NoteStoreTimeout = ask("22. Note store GC timeout?", "30000",
+		NoteStoreTimeout = ask("23. Note store GC timeout?", "30000",
 				       fun verify_timeout/1),
 		ATL = 
-		    case ask("23. Shall the agent use an audit trail log "
+		    case ask("24. Shall the agent use an audit trail log "
 			     "(y/n)?",
 			     "n", fun verify_yes_or_no/1) of
 			yes ->
-			    ATLType = ask("23b. Audit trail log type "
+			    ATLType = ask("24b. Audit trail log type "
 					  "(write/read_write)?",
 					  "read_write", fun verify_atl_type/1),
-			    ATLDir = ask("23c. Where to store the "
+			    ATLDir = ask("24c. Where to store the "
 					 "audit trail log?",
 					 DefDir, fun verify_dir/1),
-			    ATLMaxFiles = ask("23d. Max number of files?", 
+			    ATLMaxFiles = ask("24d. Max number of files?", 
 					      "10", 
 					      fun verify_pos_integer/1),
-			    ATLMaxBytes = ask("23e. Max size (in bytes) "
+			    ATLMaxBytes = ask("24e. Max size (in bytes) "
 					      "of each file?", 
 					      "10240", 
 					      fun verify_pos_integer/1),
 			    ATLSize = {ATLMaxBytes, ATLMaxFiles},
-			    ATLRepair = ask("23f. Audit trail log repair "
+			    ATLRepair = ask("24f. Audit trail log repair "
 					    "(true/false/truncate/snmp_repair)?", "true",
 					    fun verify_atl_repair/1),
-			    ATLSeqNo = ask("23g. Audit trail log "
+			    ATLSeqNo = ask("24g. Audit trail log "
 					   "sequence-numbering (true/false)?", 
 					   "false",
 					   fun verify_atl_seqno/1),
@@ -360,33 +368,33 @@ config_agent_sys() ->
 			no ->
 			    []
 		    end,
-		NetIfVerb = ask("24. Network interface verbosity "
+		NetIfVerb = ask("25. Network interface verbosity "
 				"(silence/info/log/debug/trace)?", 
 				"silence",
 				fun verify_verbosity/1),
-		NetIfMod = ask("25. Which network interface module shall be used?",
+		NetIfMod = ask("26. Which network interface module shall be used?",
 			       "snmpa_net_if", fun verify_module/1),
 		NetIfOpts = 
 		    case NetIfMod of
 			snmpa_net_if ->
 			    NetIfBindTo = 
-				ask("25a. Bind the agent IP address "
+				ask("26a. Bind the agent IP address "
 				    "(true/false)?",
 				    "false", fun verify_bool/1),
 			    NetIfNoReuse = 
-				ask("25b. Shall the agents "
+				ask("26b. Shall the agents "
 				    "IP address "
 				    "and port be not reusable "
 				    "(true/false)?",
 				    "false", fun verify_bool/1),
 			    NetIfReqLimit = 
-				ask("25c. Agent request limit "
+				ask("26c. Agent request limit "
 				    "(used for flow control) "
 				    "(infinity/pos integer)?", 
 				    "infinity",
 				    fun verify_netif_req_limit/1),
 			    NetIfRecbuf = 
-				case ask("25d. Receive buffer size of the "
+				case ask("26d. Receive buffer size of the "
 					 "agent (in bytes) "
 					 "(default/pos integer)?", 
 					 "default", 
@@ -397,7 +405,7 @@ config_agent_sys() ->
 					[{recbuf, RecBufSz}]
 				end,
 			    NetIfSndbuf = 
-				case ask("25e. Send buffer size of the agent "
+				case ask("26e. Send buffer size of the agent "
 					 "(in bytes) (default/pos integer)?", 
 					 "default", 
 					 fun verify_netif_sndbuf/1) of
@@ -407,7 +415,7 @@ config_agent_sys() ->
 					[{sndbuf, SndBufSz}]
 				end,
 			    NetIfFilter = 
-				case ask("25f. Do you wish to specify a "
+				case ask("26f. Do you wish to specify a "
 					 "network interface filter module "
 					 "(or use default)",
 					 "default", fun verify_module/1) of
@@ -426,18 +434,18 @@ config_agent_sys() ->
 		NetIf = [{module,    NetIfMod},
 			 {verbosity, NetIfVerb},
 			 {options,   NetIfOpts}],
-		TermDiscoEnable = ask("26a. Allow terminating discovery "
+		TermDiscoEnable = ask("27. Allow terminating discovery "
 				      "(true/false)?", "true",
 				      fun verify_bool/1),
 		TermDiscoConf = 
 		    case TermDiscoEnable of
 			true ->
 			    TermDiscoStage2 = 
-				ask("26b. Second stage behaviour "
+				ask("27a. Second stage behaviour "
 				    "(discovery/plain)?", "discovery",
 				    fun verify_term_disco_behaviour/1),
 			    TermDiscoTrigger = 
-				ask("26c. Trigger username "
+				ask("27b. Trigger username "
 				    "(default/a string)?", "default",
 				    fun verify_term_disco_trigger_username/1),
 			    [{enable, TermDiscoEnable},
@@ -448,7 +456,7 @@ config_agent_sys() ->
 			     {stage2, discovery},
 			     {trigger_username, ""}]
 		    end,
-		OrigDiscoEnable = ask("27a. Allow originating discovery "
+		OrigDiscoEnable = ask("28. Allow originating discovery "
 				      "(true/false)?", "true",
 				      fun verify_bool/1),
 		OrigDiscoConf = 
@@ -471,7 +479,7 @@ config_agent_sys() ->
 				    {verbosity, NoteStoreVerb}]},
 		 {net_if, NetIf}] ++ ATL;
 	    sub ->
-		SubAgentVerb = ask("14. Sub-agent verbosity "
+		SubAgentVerb = ask("15. Sub-agent verbosity "
 				   "(silence/info/log/debug/trace)?", 
 				   "silence",
 				   fun verify_verbosity/1),
@@ -480,11 +488,12 @@ config_agent_sys() ->
 		 {config,          [{dir, ConfigDir}]}]
 	end,
     SysConfig = 
-	[{priority,    Prio},
-	 {versions,    Vsns},
-	 {db_dir,      DbDir},
-	 {mib_storage, MibStorage},
-	 {target_cache, [{verbosity, TargetCacheVerb}]},
+	[{priority,       Prio},
+	 {versions,       Vsns},
+	 {db_dir,         DbDir},
+	 {db_init_error,  DbInitError},
+	 {mib_storage,    MibStorage},
+	 {target_cache,   [{verbosity, TargetCacheVerb}]},
 	 {symbolic_store, [{verbosity, SymStoreVerb}]},
 	 {local_db, [{repair,    LocalDbRepair},
 		     {auto_save, LocalDbAutoSave},
@@ -564,11 +573,9 @@ config_agent_snmp(Dir, Vsns) ->
 		end,
 		NT
 	end,
-    case (catch write_agent_snmp_files(Dir, 
-				       Vsns, ManagerIP, TrapUdp, 
-				       AgentIP, AgentUDP,
-				       SysName, NotifType, SecType, 
-				       Passwd, EngineID, MMS)) of
+    case (catch write_agent_snmp_files(
+		  Dir, Vsns, ManagerIP, TrapUdp, AgentIP, AgentUDP, SysName,
+		  NotifType, SecType, Passwd, EngineID, MMS)) of
 	ok ->
 	   i("~n- - - - - - - - - - - - -"),
 	   i("Info: 1. SecurityName \"initial\" has noAuthNoPriv read access~n"
@@ -630,19 +637,21 @@ config_manager_sys() ->
 			fun verify_verbosity/1),
     ConfigDbDir = ask("5. Database directory (absolute path)?", 
 		      DefDir, fun verify_dir/1),
-    ConfigDbRepair = ask("6. Database repair "
+    ConfigDbInitError = ask("6. How to handle DB init error?", 
+			    "terminate", fun verify_db_init_error/1),
+    ConfigDbRepair = ask("7. Database repair "
 			 "(true/false/force)?", "true",
 			 fun verify_dets_repair/1),
-    ConfigDbAutoSave = ask("7. Database auto save "
+    ConfigDbAutoSave = ask("8. Database auto save "
 			   "(infinity/milli seconds)?", 
 			   "5000", fun verify_dets_auto_save/1),
     IRB = 
-	case ask("8. Inform request behaviour (auto/user)?", 
+	case ask("9. Inform request behaviour (auto/user)?", 
 		 "auto", fun verify_irb/1) of
 	    auto ->
 		auto;
 	    user ->
-		case ask("8b. Use default GC timeout"
+		case ask("9b. Use default GC timeout"
 			 "(default/seconds)?",
 			 "default", fun verify_irb_user/1) of
 		    default ->
@@ -651,31 +660,31 @@ config_manager_sys() ->
 			{user, IrbGcTo}
 		end
 	end,
-    ServerVerb = ask("9. Server verbosity "
+    ServerVerb = ask("10. Server verbosity "
 			"(silence/info/log/debug/trace)?", 
 			"silence",
 			fun verify_verbosity/1),
-    ServerTimeout = ask("10. Server GC timeout?", "30000",
+    ServerTimeout = ask("11. Server GC timeout?", "30000",
 			   fun verify_timeout/1),    
-    NoteStoreVerb = ask("11. Note store verbosity "
+    NoteStoreVerb = ask("12. Note store verbosity "
 			"(silence/info/log/debug/trace)?", 
 			"silence",
 			fun verify_verbosity/1),
-    NoteStoreTimeout = ask("12. Note store GC timeout?", "30000",
+    NoteStoreTimeout = ask("13. Note store GC timeout?", "30000",
 			   fun verify_timeout/1),    
-    NetIfMod = ask("13. Which network interface module shall be used?",
+    NetIfMod = ask("14. Which network interface module shall be used?",
 		   "snmpm_net_if", fun verify_module/1),
-    NetIfVerb = ask("14. Network interface verbosity "
+    NetIfVerb = ask("15. Network interface verbosity "
 		    "(silence/info/log/debug/trace)?", "silence",
 		    fun verify_verbosity/1),
-    NetIfBindTo = ask("15. Bind the manager IP address "
+    NetIfBindTo = ask("16. Bind the manager IP address "
 		      "(true/false)?",
 		      "false", fun verify_bool/1),
-    NetIfNoReuse = ask("16. Shall the manager IP address and port "
+    NetIfNoReuse = ask("17. Shall the manager IP address and port "
 		       "be not reusable (true/false)?",
 		       "false", fun verify_bool/1),
     NetIfRecbuf = 
-	case ask("17. Receive buffer size of the manager (in bytes) "
+	case ask("18. Receive buffer size of the manager (in bytes) "
 		 "(default/pos integer)?", "default", 
 		 fun verify_netif_recbuf/1) of
 	    default ->
@@ -684,7 +693,7 @@ config_manager_sys() ->
 		[{recbuf, RecBufSz}]
 	end,
     NetIfSndbuf = 
-	case ask("18. Send buffer size of the manager (in bytes) "
+	case ask("19. Send buffer size of the manager (in bytes) "
 		 "(default/pos integer)?", "default", 
 		 fun verify_netif_sndbuf/1) of
 	    default ->
@@ -700,28 +709,28 @@ config_manager_sys() ->
 	 {verbosity, NetIfVerb},
 	 {options,   NetIfOpts}], 
     ATL = 
-	case ask("19. Shall the manager use an audit trail log "
+	case ask("20. Shall the manager use an audit trail log "
 		 "(y/n)?",
 		 "n", fun verify_yes_or_no/1) of
 	    yes ->
-		ATLType = ask("19b. Audit trail log type "
+		ATLType = ask("20b. Audit trail log type "
 			      "(write/read_write)?",
 			      "read_write", fun verify_atl_type/1),
-		ATLDir = ask("19c. Where to store the "
+		ATLDir = ask("20c. Where to store the "
 			     "audit trail log?",
 			     DefDir, fun verify_dir/1),
-		ATLMaxFiles = ask("19d. Max number of files?", 
+		ATLMaxFiles = ask("20d. Max number of files?", 
 				  "10", 
 				  fun verify_pos_integer/1),
-		ATLMaxBytes = ask("19e. Max size (in bytes) "
+		ATLMaxBytes = ask("20e. Max size (in bytes) "
 				  "of each file?", 
 				  "10240", 
 				  fun verify_pos_integer/1),
 		ATLSize = {ATLMaxBytes, ATLMaxFiles},
-		ATLRepair = ask("19f. Audit trail log repair "
+		ATLRepair = ask("20f. Audit trail log repair "
 				"(true/false/truncate/snmp_repair)?", "true",
 				fun verify_atl_repair/1),
-		ATLSeqNo = ask("19g. Audit trail log sequence-numbering "
+		ATLSeqNo = ask("20g. Audit trail log sequence-numbering "
 			       "(true/false)?", "false",
 			       fun verify_atl_seqno/1),
 		[{audit_trail_log, [{type,   ATLType},
@@ -733,14 +742,14 @@ config_manager_sys() ->
 		[]
 	end,
     DefUser = 
-	case ask("20. Do you wish to assign a default user [yes] or use~n"
+	case ask("21. Do you wish to assign a default user [yes] or use~n"
 		 "    the default settings [no] (y/n)?", "n", 
 		 fun verify_yes_or_no/1) of
 	    yes ->
-		DefUserMod = ask("20b. Default user module?", 
+		DefUserMod = ask("21b. Default user module?", 
 				 "snmpm_user_default",
 				 fun verify_module/1),
-		DefUserData = ask("20c. Default user data?", "undefined",
+		DefUserData = ask("21c. Default user data?", "undefined",
 				  fun verify_user_data/1),
 		[{def_user_mod,  DefUserMod},
 		 {def_user_data, DefUserData}];
@@ -750,11 +759,12 @@ config_manager_sys() ->
     SysConfig = 
 	[{priority,   Prio},
 	 {versions,   Vsns},
-	 {config,     [{dir,       ConfigDir}, 
-		       {verbosity, ConfigVerb},
-		       {db_dir,    ConfigDbDir},
-		       {repair,    ConfigDbRepair},
-		       {auto_save, ConfigDbAutoSave}]},
+	 {config,     [{dir,           ConfigDir},
+		       {db_dir,        ConfigDbDir}, 
+		       {db_init_error, ConfigDbInitError},
+		       {repair,        ConfigDbRepair},
+		       {auto_save,     ConfigDbAutoSave}, 
+		       {verbosity,     ConfigVerb}]},
 	 {inform_request_behaviour, IRB},
 	 {mibs,       []},
 	 {server,     [{timeout,   ServerTimeout},
@@ -1069,6 +1079,16 @@ verify_dir(Dir) ->
 	_E -> 
 	    {error, "invalid directory (not absolute): " ++ Dir}
     end.
+
+
+verify_db_init_error("terminate") ->
+    {ok, true};
+verify_db_init_error("create") ->
+    {ok, create};
+verify_db_init_error("create_db_and_dir") ->
+    {ok, create_db_and_dir};
+verify_db_init_error(R) ->
+    {error, "invalid DB init error: " ++ R}.
 	    
 
 verify_notif_type("trap")   -> {ok, trap};
@@ -1164,13 +1184,20 @@ verify_dets_auto_save(I0) ->
 
 
 %% I know that this is a little of the edge, but...
+verify_module(M) when is_atom(M) ->
+    {ok, M};
+verify_module(M0) when is_list(M0) ->
+    {ok, list_to_atom(M0)};
 verify_module(M0) ->
-    case (catch list_to_atom(M0)) of
-	M when is_atom(M) ->
-	    {ok, M};
-	_ ->
-	    {error, "invalid module: " ++ M0}
-    end.
+    {error, lists:flatten(io_lib:format("invalid module: ~p", [M0]))}.
+
+%% verify_module(M0) ->
+%%     case (catch list_to_atom(M0)) of
+%% 	M when is_atom(M) ->
+%% 	    {ok, M};
+%% 	_ ->
+%% 	    {error, "invalid module: " ++ M0}
+%%     end.
 	 
 
 verify_agent_type("master") ->
@@ -1557,35 +1584,63 @@ remove_newline(Str) ->
 %% File generation
 %%======================================================================
 
+write_agent_snmp_files(
+  Dir, Vsns, Domain, ManagerAddr, AgentAddr, SysName)
+  when is_list(Dir),
+       is_list(Vsns),
+       is_atom(Domain),
+       is_list(SysName) ->
+    write_agent_snmp_files(
+      Dir, Vsns, Domain, ManagerAddr, AgentAddr, SysName,
+      trap, none, "", "agentEngine", 484).
+
 %%----------------------------------------------------------------------
 %% Dir: string()  (ex: "../conf/")
 %% ManagerIP, AgentIP: [int(),int(),int(),int()]
 %% TrapUdp, AgentUDP: integer()
 %% SysName: string()
 %%----------------------------------------------------------------------
-write_agent_snmp_files(Dir, Vsns, ManagerIP, TrapUdp, 
-		       AgentIP, AgentUDP, SysName) 
-  when is_list(Dir) andalso 
-       is_list(Vsns) andalso 
-       is_list(ManagerIP) andalso 
-       is_integer(TrapUdp) andalso 
-       is_list(AgentIP) andalso 
-       is_integer(AgentUDP) andalso 
+write_agent_snmp_files(
+  Dir, Vsns, ManagerIP, TrapUDP, AgentIP, AgentUDP, SysName)
+  when is_list(Dir) andalso
+       is_list(Vsns) andalso
+       is_list(ManagerIP) andalso
+       is_integer(TrapUDP) andalso
+       is_list(AgentIP) andalso
+       is_integer(AgentUDP) andalso
        is_list(SysName) ->
-    write_agent_snmp_files(Dir, Vsns, ManagerIP, TrapUdp, AgentIP, AgentUDP,
-			   SysName, "trap", none, "", "agentEngine", 484).
+    write_agent_snmp_files(
+      Dir, Vsns, ManagerIP, TrapUDP, AgentIP, AgentUDP, SysName,
+      trap, none, "", "agentEngine", 484).
 
 %% 
 %% ----- Agent config files generator functions -----
 %% 
 
-write_agent_snmp_files(Dir, Vsns, ManagerIP, TrapUdp, AgentIP, AgentUDP, 
-		       SysName, NotifType, SecType, Passwd, EngineID, MMS) ->
+write_agent_snmp_files(
+  Dir, Vsns, Domain, ManagerAddr, AgentAddr, SysName,
+  NotifType, SecType, Passwd, EngineID, MMS) ->
+    write_agent_snmp_conf(Dir, Domain, AgentAddr, EngineID, MMS),
+    write_agent_snmp_context_conf(Dir),
+    write_agent_snmp_community_conf(Dir),
+    write_agent_snmp_standard_conf(Dir, SysName),
+    write_agent_snmp_target_addr_conf(Dir, Domain, ManagerAddr, Vsns),
+    write_agent_snmp_target_params_conf(Dir, Vsns),
+    write_agent_snmp_notify_conf(Dir, NotifType),
+    write_agent_snmp_usm_conf(Dir, Vsns, EngineID, SecType, Passwd),
+    write_agent_snmp_vacm_conf(Dir, Vsns, SecType),
+    ok.
+
+write_agent_snmp_files(
+  Dir, Vsns, ManagerIP, TrapUDP, AgentIP, AgentUDP, SysName,
+  NotifType, SecType, Passwd, EngineID, MMS) ->
+    Domain = snmp_target_mib:default_domain(),
+    ManagerAddr = {ManagerIP, TrapUDP},
     write_agent_snmp_conf(Dir, AgentIP, AgentUDP, EngineID, MMS),
     write_agent_snmp_context_conf(Dir),
     write_agent_snmp_community_conf(Dir),
     write_agent_snmp_standard_conf(Dir, SysName),
-    write_agent_snmp_target_addr_conf(Dir, ManagerIP, TrapUdp, Vsns),
+    write_agent_snmp_target_addr_conf(Dir, Domain, ManagerAddr, Vsns),
     write_agent_snmp_target_params_conf(Dir, Vsns),
     write_agent_snmp_notify_conf(Dir, NotifType),
     write_agent_snmp_usm_conf(Dir, Vsns, EngineID, SecType, Passwd),
@@ -1593,11 +1648,40 @@ write_agent_snmp_files(Dir, Vsns, ManagerIP, TrapUdp, AgentIP, AgentUDP,
     ok.
 
 
+
 %% 
 %% ------ [agent] agent.conf ------
 %% 
 
-write_agent_snmp_conf(Dir, AgentIP, AgentUDP, EngineID, MMS) -> 
+write_agent_snmp_conf(Dir, Transports, EngineID, MMS) ->
+    Conf =
+	[{intAgentTransports,       Transports},
+	 {snmpEngineID,             EngineID},
+	 {snmpEngineMaxMessageSize, MMS}],
+    do_write_agent_snmp_conf(Dir, Conf).
+
+write_agent_snmp_conf(Dir, Domain, AgentAddr, EngineID, MMS)
+  when is_atom(Domain) ->
+    {AgentIP, AgentUDP} = AgentAddr,
+    Conf =
+	[{intAgentTransportDomain,  Domain},
+	 {intAgentUDPPort,          AgentUDP},
+	 {intAgentIpAddress,        AgentIP},
+	 {snmpEngineID,             EngineID},
+	 {snmpEngineMaxMessageSize, MMS}],
+    do_write_agent_snmp_conf(Dir, Conf);
+write_agent_snmp_conf(Dir, AgentIP, AgentUDP, EngineID, MMS)
+  when is_integer(AgentUDP) ->
+    Conf =
+	[{intAgentUDPPort,          AgentUDP},
+	 {intAgentIpAddress,        AgentIP},
+	 {snmpEngineID,             EngineID},
+	 {snmpEngineMaxMessageSize, MMS}],
+    do_write_agent_snmp_conf(Dir, Conf);
+write_agent_snmp_conf(_Dir, Domain, AgentAddr, _EngineID, _MMS) ->
+    error({bad_address, {Domain, AgentAddr}}).
+
+do_write_agent_snmp_conf(Dir, Conf) ->
     Comment = 
 "%% This file defines the Agent local configuration info\n"
 "%% The data is inserted into the snmpEngine* variables defined\n"
@@ -1612,11 +1696,7 @@ write_agent_snmp_conf(Dir, AgentIP, AgentUDP, EngineID, MMS) ->
 "%% {snmpEngineID, \"agentEngine\"}.\n"
 "%% {snmpEngineMaxMessageSize, 484}.\n"
 "%%\n\n",
-    Hdr = header() ++ Comment, 
-    Conf = [{intAgentUDPPort,          AgentUDP}, 
-	    {intAgentIpAddress,        AgentIP},
-	    {snmpEngineID,             EngineID},
-	    {snmpEngineMaxMessageSize, MMS}],
+    Hdr = header() ++ Comment,
     write_agent_config(Dir, Hdr, Conf).
 
 write_agent_config(Dir, Hdr, Conf) ->
@@ -1722,17 +1802,19 @@ update_agent_standard_config(Dir, Conf) ->
 %% ------ target_addr.conf ------
 %% 
 
-write_agent_snmp_target_addr_conf(Dir, ManagerIp, UDP, Vsns) -> 
-    Timeout    = 1500, 
-    RetryCount = 3, 
-    write_agent_snmp_target_addr_conf(Dir, ManagerIp, UDP, 
-				      Timeout, RetryCount, 
-				      Vsns).
+write_agent_snmp_target_addr_conf(Dir, Addresses, Vsns) ->
+    Timeout    = 1500,
+    RetryCount = 3,
+    write_agent_snmp_target_addr_conf(
+      Dir, Addresses, Timeout, RetryCount, Vsns).
 
-write_agent_snmp_target_addr_conf(Dir, ManagerIp, UDP, 
-				  Timeout, RetryCount, 
-				  Vsns) -> 
-    Comment = 
+write_agent_snmp_target_addr_conf(Dir, Domain_or_Ip, Addr_or_Port, Vsns) ->
+    Addresses = [{Domain_or_Ip, Addr_or_Port}],
+    write_agent_snmp_target_addr_conf(Dir, Addresses, Vsns).
+
+write_agent_snmp_target_addr_conf(
+  Dir, Addresses, Timeout, RetryCount, Vsns) ->
+    Comment =
 "%% This file defines the target address parameters.\n"
 "%% The data is inserted into the snmpTargetAddrTable defined\n"
 "%% in SNMP-TARGET-MIB, and in the snmpTargetAddrExtTable defined\n"
@@ -1751,36 +1833,59 @@ write_agent_snmp_target_addr_conf(Dir, ManagerIp, UDP,
 "%%  [127,0,0,0],  2048}.\n"
 "%%\n\n",
     Hdr = header() ++ Comment,
-    F = fun(v1 = Vsn, Acc) ->
-		[{mk_ip(ManagerIp, Vsn), 
-		  snmp_target_mib:default_domain(), 
-		  ManagerIp, UDP, Timeout, RetryCount, 
-		  "std_trap", mk_param(Vsn), "", [], 2048}| Acc];
-	   (v2 = Vsn, Acc) ->
-		[{mk_ip(ManagerIp, Vsn), 
-		  snmp_target_mib:default_domain(), 
-		  ManagerIp, UDP, Timeout, RetryCount, 
-		  "std_trap", mk_param(Vsn), "", [], 2048},
-		 {lists:flatten(io_lib:format("~s.2",[mk_ip(ManagerIp, Vsn)])),
-		  ManagerIp, UDP, Timeout, RetryCount, 
-		  "std_inform", mk_param(Vsn), "", [], 2048}| Acc];
-	   (v3 = Vsn, Acc) ->
-		[{mk_ip(ManagerIp, Vsn), 
-		  snmp_target_mib:default_domain(), 
-		  ManagerIp, UDP, Timeout, RetryCount, 
-		  "std_trap", mk_param(Vsn), "", [], 2048},
-		 {lists:flatten(io_lib:format("~s.3",[mk_ip(ManagerIp, Vsn)])),
-		  ManagerIp, UDP, Timeout, RetryCount, 
-		  "std_inform", mk_param(Vsn), "mgrEngine", [], 2048}| Acc]
-	end,
-    Conf = lists:foldl(F, [], Vsns),
+    Conf =
+	lists:foldl(
+	  fun ({Domain_or_Ip, Addr_or_Port} = Address, OuterAcc) ->
+		  lists:foldl(
+		    fun(v1 = Vsn, Acc) ->
+			    [{mk_name(Address, Vsn),
+			      Domain_or_Ip, Addr_or_Port,
+			      Timeout, RetryCount,
+			      "std_trap", mk_param(Vsn), "",
+			      [], 2048}| Acc];
+		       (v2 = Vsn, Acc) ->
+			    [{mk_name(Address, Vsn),
+			      Domain_or_Ip, Addr_or_Port,
+			      Timeout, RetryCount,
+			      "std_trap", mk_param(Vsn), "",
+			      [], 2048},
+			       {lists:flatten(
+				  io_lib:format(
+				    "~s.2", [mk_name(Address, Vsn)])),
+				Domain_or_Ip, Addr_or_Port,
+				Timeout, RetryCount,
+				"std_inform", mk_param(Vsn), "",
+				[], 2048}| Acc];
+		       (v3 = Vsn, Acc) ->
+			    [{mk_name(Address, Vsn),
+			      Domain_or_Ip, Addr_or_Port,
+			      Timeout, RetryCount,
+			      "std_trap", mk_param(Vsn), "",
+			      [], 2048},
+			     {lists:flatten(
+				io_lib:format(
+				  "~s.3", [mk_name(Address, Vsn)])),
+			      Domain_or_Ip, Addr_or_Port,
+			      Timeout, RetryCount,
+			      "std_inform", mk_param(Vsn), "mgrEngine",
+			      [], 2048} | Acc]
+		    end, OuterAcc, Vsns)
+	  end, [], Addresses),
     write_agent_target_addr_config(Dir, Hdr, Conf).
 
+write_agent_snmp_target_addr_conf(
+  Dir, Domain_or_Ip, Addr_or_Port, Timeout, RetryCount, Vsns) ->
+    Addresses = [{Domain_or_Ip, Addr_or_Port}],
+    write_agent_snmp_target_addr_conf(
+      Dir, Addresses, Timeout, RetryCount, Vsns).
+
 mk_param(Vsn) ->
     lists:flatten(io_lib:format("target_~w", [Vsn])).
 
-mk_ip([A,B,C,D], Vsn) ->
-    lists:flatten(io_lib:format("~w.~w.~w.~w ~w", [A,B,C,D,Vsn])).
+mk_name(Address, Vsn) ->
+    lists:flatten(
+      io_lib:format(
+	"~s ~w", [snmp_conf:mk_addr_string(Address), Vsn])).
 
 write_agent_target_addr_config(Dir, Hdr, Conf) ->
     snmpa_conf:write_target_addr_config(Dir, Hdr, Conf).
@@ -2014,7 +2119,24 @@ write_manager_snmp_files(Dir, IP, Port, MMS, EngineID,
 %% ------ manager.conf ------
 %% 
 
-write_manager_snmp_conf(Dir, IP, Port, MMS, EngineID) -> 
+write_manager_snmp_conf(Dir, Transports, MMS, EngineID) ->
+    Comment =
+"%% This file defines the Manager local configuration info\n"
+"%% Each row is a 2-tuple:\n"
+"%% {Variable, Value}.\n"
+"%% For example\n"
+"%% {transports,       [{transportDomainUdpIpv4, {{127,42,17,5}, 5000}}]}.\n"
+"%% {engine_id,        \"managerEngine\"}.\n"
+"%% {max_message_size, 484}.\n"
+"%%\n\n",
+    Hdr = header() ++ Comment,
+    Conf =
+	[{transports, Transports},
+	 {engine_id,        EngineID},
+	 {max_message_size, MMS}],
+    write_manager_config(Dir, Hdr, Conf).
+
+write_manager_snmp_conf(Dir, Domain_or_IP, Addr_or_Port, MMS, EngineID) ->
     Comment = 
 "%% This file defines the Manager local configuration info\n"
 "%% Each row is a 2-tuple:\n"
@@ -2026,10 +2148,20 @@ write_manager_snmp_conf(Dir, IP, Port, MMS, EngineID) ->
 "%% {max_message_size, 484}.\n"
 "%%\n\n",
     Hdr = header() ++ Comment,
-    Conf = [{port,             Port}, 
-            {address,          IP}, 
-	    {engine_id,        EngineID}, 
-	    {max_message_size, MMS}], 
+    Conf =
+	case Addr_or_Port of
+	    {IP, Port} when is_integer(Port), is_atom(Domain_or_IP) ->
+		[{domain,  Domain_or_IP},
+		 {port,    Port},
+		 {address, IP}];
+	    _ when is_integer(Addr_or_Port) ->
+		[{port,    Addr_or_Port},
+		 {address, Domain_or_IP}];
+	    _ ->
+		error({bad_address, {Domain_or_IP, Addr_or_Port}})
+	end ++
+	[{engine_id,        EngineID},
+	 {max_message_size, MMS}],
     write_manager_config(Dir, Hdr, Conf).
 
 write_manager_config(Dir, Hdr, Conf) ->
@@ -2168,6 +2300,8 @@ write_sys_config_file_agent_opt(Fid, {config, Opts}) ->
     ok = io:format(Fid, "}", []);
 write_sys_config_file_agent_opt(Fid, {db_dir, Dir}) ->
     ok = io:format(Fid, "     {db_dir, \"~s\"}", [Dir]);
+write_sys_config_file_agent_opt(Fid, {db_init_error, Action}) ->
+    ok = io:format(Fid, "     {db_init_error, ~w}", [Action]);
 write_sys_config_file_agent_opt(Fid, {mib_storage, ets}) ->
     ok = io:format(Fid, "     {mib_storage, ets}", []);
 write_sys_config_file_agent_opt(Fid, {mib_storage, {dets, Dir}}) ->
@@ -2344,6 +2478,8 @@ write_sys_config_file_manager_config_opt(Fid, {dir, Dir}) ->
     ok = io:format(Fid, "{dir, \"~s\"}", [Dir]);
 write_sys_config_file_manager_config_opt(Fid, {db_dir, Dir}) ->
     ok = io:format(Fid, "{db_dir, \"~s\"}", [Dir]);
+write_sys_config_file_manager_config_opt(Fid, {db_init_error, Action}) ->
+    ok = io:format(Fid, "{db_init_error, ~w}", [Action]);
 write_sys_config_file_manager_config_opt(Fid, {repair, Rep}) ->
     ok = io:format(Fid, "{repair, ~w}", [Rep]);
 write_sys_config_file_manager_config_opt(Fid, {auto_save, As}) ->
@@ -2383,83 +2519,92 @@ header() ->
 		  [?MODULE, ?version, Y, Mo, D, H, Mi, S]).
 
 
-%% *If* these functions are successfull, they successfully return anything
-%% (which is ignored), but they fail with either a throw or an exit or 
-%% something similar.
-
-%% Verification of one config entry read from a file
--type(verify_config_entry_function() :: 
-      fun((Entry :: term()) -> ok | {error, Reason :: term()})).
-
-%% Verification of config to be written
--type(verify_config_function() :: 
-      fun(() -> void())).
-
-%% Write config to file (as defined by Fd)
--type(write_config_function() :: 
-      fun((Fd :: file:io_device()) -> void())).
-
--spec write_config_file(Dir :: string(), 
-			FileName :: string(), 
-			Verify :: verify_config_function(), 
-			Write :: write_config_function()) ->
-    ok | {error, Reason :: term()}.
-
-write_config_file(Dir, FileName, Verify, Write) 
-  when (is_list(Dir) andalso 
-	is_list(FileName) andalso 
-	is_function(Verify) andalso 
-	is_function(Write)) ->
+%% *If* these functions are successfull, they successfully return
+%% (value is ignored), but they fail preferably with
+%% throw({error, Reason}).  Other exceptions are also handled.
+
+%% Sorting order for config entries (see lists:sort/2)
+-type(order_config_entry_function() ::
+	fun((term(), term()) -> boolean())).
+
+%% Check of config entries. Initial State is 'undefined'
+-type(check_config_entry_function() ::
+	fun((Entry :: term(), State :: undefined | term()) ->
+		    {ok | {ok, NewEntry :: term()}, NewState :: term()})).
+
+%% Write configuration entries to file descriptor Fd
+-type(write_config_function() ::
+	fun((Fd :: file:io_device(), [Entry :: term()]) -> ok)).
+
+-spec write_config_file(
+	Dir :: string(),
+	FileName :: string(),
+	Order :: order_config_entry_function(),
+	Check :: check_config_entry_function(),
+	Write :: write_config_function(),
+	Entries :: [term()]) ->
+			       ok | {error, term()}.
+
+write_config_file(Dir, FileName, Order, Check, Write, Entries)
+  when is_list(Dir), is_list(FileName),
+       is_function(Order), is_function(Check), is_function(Write),
+       is_list(Entries) ->
     try
-	begin
-	    do_write_config_file(Dir, FileName, Verify, Write)
-	end
+	SortedEntries = lists:sort(Order, Entries),
+	_ =
+	    lists:foldl(
+	      fun (Entry, State) ->
+		      case Check(Entry, State) of
+			  {Ok, NewState} when is_list(Ok) ->
+			      NewState;
+			  {ok, NewState} ->
+			      NewState;
+			  {{ok, _}, NewState} ->
+			      NewState
+		      end
+	      end, undefined, SortedEntries),
+	ok
+    of
+	_ ->
+	    case file:open(filename:join(Dir, FileName), [write]) of
+		{ok, Fd} ->
+		    write_config_file(Dir, FileName, Write, Entries, Fd);
+		Error ->
+		    Error
+	    end
     catch
-	throw:Error ->
-	    Error;
-	  T:E ->
-	    {error, {failed_write, Dir, FileName, T, E}}
-    end.
-
-
-do_write_config_file(Dir, FileName, Verify, Write) ->
-    Verify(),
-    case file:open(filename:join(Dir, FileName), [write]) of
-	{ok, Fd} ->
-	    file_write_and_close(Write, Fd, Dir, FileName);
 	Error ->
-	    Error
-    end.
-
-append_config_file(Dir, FileName, Verify, Write) 
-  when (is_list(Dir) andalso 
-	is_list(FileName) andalso 
-	is_function(Verify) andalso 
-	is_function(Write)) ->
-    try
-	begin
-	    do_append_config_file(Dir, FileName, Verify, Write)
-	end
-    catch
-	throw:Error ->
+	    S = erlang:get_stacktrace(),
+	    d("File write of ~s throwed: ~p~n    ~p~n",
+	      [FileName, Error, S]),
 	    Error;
-	  T:E ->
-	    {error, {failed_append, Dir, FileName, T, E}}
+	C:E ->
+	    S = erlang:get_stacktrace(),
+	    d("File write of ~s exception: ~p:~p~n    ~p~n",
+	      [FileName,C,E,S]),
+	    {error, {failed_write, Dir, FileName, {C, E, S}}}
     end.
 
-do_append_config_file(Dir, FileName, Verify, Write) ->
-    Verify(),
-    case file:open(filename:join(Dir, FileName), [read, write]) of
-	{ok, Fd} ->
-	    file:position(Fd, eof),
-	    file_write_and_close(Write, Fd, Dir, FileName);
+write_config_file(Dir, FileName, Write, Entries, Fd) ->
+    try	Write(Fd, Entries) of
+	ok ->
+	    close_config_file(Dir, FileName, Fd)
+    catch
 	Error ->
-	    Error
+	    S = erlang:get_stacktrace(),
+	    d("File write of ~s throwed: ~p~n    ~p~n",
+	      [FileName, Error, S]),
+	    close_config_file(Dir, FileName, Fd),
+	    Error;
+	C:E ->
+	    S = erlang:get_stacktrace(),
+	    d("File write of ~s exception: ~p:~p~n    ~p~n",
+	      [FileName,C,E,S]),
+	    close_config_file(Dir, FileName, Fd),
+	    {error, {failed_write, Dir, FileName, {C, E, S}}}
     end.
 
-
-file_write_and_close(Write, Fd, Dir, FileName) ->
-    ok = Write(Fd),
+close_config_file(Dir, FileName, Fd) ->
     case file:sync(Fd) of
 	ok ->
 	    case file:close(Fd) of
@@ -2469,63 +2614,159 @@ file_write_and_close(Write, Fd, Dir, FileName) ->
 		    {error, {failed_closing, Dir, FileName, Reason}}
 	    end;
 	{error, Reason} ->
+	    _ = file:close(Fd),
 	    {error, {failed_syncing, Dir, FileName, Reason}}
     end.
 
 
--spec read_config_file(Dir :: string(), 
-		       FileName :: string(), 
-		       Verify :: verify_config_entry_function()) ->
-    {ok, Config :: list()} | {error, Reason :: term()}.
 
-read_config_file(Dir, FileName, Verify) 
-  when is_list(Dir) andalso is_list(FileName) andalso is_function(Verify) ->
-    (catch do_read_config_file(Dir, FileName, Verify)).
+-spec append_config_file(
+	Dir :: string(),
+	FileName :: string(),
+	Order :: order_config_entry_function(),
+	Check :: check_config_entry_function(),
+	Write :: write_config_function(),
+	Entries :: [term()]) ->
+			       ok | {error, term()}.
 
-do_read_config_file(Dir, FileName, Verify) ->
+append_config_file(Dir, FileName, Order, Check, Write, Entries)
+  when is_list(Dir), is_list(FileName),
+       is_function(Order), is_function(Check), is_function(Write),
+       is_list(Entries) ->
+    case file:open(filename:join(Dir, FileName), [read, write]) of
+	{ok, Fd} ->
+	    append_config_file(
+	      Dir, FileName, Order, Check, Write, Entries, Fd);
+	Error ->
+	    Error
+    end.
+
+append_config_file(Dir, FileName, Order, Check, Write, Entries, Fd) ->
+    try
+	%% Verify the entries together with the file content
+	LinesInFileR = read_lines(Fd, [], 1),
+	StartLine =
+	    case LinesInFileR of
+		[] ->
+		    1;
+		[{_, _, EndLine} | _] ->
+		    EndLine
+	    end,
+	LinesR = prepend_lines(LinesInFileR, Entries, StartLine),
+	SortedLines = sort_lines(lists:reverse(LinesR), Order),
+	_ = verify_lines(SortedLines, Check, undefined, []),
+	%% Append to the file
+	Write(Fd, Entries)
+    of
+	ok ->
+	    close_config_file(Dir, FileName, Fd)
+    catch
+	Error ->
+	    S = erlang:get_stacktrace(),
+	    d("File append of ~s throwed: ~p~n    ~p~n",
+	      [FileName, Error, S]),
+	    close_config_file(Dir, FileName, Fd),
+	    Error;
+	C:E ->
+	    S = erlang:get_stacktrace(),
+	    d("File append of ~s exception: ~p:~p~n    ~p~n",
+	      [FileName,C,E,S]),
+	    close_config_file(Dir, FileName, Fd),
+	    {error, {failed_append, Dir, FileName, {C, E, S}}}
+    end.
+
+%% Fake line numbers, one per entry
+prepend_lines(Lines, [], _) ->
+    Lines;
+prepend_lines(Lines, [Entry | Entries], StartLine) ->
+    EndLine = StartLine + 1,
+    prepend_lines([{StartLine, Entry, EndLine} | Lines], Entries, EndLine).
+
+
+
+-spec read_config_file(
+	Dir :: string(),
+	FileName :: string(),
+	Order :: order_config_entry_function(),
+	Check :: check_config_entry_function()) ->
+				{ok, Config :: [Entry :: term()]} |
+				{error, Reason :: term()}.
+
+read_config_file(Dir, FileName, Order, Check)
+  when is_list(Dir), is_list(FileName),
+       is_function(Order), is_function(Check) ->
     case file:open(filename:join(Dir, FileName), [read]) of
 	{ok, Fd} ->
-	    Result = read_loop(Fd, [], Verify, 1),
-	    file:close(Fd),
-	    Result;
+	    try
+		Lines = lists:reverse(read_lines(Fd, [], 1)),
+		SortedLines = sort_lines(Lines, Order),
+		{ok, verify_lines(SortedLines, Check, undefined, [])}
+	    catch
+		Error ->
+		    S = erlang:get_stacktrace(),
+		    d("File read of ~s throwed: ~p~n    ~p~n",
+		      [FileName, Error, S]),
+		    {error, Error};
+		T:E ->
+		    S = erlang:get_stacktrace(),
+		    d("File read of ~s exception: ~p:~p~n    ~p~n",
+		      [FileName,T,E,S]),
+		    {error, {failed_read, Dir, FileName, {T, E, S}}}
+	    after
+		file:close(Fd)
+	    end;
 	{error, Reason} ->
 	    {error, {Reason, FileName}}
     end.
 
-read_loop(Fd, Acc, Check, StartLine) ->
-    case read_term(Fd, StartLine) of
+read_lines(Fd, Acc, StartLine) ->
+    case read_and_parse_term(Fd, StartLine) of
 	{ok, Term, EndLine} ->
-	    case (catch Check(Term)) of
-		ok ->
-		    read_loop(Fd, [Term | Acc], Check, EndLine);
-		{error, Reason} ->
-		    {error, {failed_check, StartLine, EndLine, Reason}};
-		Error ->
-		    {error, {failed_check, StartLine, EndLine, Error}}
-	    end;
-	{error, EndLine, Error} ->
-            {error, {failed_reading, StartLine, EndLine, Error}};
-        eof ->
-            {ok, lists:reverse(Acc)}
+	    read_lines(Fd, [{StartLine, Term, EndLine}|Acc], EndLine);
+	{error, Error, EndLine} ->
+            throw({failed_reading, StartLine, EndLine, Error});
+        {eof, _EndLine} ->
+	    Acc
     end.
-	    
-read_term(Fd, StartLine) ->
+
+read_and_parse_term(Fd, StartLine) ->
     case io:request(Fd, {get_until, "", erl_scan, tokens, [StartLine]}) of
 	{ok, Tokens, EndLine} ->
 	    case erl_parse:parse_term(Tokens) of
                 {ok, Term} ->
                     {ok, Term, EndLine};
                 {error, {Line, erl_parse, Error}} ->
-                    {error, Line, {parse_error, Error}}
+                    {error, {parse_error, Error}, Line}
             end;
-        {error, E, EndLine} ->
-            {error, EndLine, E};
-        {eof, _EndLine} ->
-            eof;
         Other ->
             Other
     end.
 
+sort_lines(Lines, Order) ->
+    lists:sort(
+      fun ({_, T1, _}, {_, T2, _}) ->
+	      Order(T1, T2)
+      end, Lines).
+
+verify_lines([], _, _, Acc) ->
+    lists:reverse(Acc);
+verify_lines(
+  [{StartLine, Term, EndLine}|Lines], Check, State, Acc) ->
+    try Check(Term, State) of
+	{Terms, NewState} when is_list(Terms) ->
+	    verify_lines(Lines, Check, NewState, Terms ++ Acc);
+	{ok, NewState} ->
+	    verify_lines(Lines, Check, NewState, [Term|Acc]);
+	{{ok, NewTerm}, NewState} ->
+	    verify_lines(Lines, Check, NewState, [NewTerm|Acc])
+    catch
+	{error, Reason} ->
+	    throw({failed_check, StartLine, EndLine, Reason});
+	C:R ->
+	    S = erlang:get_stacktrace(),
+	    throw({failed_check, StartLine, EndLine, {C, R, S}})
+    end.
+
 
 agent_snmp_mk_secret(Alg, Passwd, EngineID) ->
     snmp_usm:passwd2localized_key(Alg, Passwd, EngineID).
@@ -2548,8 +2789,8 @@ ensure_started(App) ->
 
 %% -------------------------------------------------------------------------
 
-% d(F, A) ->
-%     i("DBG: " ++ F, A).
+d(F, A) ->
+    i("DBG: " ++ F, A).
 
 i(F) ->
     i(F, []).
diff --git a/lib/snmp/src/misc/snmp_debug.hrl b/lib/snmp/src/misc/snmp_debug.hrl
index dc916ac96a..6ed4af7d50 100644
--- a/lib/snmp/src/misc/snmp_debug.hrl
+++ b/lib/snmp/src/misc/snmp_debug.hrl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2000-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/misc/snmp_log.erl b/lib/snmp/src/misc/snmp_log.erl
index a8c5df0b64..767d801eee 100644
--- a/lib/snmp/src/misc/snmp_log.erl
+++ b/lib/snmp/src/misc/snmp_log.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
@@ -23,9 +24,9 @@
 -export([
 	 create/4, create/5, create/6, open/1, open/2, 
 	 change_size/2, close/1, sync/1, info/1, 
-	 log/4, 
-	 log_to_txt/5, log_to_txt/6, log_to_txt/7,
-	 log_to_io/4,  log_to_io/5,  log_to_io/6
+	 log/3, log/4,
+	 log_to_txt/6, log_to_txt/7, log_to_txt/8, 
+	 log_to_io/5,  log_to_io/6,  log_to_io/7
 	]).
 -export([
 	 upgrade/1, upgrade/2, 
@@ -34,7 +35,17 @@
 -export([
 	 validate/1, validate/2
 	]).
+%% <BACKWARD-COMPAT>
+-export([
+	 log_to_txt/5, 
+	 log_to_io/4 
+	]).
+%% </BACKWARD-COMPAT>
 
+-export_type([
+	      log/0, 
+	      log_time/0
+	     ]).
 
 -define(SNMP_USE_V3, true).
 -include("snmp_types.hrl").
@@ -42,12 +53,24 @@
 -define(VMODULE,"LOG").
 -include("snmp_verbosity.hrl").
 
--define(LOG_FORMAT, internal).
--define(LOG_TYPE,   wrap).
+-define(LOG_FORMAT,    internal).
+-define(LOG_TYPE,      wrap).
+-define(BLOCK_DEFAULT, true). 
 
 -record(snmp_log, {id, seqno}).
 
 
+%%-----------------------------------------------------------------
+%% Types
+%%-----------------------------------------------------------------
+
+-opaque log() :: #snmp_log{}.
+-type log_time() :: null | 
+                    calendar:datetime() | 
+                    {local_time,     calendar:datetime()} |
+                    {universal_time, calendar:datetime()}.
+
+
 %% --------------------------------------------------------------------
 %% Exported functions
 %% --------------------------------------------------------------------
@@ -209,7 +232,20 @@ validate(Log, SeqNoReq)
 		validate_seqno(PrevSN, SeqNo),
 		{Timestamp, SeqNo};
 
-	   ({Timestamp, _Packet, _Addr, _Port}, {PrevTS, _PrevSN}) when SeqNoReq =:= true -> 
+	   ({Timestamp, SeqNo, _Packet, _AddrStr}, {PrevTS, PrevSN})
+	      when is_integer(SeqNo) ->
+		?vtrace("validating log entry when"
+			"~n   Timestamp: ~p"
+			"~n   SeqNo:     ~p"
+			"~n   PrevTS:    ~p"
+			"~n   PrevSN:    ~p",
+			[Timestamp, SeqNo, PrevTS, PrevSN]),
+		validate_timestamp(PrevTS, Timestamp),
+		validate_seqno(PrevSN, SeqNo),
+		{Timestamp, SeqNo};
+
+	   ({Timestamp, _Packet, _Addr, _Port}, {PrevTS, _PrevSN})
+	      when SeqNoReq =:= true ->
 		?vtrace("validating log entry when"
 			"~n   Timestamp: ~p"
 			"~n   PrevTS:    ~p", 
@@ -322,13 +358,20 @@ validate_loop(Error, _Log, _Write, _PrevTS, _PrevSN) ->
 %% log(Log, Packet, Addr, Port)
 %%-----------------------------------------------------------------
 
+log(#snmp_log{id = Log, seqno = SeqNo}, Packet, AddrStr) ->
+    ?vtrace(
+       "log -> entry with~n"
+       "   Log:     ~p~n"
+       "   AddrStr: ~s", [Log, AddrStr]),
+    Entry = make_entry(SeqNo, Packet, AddrStr),
+    disk_log:alog(Log, Entry).
 
-log(#snmp_log{id = Log, seqno = SeqNo}, Packet, Addr, Port) ->
+log(#snmp_log{id = Log, seqno = SeqNo}, Packet, Ip, Port) ->
     ?vtrace("log -> entry with"
 	    "~n   Log:  ~p"
-	    "~n   Addr: ~p"
-	    "~n   Port: ~p", [Log, Addr, Port]),
-    Entry = make_entry(SeqNo, Packet, Addr, Port), 
+	    "~n   Ip: ~p"
+	    "~n   Port: ~p", [Log, Ip, Port]),
+    Entry = make_entry(SeqNo, Packet, Ip, Port),
 %%     io:format("log -> "
 %% 	      "~n   Entry: ~p"
 %% 	      "~n   Info:  ~p"
@@ -340,18 +383,35 @@ log(#snmp_log{id = Log, seqno = SeqNo}, Packet, Addr, Port) ->
 %% 	      "~n", [Res, disk_log:info(Log)]),
     %% disk_log:sync(Log), 
     Res.
-   
 
 
-make_entry(SeqNoGen, Packet, Addr, Port) ->
+
+make_entry(SeqNoGen, Packet, AddrStr)
+  when is_integer(Packet);
+       is_tuple(AddrStr) ->
+    erlang:error(badarg, [SeqNoGen, Packet, AddrStr]);
+make_entry(SeqNoGen, Packet, AddrStr) ->
+    try next_seqno(SeqNoGen) of
+	disabled ->
+	    {timestamp(), Packet, AddrStr};
+	{ok, NextSeqNo} when is_integer(NextSeqNo) ->
+	    {timestamp(), NextSeqNo, Packet, AddrStr}
+    catch
+	_:_ ->
+	    {timestamp(), Packet, AddrStr}
+    end.
+
+make_entry(SeqNoGen, Packet, Ip, Port) when is_integer(Packet) ->
+    erlang:error(badarg, [SeqNoGen, Packet, Ip, Port]);
+make_entry(SeqNoGen, Packet, Ip, Port) ->
     try next_seqno(SeqNoGen) of
 	disabled ->
-	    {timestamp(), Packet, Addr, Port};
-	{ok, NextSeqNo} ->
-	    {timestamp(), NextSeqNo, Packet, Addr, Port}
+	    {timestamp(), Packet, Ip, Port};
+	{ok, NextSeqNo} when is_integer(NextSeqNo) ->
+	    {timestamp(), NextSeqNo, Packet, Ip, Port}
     catch
 	_:_ ->
-	    {timestamp(), Packet, Addr, Port}
+	    {timestamp(), Packet, Ip, Port}
     end.
 
 next_seqno({M, F, A}) ->
@@ -378,53 +438,86 @@ do_change_size(Log, NewSize) ->
 
 %% -- log_to_txt ---
 
+%% <BACKWARD-COMPAT>
 log_to_txt(Log, FileName, Dir, Mibs, TextFile) ->
-    log_to_txt(Log, FileName, Dir, Mibs, TextFile, null, null).
+    log_to_txt(Log, ?BLOCK_DEFAULT, FileName, Dir, Mibs, TextFile).
+%% </BACKWARD-COMPAT>
 
+log_to_txt(Log, Block, FileName, Dir, Mibs, TextFile) 
+  when ((Block =:= true) orelse (Block =:= false)) ->
+    log_to_txt(Log, Block, FileName, Dir, Mibs, TextFile, null, null);
+%% <BACKWARD-COMPAT>
 log_to_txt(Log, FileName, Dir, Mibs, TextFile, Start) ->
-    log_to_txt(Log, FileName, Dir, Mibs, TextFile, Start, null).
-
-log_to_txt(Log, FileName, Dir, Mibs, TextFile, Start, Stop) 
-  when is_list(Mibs) andalso is_list(TextFile) ->
+    log_to_txt(Log, ?BLOCK_DEFAULT, FileName, Dir, Mibs, TextFile, Start, null).
+%% </BACKWARD-COMPAT>
+
+log_to_txt(Log, Block, FileName, Dir, Mibs, TextFile, Start) 
+  when ((Block =:= true) orelse (Block =:= false)) ->
+    log_to_txt(Log, Block, FileName, Dir, Mibs, TextFile, Start, null);
+%% <BACKWARD-COMPAT>
+log_to_txt(Log, FileName, Dir, Mibs, TextFile, Start, Stop) ->
+    log_to_txt(Log, ?BLOCK_DEFAULT, FileName, Dir, Mibs, TextFile, Start, Stop).
+%% </BACKWARD-COMPAT>
+
+log_to_txt(Log, Block, FileName, Dir, Mibs, TextFile, Start, Stop) 
+  when (((Block =:= true) orelse (Block =:= false)) andalso 
+	is_list(Mibs) andalso is_list(TextFile)) ->
     ?vtrace("log_to_txt -> entry with"
 	    "~n   Log:      ~p"
+	    "~n   Block:    ~p"
 	    "~n   FileName: ~p"
 	    "~n   Dir:      ~p"
 	    "~n   Mibs:     ~p"
 	    "~n   TextFile: ~p"
 	    "~n   Start:    ~p"
 	    "~n   Stop:     ~p", 
-	    [Log, FileName, Dir, Mibs, TextFile, Start, Stop]),
+	    [Log, Block, FileName, Dir, Mibs, TextFile, Start, Stop]),
     File = filename:join(Dir, FileName),
     Converter = fun(L) ->
 			do_log_to_file(L, TextFile, Mibs, Start, Stop)
 		end,
-    log_convert(Log, File, Converter).
+    log_convert(Log, Block, File, Converter).
 
 
 %% -- log_to_io ---
 
+%% <BACKWARD-COMPAT>
 log_to_io(Log, FileName, Dir, Mibs) ->
-    log_to_io(Log, FileName, Dir, Mibs, null, null).
+    log_to_io(Log, ?BLOCK_DEFAULT, FileName, Dir, Mibs, null, null).
+%% </BACKWARD-COMPAT>
 
+log_to_io(Log, Block, FileName, Dir, Mibs) 
+  when ((Block =:= true) orelse (Block =:= false)) ->
+    log_to_io(Log, Block, FileName, Dir, Mibs, null, null); 
+%% <BACKWARD-COMPAT>
 log_to_io(Log, FileName, Dir, Mibs, Start) ->
-    log_to_io(Log, FileName, Dir, Mibs, Start, null).
-
-log_to_io(Log, FileName, Dir, Mibs, Start, Stop) 
+    log_to_io(Log, ?BLOCK_DEFAULT, FileName, Dir, Mibs, Start, null).
+%% </BACKWARD-COMPAT>
+
+log_to_io(Log, Block, FileName, Dir, Mibs, Start) 
+  when ((Block =:= true) orelse (Block =:= false)) ->
+    log_to_io(Log, Block, FileName, Dir, Mibs, Start, null); 
+%% <BACKWARD-COMPAT>
+log_to_io(Log, FileName, Dir, Mibs, Start, Stop) ->
+    log_to_io(Log, ?BLOCK_DEFAULT, FileName, Dir, Mibs, Start, Stop).
+%% </BACKWARD-COMPAT>
+
+log_to_io(Log, Block, FileName, Dir, Mibs, Start, Stop) 
   when is_list(Mibs) ->
     ?vtrace("log_to_io -> entry with"
 	    "~n   Log:      ~p"
+	    "~n   Block:    ~p"
 	    "~n   FileName: ~p"
 	    "~n   Dir:      ~p"
 	    "~n   Mibs:     ~p"
 	    "~n   Start:    ~p"
 	    "~n   Stop:     ~p", 
-	    [Log, FileName, Dir, Mibs, Start, Stop]),
+	    [Log, Block, FileName, Dir, Mibs, Start, Stop]),
     File = filename:join(Dir, FileName),
     Converter = fun(L) ->
 			do_log_to_io(L, Mibs, Start, Stop)
 		end,
-    log_convert(Log, File, Converter).
+    log_convert(Log, Block, File, Converter).
 
 
 %% --------------------------------------------------------------------
@@ -433,53 +526,121 @@ log_to_io(Log, FileName, Dir, Mibs, Start, Stop)
 
 %% -- log_convert ---
 
-log_convert(#snmp_log{id = Log}, File, Converter) ->
-    do_log_convert(Log, File, Converter);
-log_convert(Log, File, Converter) ->
-    do_log_convert(Log, File, Converter).
+log_convert(#snmp_log{id = Log}, Block, File, Converter) ->
+    do_log_convert(Log, Block, File, Converter);
+log_convert(Log, Block, File, Converter) ->
+    do_log_convert(Log, Block, File, Converter).
 
-do_log_convert(Log, File, Converter) ->
+do_log_convert(Log, Block, File, Converter) ->
     %% ?vtrace("do_log_converter -> entry with"
-    %% 	    "~n   Log:  ~p"
-    %% 	    "~n   File: ~p"
-    %% 	    "~n   disk_log:info(Log): ~p", [Log, File, disk_log:info(Log)]),
+    %% 	    "~n   Log:   ~p"
+    %% 	    "~n   Block: ~p"
+    %% 	    "~n   File:  ~p"
+    %% 	    [Log, Block, File]),
+    Verbosity  = get(verbosity), 
     {Pid, Ref} = 
 	erlang:spawn_monitor(
 	  fun() ->
-		  Result = do_log_convert2(Log, File, Converter),
+		  put(sname,     lc),
+		  put(verbosity, Verbosity), 
+		  ?vlog("begin converting", []),
+		  Result = do_log_convert2(Log, Block, File, Converter),
+		  ?vlog("convert result: ~p", [Result]),
 		  exit(Result)
 	  end),
     receive 
 	{'DOWN', Ref, process, Pid, Result} ->
 	    %% ?vtrace("do_log_converter -> received result"
-	    %% 	    "~n   Result: ~p"
-	    %% 	    "~n   disk_log:info(Log): ~p", 
-	    %% 	    [Result, disk_log:info(Log)]),
+	    %% 	    "~n   Result: ~p", [Result]),
 	    Result
     end.
     
-do_log_convert2(Log, File, Converter) ->
+do_log_convert2(Log, Block, File, Converter) ->
+
+    %% ?vtrace("do_log_converter2 -> entry with"
+    %% 	    "~n   Log:   ~p"
+    %% 	    "~n   Block: ~p"
+    %% 	    "~n   File:  ~p"
+    %% 	    "~n   disk_log:info(Log): ~p", 
+    %% 	    [Log, Block, File, disk_log:info(Log)]),
+
     %% First check if the caller process has already opened the
     %% log, because if we close an already open log we will cause
     %% a runtime error.
+
+    ?vtrace("do_log_convert2 -> entry - check if owner", []),
     case is_owner(Log) of
 	true ->
-	    Converter(Log);
+	    ?vtrace("do_log_converter2 -> convert an already owned log", []),
+	    maybe_block(Log, Block), 
+	    Res = Converter(Log),
+	    maybe_unblock(Log, Block), 
+	    Res;
 	false ->
 	    %% Not yet member of the ruling party, apply for membership...
+	    ?vtrace("do_log_converter2 -> convert log", []),
 	    case log_open(Log, File) of
 		{ok, _} ->
+		    ?vdebug("do_log_convert2 -> opened - now convert", []),
+		    maybe_block(Log, Block), 
 		    Res = Converter(Log),
+		    maybe_unblock(Log, Block), 
 		    disk_log:close(Log),
+		    ?vdebug("do_log_convert2 -> converted - done: "
+			    "~n   Result: ~p", [Res]),
 		    Res;
 		{error, {name_already_open, _}} ->
-                    Converter(Log);
+		    ?vdebug("do_log_convert2 -> "
+			    "already opened - now convert", []),
+		    maybe_block(Log, Block), 
+                    Res = Converter(Log), 
+		    maybe_unblock(Log, Block), 
+		    ?vdebug("do_log_convert2 -> converted - done: "
+			    "~n   Result: ~p", [Res]),
+		    Res;
                 {error, Reason} ->
+		    ?vinfo("do_log_converter2 -> "
+			   "failed converting log - open failed: "
+			   "~n   Reason: ~p", [Reason]),
                     {error, {Log, Reason}}
 	    end
     end.
 
 
+maybe_block(_Log, false = _Block) ->
+    %% ?vtrace("maybe_block(false) -> entry", []),
+    ok;
+maybe_block(Log, true = _Block) ->
+    %% ?vtrace("maybe_block(true) -> entry when"
+    %% 	    "~n   Log Status: ~p", [log_status(Log)]),
+    Res = disk_log:block(Log, true),
+    %% ?vtrace("maybe_block(true) -> "
+    %% 	    "~n   Log Status: ~p"
+    %% 	    "~n   Res:        ~p", [log_status(Log), Res]),
+    Res.
+
+maybe_unblock(_Log, false = _Block) ->
+    %% ?vtrace("maybe_unblock(false) -> entry", []),
+    ok;
+maybe_unblock(Log, true = _Block) ->
+    %% ?vtrace("maybe_unblock(true) -> entry when"
+    %% 	    "~n   Log Status: ~p", [log_status(Log)]),
+    Res = disk_log:unblock(Log),
+    %% ?vtrace("maybe_unblock(true) -> "
+    %% 	    "~n   Log Status: ~p"
+    %% 	    "~n   Res:        ~p", [log_status(Log), Res]),
+    Res.
+
+%% log_status(Log) ->
+%%     Info = disk_log:info(Log),
+%%     case lists:keysearch(status, 1, Info) of
+%% 	{value, {status, Status}} ->
+%% 	    Status;
+%% 	false ->
+%% 	    undefined
+%%     end.
+
+
 %% -- do_log_to_text ---
 
 do_log_to_file(Log, TextFile, Mibs, Start, Stop) ->
@@ -552,60 +713,68 @@ format_msg(Entry, Mib, Start, Stop) ->
     end.
 
 %% This is an old-style entry, that never had the sequence-number
-do_format_msg({Timestamp, Packet, {Addr, Port}}, Mib) ->
-    do_format_msg(Timestamp, Packet, Addr, Port, Mib);
+do_format_msg({Timestamp, Packet, {Ip, Port}}, Mib) ->
+    do_format_msg(Timestamp, Packet, ipPort2Str(Ip, Port), Mib);
+%% This is the format without sequence-number
+do_format_msg({Timestamp, Packet, AddrStr}, Mib) ->
+    do_format_msg(Timestamp, Packet, AddrStr, Mib);
 
+%% This is the format with sequence-number
+do_format_msg({Timestamp, SeqNo, Packet, AddrStr}, Mib)
+  when is_integer(SeqNo) ->
+    do_format_msg(Timestamp, Packet, AddrStr, Mib);
 %% This is the format without sequence-number
-do_format_msg({Timestamp, Packet, Addr, Port}, Mib) ->
-    do_format_msg(Timestamp, Packet, Addr, Port, Mib);
+do_format_msg({Timestamp, Packet, Ip, Port}, Mib) ->
+    do_format_msg(Timestamp, Packet, ipPort2Str(Ip, Port), Mib);
 
 %% This is the format with sequence-number
-do_format_msg({Timestamp, SeqNo, Packet, Addr, Port}, Mib) ->
-    do_format_msg(Timestamp, SeqNo, Packet, Addr, Port, Mib);
+do_format_msg({Timestamp, SeqNo, Packet, Ip, Port}, Mib) ->
+    do_format_msg(Timestamp, SeqNo, Packet, ipPort2Str(Ip, Port), Mib);
 
 %% This is crap...
 do_format_msg(_, _) ->
     format_tab("** unknown entry in log file\n\n", []).
 
-do_format_msg(TimeStamp, {V3Hdr, ScopedPdu}, Addr, Port, Mib) ->
+do_format_msg(TimeStamp, {V3Hdr, ScopedPdu}, AddrStr, Mib) ->
     case (catch snmp_pdus:dec_scoped_pdu(ScopedPdu)) of
 	ScopedPDU when is_record(ScopedPDU, scopedPdu) -> 
 	    Msg = #message{version = 'version-3',
 			   vsn_hdr = V3Hdr,
 			   data    = ScopedPDU},
-	    f(ts2str(TimeStamp), "", Msg, Addr, Port, Mib);
+	    f(ts2str(TimeStamp), "", Msg, AddrStr, Mib);
 	{'EXIT', Reason} ->
-	    format_tab("** error in log file at ~s from ~p:~w ~p\n\n", 
-		       [ts2str(TimeStamp), ip(Addr), Port, Reason])
+	    format_tab(
+	      "** error in log file at ~s from ~s ~p\n\n",
+	      [ts2str(TimeStamp), AddrStr, Reason])
     end;
-do_format_msg(TimeStamp, Packet, Addr, Port, Mib) ->
+do_format_msg(TimeStamp, Packet, AddrStr, Mib) ->
     case (catch snmp_pdus:dec_message(binary_to_list(Packet))) of
 	Msg when is_record(Msg, message) ->
-	    f(ts2str(TimeStamp), "", Msg, Addr, Port, Mib);
+	    f(ts2str(TimeStamp), "", Msg, AddrStr, Mib);
 	{'EXIT', Reason} ->
 	    format_tab("** error in log file ~p\n\n", [Reason])
     end.
     
-do_format_msg(TimeStamp, SeqNo, {V3Hdr, ScopedPdu}, Addr, Port, Mib) ->
+do_format_msg(TimeStamp, SeqNo, {V3Hdr, ScopedPdu}, AddrStr, Mib) ->
     case (catch snmp_pdus:dec_scoped_pdu(ScopedPdu)) of
 	ScopedPDU when is_record(ScopedPDU, scopedPdu) -> 
 	    Msg = #message{version = 'version-3',
 			   vsn_hdr = V3Hdr,
 			   data    = ScopedPDU},
-	    f(ts2str(TimeStamp), sn2str(SeqNo), Msg, Addr, Port, Mib);
+	    f(ts2str(TimeStamp), sn2str(SeqNo), Msg, AddrStr, Mib);
 	{'EXIT', Reason} ->
-	    format_tab("** error in log file at ~s from ~p:~w ~p\n\n", 
-		       [ts2str(TimeStamp), sn2str(SeqNo), 
-			ip(Addr), Port, Reason])
+	    format_tab(
+	      "** error in log file at ~s from ~s ~p\n\n",
+	      [ts2str(TimeStamp), sn2str(SeqNo), AddrStr, Reason])
     end;
-do_format_msg(TimeStamp, SeqNo, Packet, Addr, Port, Mib) ->
+do_format_msg(TimeStamp, SeqNo, Packet, AddrStr, Mib) ->
     case (catch snmp_pdus:dec_message(binary_to_list(Packet))) of
 	Msg when is_record(Msg, message) ->
-	    f(ts2str(TimeStamp), sn2str(SeqNo), Msg, Addr, Port, Mib);
+	    f(ts2str(TimeStamp), sn2str(SeqNo), Msg, AddrStr, Mib);
 	{'EXIT', Reason} ->
-	    format_tab("** error in log file ~s from ~p:~w ~p\n\n", 
-		       [ts2str(TimeStamp), sn2str(SeqNo), 
-			ip(Addr), Port, Reason])
+	    format_tab(
+	      "** error in log file ~s from ~s ~p\n\n",
+	      [ts2str(TimeStamp), sn2str(SeqNo), AddrStr, Reason])
     end.
     
     
@@ -649,44 +818,71 @@ do_format_msg(TimeStamp, SeqNo, Packet, Addr, Port, Mib) ->
 
 f(TimeStamp, SeqNo, 
   #message{version = Vsn, vsn_hdr = VsnHdr, data = Data}, 
-  Addr, Port, Mib) ->
+  AddrStr, Mib) ->
     Str    = format_pdu(Data, Mib),
     HdrStr = format_header(Vsn, VsnHdr),
-    case get_type(Data) of
-        trappdu ->
-            f_trap(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-        'snmpv2-trap' ->
-            f_trap(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-        'inform-request' ->
-            f_inform(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-        'get-response' ->
-            f_response(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-        report ->
-            f_report(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-        _ ->
-            f_request(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port)
-    end.
-
-f_request(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-    format_tab("request ~s:~w - ~s [~s]~s ~w\n~s", 
-	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
-
-f_response(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-    format_tab("response ~s:~w - ~s [~s]~s ~w\n~s", 
-	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
-
-f_report(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-    format_tab("report ~s:~w - ~s [~s]~s ~w\n~s", 
-	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
-
-f_trap(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-    format_tab("trap ~s:~w - ~s [~s]~s ~w\n~s", 
-	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
-
-f_inform(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-    format_tab("inform ~s:~w - ~s [~s]~s ~w\n~s", 
-	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
-
+    Class =
+	case get_type(Data) of
+	    trappdu ->
+		trap;
+	    'snmpv2-trap' ->
+		trap;
+	    'inform-request' ->
+		inform;
+	    'get-response' ->
+		response;
+	    report ->
+		report;
+	    _ ->
+		request
+	end,
+    format_tab(
+      "~w ~s - ~s [~s]~s ~w\n~s",
+      [Class, AddrStr, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
+
+%% f(TimeStamp, SeqNo,
+%%   #message{version = Vsn, vsn_hdr = VsnHdr, data = Data},
+%%   Addr, Port, Mib) ->
+%%     Str    = format_pdu(Data, Mib),
+%%     HdrStr = format_header(Vsn, VsnHdr),
+%%     case get_type(Data) of
+%%         trappdu ->
+%%             f_trap(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
+%%         'snmpv2-trap' ->
+%%             f_trap(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
+%%         'inform-request' ->
+%%             f_inform(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
+%%         'get-response' ->
+%%             f_response(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
+%%         report ->
+%%             f_report(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
+%%         _ ->
+%%             f_request(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port)
+%%     end.
+
+%% f_request(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
+%%     format_tab("request ~s:~w - ~s [~s]~s ~w\n~s",
+%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
+
+%% f_response(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
+%%     format_tab("response ~s:~w - ~s [~s]~s ~w\n~s",
+%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
+
+%% f_report(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
+%%     format_tab("report ~s:~w - ~s [~s]~s ~w\n~s",
+%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
+
+%% f_trap(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
+%%     format_tab("trap ~s:~w - ~s [~s]~s ~w\n~s",
+%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
+
+%% f_inform(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
+%%     format_tab("inform ~s:~w - ~s [~s]~s ~w\n~s",
+%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
+
+ipPort2Str(Ip, Port) ->
+    snmp_conf:mk_addr_string({Ip, Port}).
+    %% io_lib:format("~s:~w", [ip(Ip), Port]).
 
 %% Convert a timestamp 2-tupple to a printable string
 %%
@@ -787,8 +983,10 @@ get_type(#pdu{type = Type}) ->
     Type.
 
 
-ip({A,B,C,D}) ->
-    io_lib:format("~w.~w.~w.~w", [A,B,C,D]).
+%% ip(Domain, Addr) ->
+%%     snmp_conf:mk_addr_string(Domain, Addr).
+%% ip({A,B,C,D}) ->
+%%     io_lib:format("~w.~w.~w.~w", [A,B,C,D]).
 
 
 
diff --git a/lib/snmp/src/misc/snmp_mini_mib.erl b/lib/snmp/src/misc/snmp_mini_mib.erl
index d80270d5c2..92de339001 100644
--- a/lib/snmp/src/misc/snmp_mini_mib.erl
+++ b/lib/snmp/src/misc/snmp_mini_mib.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/misc/snmp_misc.erl b/lib/snmp/src/misc/snmp_misc.erl
index c36cee2a53..1f847b7a29 100644
--- a/lib/snmp/src/misc/snmp_misc.erl
+++ b/lib/snmp/src/misc/snmp_misc.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2015. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -101,21 +102,14 @@ sleep(Time) ->
 %% Returns time in ms = sec/1000
 % now() -> now(ms).
 now(ms) ->
-    Now = erlang:now(),
-    element(1,Now)*1000000000+
-	element(2,Now)*1000+
-	(element(3,Now) div 1000);
+    erlang:monotonic_time(milli_seconds);
+
 %% Returns time in cs = sec/100
 now(cs) ->
-    Now = erlang:now(),
-    element(1,Now)*100000000+
-        element(2,Now)*100+
-	(element(3,Now) div 10000);
+    erlang:monotonic_time(100);
+
 now(sec) ->
-    Now = erlang:now(),
-    element(1,Now)*1000000+
-        element(2,Now)+
-	(element(3,Now) div 1000000).
+    erlang:monotonic_time(seconds).
     
 
 is_crypto_supported(Alg) ->
@@ -479,7 +473,3 @@ format_val('OBJECT IDENTIFIER', _, Val, MiniMib) ->
     io_lib:format("~w", [NVal]);
 format_val(_, _, Val, _MiniMib) ->
     io_lib:format("~p", [Val]).
-    
-
-
-
diff --git a/lib/snmp/src/misc/snmp_note_store.erl b/lib/snmp/src/misc/snmp_note_store.erl
index 608fdcd9ca..606dd8ce4f 100644
--- a/lib/snmp/src/misc/snmp_note_store.erl
+++ b/lib/snmp/src/misc/snmp_note_store.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2011. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/misc/snmp_pdus.erl b/lib/snmp/src/misc/snmp_pdus.erl
index 15156f7467..93f06749fd 100644
--- a/lib/snmp/src/misc/snmp_pdus.erl
+++ b/lib/snmp/src/misc/snmp_pdus.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
@@ -174,7 +175,7 @@ dec_pdu_tag(168) ->
 dec_pdu([164 | Bytes]) ->      % It's a trap
     Bytes2 = get_data_bytes(Bytes),
     {Enterprise, Rest1} = dec_oid_tag(Bytes2),
-    {{'IpAddress', AgentAddr}, Rest2} = dec_value(Rest1),
+    {{'IpAddress', [_, _, _, _] = AgentAddr}, Rest2} = dec_value(Rest1),
     {GenericTrap, Rest3} = dec_int_tag(Rest2),
     {SpecificTrap, Rest4} = dec_int_tag(Rest3),
     {{'TimeTicks', TimeStamp}, VBBytes} = dec_value(Rest4),
@@ -664,7 +665,9 @@ enc_value('BITS', Val) ->
     enc_oct_str_tag(bits_to_str(Val));
 enc_value('OBJECT IDENTIFIER', Val) ->
     enc_oid_tag(Val);
-enc_value('IpAddress', Val) ->
+enc_value('IpAddress', {A, B, C, D}) ->
+    enc_value('IpAddress', [A,B,C,D]);
+enc_value('IpAddress', Val) when is_list(Val) ->
     Bytes2 = enc_oct_str_notag(Val),
     Len2 = elength(length(Bytes2)),
     lists:append([64 | Len2],Bytes2);
diff --git a/lib/snmp/src/misc/snmp_usm.erl b/lib/snmp/src/misc/snmp_usm.erl
index 67e3476816..bae6bdec72 100644
--- a/lib/snmp/src/misc/snmp_usm.erl
+++ b/lib/snmp/src/misc/snmp_usm.erl
@@ -1,21 +1,24 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2016. All Rights Reserved.
 %%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
 %%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %%
 %% %CopyrightEnd%
 %% 
+%% AES: RFC 3826
+%% 
 
 -module(snmp_usm).
 
@@ -24,7 +27,7 @@
 -export([passwd2localized_key/3, localize_key/3]).
 -export([auth_in/4, auth_out/4, set_msg_auth_params/3]).
 -export([des_encrypt/3, des_decrypt/3]).
--export([aes_encrypt/3, aes_decrypt/5]).
+-export([aes_encrypt/5, aes_decrypt/5]).
 
 
 -define(SNMP_USE_V3, true).
@@ -42,6 +45,9 @@
 
 -define(i32(Int), (Int bsr 24) band 255, (Int bsr 16) band 255, (Int bsr 8) band 255, Int band 255).
 
+-define(BLOCK_CIPHER_AES, aes_cfb128).
+-define(BLOCK_CIPHER_DES, des_cbc).
+
 
 %%-----------------------------------------------------------------
 %% Func: passwd2localized_key/3
@@ -210,7 +216,8 @@ des_encrypt(PrivKey, Data, SaltFun) ->
     IV = list_to_binary(snmp_misc:str_xor(PreIV, Salt)),
     TailLen = (8 - (length(Data) rem 8)) rem 8,
     Tail = mk_tail(TailLen),
-    EncData = crypto:block_encrypt(des_cbc, DesKey, IV, [Data,Tail]),
+    EncData = crypto:block_encrypt(?BLOCK_CIPHER_DES, 
+				   DesKey, IV, [Data,Tail]),
     {ok, binary_to_list(EncData), Salt}.
 
 des_decrypt(PrivKey, MsgPrivParams, EncData) 
@@ -224,7 +231,8 @@ des_decrypt(PrivKey, MsgPrivParams, EncData)
     Salt = MsgPrivParams,
     IV = list_to_binary(snmp_misc:str_xor(PreIV, Salt)),
     %% Whatabout errors here???  E.g. not a mulitple of 8!
-    Data = binary_to_list(crypto:block_decrypt(des_cbc, DesKey, IV, EncData)),
+    Data = binary_to_list(crypto:block_decrypt(?BLOCK_CIPHER_DES, 
+					       DesKey, IV, EncData)),
     Data2 = snmp_pdus:strip_encrypted_scoped_pdu_data(Data),
     {ok, Data2};
 des_decrypt(PrivKey, BadMsgPrivParams, EncData) ->
@@ -236,13 +244,12 @@ des_decrypt(PrivKey, BadMsgPrivParams, EncData) ->
     throw({error, {bad_msgPrivParams, PrivKey, BadMsgPrivParams, EncData}}).
     
 
-aes_encrypt(PrivKey, Data, SaltFun) ->
+aes_encrypt(PrivKey, Data, SaltFun, EngineBoots, EngineTime) ->
     AesKey = PrivKey,
     Salt = SaltFun(),
-    EngineBoots = snmp_framework_mib:get_engine_boots(),
-    EngineTime = snmp_framework_mib:get_engine_time(),
     IV = list_to_binary([?i32(EngineBoots), ?i32(EngineTime) | Salt]),
-    EncData = crypto:block_encrypt(aes_cbf128, AesKey, IV, Data),
+    EncData = crypto:block_encrypt(?BLOCK_CIPHER_AES, 
+				   AesKey, IV, Data),
     {ok, binary_to_list(EncData), Salt}.
 
 aes_decrypt(PrivKey, MsgPrivParams, EncData, EngineBoots, EngineTime)
@@ -251,7 +258,8 @@ aes_decrypt(PrivKey, MsgPrivParams, EncData, EngineBoots, EngineTime)
     Salt = MsgPrivParams,
     IV = list_to_binary([?i32(EngineBoots), ?i32(EngineTime) | Salt]),
     %% Whatabout errors here???  E.g. not a mulitple of 8!
-    Data = binary_to_list(crypto:block_decrypt(aes_cbf128, AesKey, IV, EncData)),
+    Data = binary_to_list(crypto:block_decrypt(?BLOCK_CIPHER_AES, 
+					       AesKey, IV, EncData)),
     Data2 = snmp_pdus:strip_encrypted_scoped_pdu_data(Data),
     {ok, Data2}.
 
diff --git a/lib/snmp/src/misc/snmp_verbosity.erl b/lib/snmp/src/misc/snmp_verbosity.erl
index df5986b7bc..edfb52a474 100644
--- a/lib/snmp/src/misc/snmp_verbosity.erl
+++ b/lib/snmp/src/misc/snmp_verbosity.erl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2000-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2015. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
@@ -69,7 +70,7 @@ print2(_Verbosity,Format,Arguments) ->
 
 
 timestamp() ->
-    format_timestamp(now()).
+    format_timestamp(os:timestamp()).
 
 format_timestamp({_N1, _N2, N3} = Now) ->
     {Date, Time}   = calendar:now_to_datetime(Now),
@@ -148,6 +149,8 @@ image_of_sname(mnifl)     -> "M-NET-IF-LOGGER";
 image_of_sname(mnifw)     -> io_lib:format("M-NET-IF-worker(~p)", [self()]);
 image_of_sname(mconf)     -> "M-CONF";
 
+image_of_sname(lc)        -> io_lib:format("LOG-CONVERTER(~p)", [self()]);
+
 image_of_sname(mgr)       -> "MGR";
 image_of_sname(mgr_misc)  -> "MGR_MISC";
 
@@ -160,4 +163,3 @@ validate(log)   -> log;
 validate(debug) -> debug;
 validate(trace) -> trace;
 validate(_)     -> silence.
-
diff --git a/lib/snmp/src/misc/snmp_verbosity.hrl b/lib/snmp/src/misc/snmp_verbosity.hrl
index 934d32831f..c79f4c3e88 100644
--- a/lib/snmp/src/misc/snmp_verbosity.hrl
+++ b/lib/snmp/src/misc/snmp_verbosity.hrl
@@ -1,18 +1,19 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2000-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2016. All Rights Reserved.
 %% 
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%% 
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%%     http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
 %% 
 %% %CopyrightEnd%
 %% 
diff --git a/lib/snmp/src/subdirs.mk b/lib/snmp/src/subdirs.mk
index 1cbcd04b54..5f45fd2586 100644
--- a/lib/snmp/src/subdirs.mk
+++ b/lib/snmp/src/subdirs.mk
@@ -2,18 +2,19 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 2003-2009. All Rights Reserved.
+# Copyright Ericsson AB 2003-2016. All Rights Reserved.
 # 
-# The contents of this file are subject to the Erlang Public License,
-# Version 1.1, (the "License"); you may not use this file except in
-# compliance with the License. You should have received a copy of the
-# Erlang Public License along with this software. If not, it can be
-# retrieved online at http://www.erlang.org/.
-# 
-# Software distributed under the License is distributed on an "AS IS"
-# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-# the License for the specific language governing rights and limitations
-# under the License.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 # 
 # %CopyrightEnd%