Merge branch 'maint'

Conflicts:
	OTP_VERSION

50 files changed, 5740 insertions, 3292 deletions

diff --git a/lib/snmp/doc/src/notes.xml b/lib/snmp/doc/src/notes.xml
index 06674095f2..15efd47a1c 100644
--- a/lib/snmp/doc/src/notes.xml
+++ b/lib/snmp/doc/src/notes.xml
@@ -33,7 +33,29 @@
   </header>
 
 
-  <section><title>SNMP 4.25.1</title>
+  <section><title>SNMP 5.0</title>
+
+    <section><title>Improvements and New Features</title>
+      <list>
+        <item>
+          <p>
+	    SNMP has been improved to handle IPv6. The agent can
+	    handle dual stack IPv4 + IPv6, but not yet the manager.
+	    The documentation also still lags behind... If you do
+	    such advanced stuff like writing a custom net_if module,
+	    the interface for it has changed, but other than that
+	    SNMP is backwards compatible.</p>
+          <p>
+	    *** POTENTIAL INCOMPATIBILITY ***</p>
+          <p>
+	    Own Id: OTP-12020 Aux Id: OTP-11518 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
+<section><title>SNMP 4.25.1</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
       <list>
diff --git a/lib/snmp/src/agent/snmp_community_mib.erl b/lib/snmp/src/agent/snmp_community_mib.erl
index 7bdd500727..4546c343b7 100644
--- a/lib/snmp/src/agent/snmp_community_mib.erl
+++ b/lib/snmp/src/agent/snmp_community_mib.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2014. 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
@@ -31,6 +31,7 @@
 -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 +130,11 @@ 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 +194,7 @@ 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 +203,12 @@ 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 +246,10 @@ 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 +257,9 @@ 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 +516,12 @@ 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 +530,11 @@ 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 +544,49 @@ 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 +622,7 @@ 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..9d3f7ef5e7 100644
--- a/lib/snmp/src/agent/snmp_framework_mib.erl
+++ b/lib/snmp/src/agent/snmp_framework_mib.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2014. 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
@@ -41,6 +41,7 @@
 -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 +52,7 @@
 	 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 +116,46 @@ 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 +189,44 @@ 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) ->
+    CheckedTransports =
+	[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, Address} = 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 +237,14 @@ 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 +417,14 @@ 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..3195ca2500 100644
--- a/lib/snmp/src/agent/snmp_generic.erl
+++ b/lib/snmp/src/agent/snmp_generic.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -414,7 +414,12 @@ 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 +436,12 @@ 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 +721,19 @@ 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_notification_mib.erl b/lib/snmp/src/agent/snmp_notification_mib.erl
index 37e09f5d3e..31c7735226 100644
--- a/lib/snmp/src/agent/snmp_notification_mib.erl
+++ b/lib/snmp/src/agent/snmp_notification_mib.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1998-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2014. 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
@@ -106,17 +106,19 @@ 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_standard_mib.erl b/lib/snmp/src/agent/snmp_standard_mib.erl
index 766b75022b..aace3fd413 100644
--- a/lib/snmp/src/agent/snmp_standard_mib.erl
+++ b/lib/snmp/src/agent/snmp_standard_mib.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -152,16 +152,19 @@ 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) ->
diff --git a/lib/snmp/src/agent/snmp_target_mib.erl b/lib/snmp/src/agent/snmp_target_mib.erl
index b01d536caa..e916f17d6a 100644
--- a/lib/snmp/src/agent/snmp_target_mib.erl
+++ b/lib/snmp/src/agent/snmp_target_mib.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1998-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2014. 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
@@ -133,18 +133,22 @@ 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 +158,154 @@ 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}) % 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);
+%% 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);
+%% 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(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) 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 check_address(Domain, Mask)
+    catch
+	{error, {bad_address, Info}} ->
+	    error({bad_mask, Info})
+    end.
 
 
 %%-----------------------------------------------------------------
@@ -604,6 +683,20 @@ 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 +711,8 @@ 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),
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..69dce337ba 100644
--- a/lib/snmp/src/agent/snmp_user_based_sm_mib.erl
+++ b/lib/snmp/src/agent/snmp_user_based_sm_mib.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2014. 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
@@ -137,18 +137,20 @@ 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,
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 c0177b1cea..722bd7ac5b 100644
--- a/lib/snmp/src/agent/snmp_view_based_acm_mib.erl
+++ b/lib/snmp/src/agent/snmp_view_based_acm_mib.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2014. 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
@@ -123,15 +123,18 @@ 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.
 
 %%-----------------------------------------------------------------
diff --git a/lib/snmp/src/agent/snmpa_agent.erl b/lib/snmp/src/agent/snmpa_agent.erl
index 9bed6e554e..6d3f1cca4a 100644
--- a/lib/snmp/src/agent/snmpa_agent.erl
+++ b/lib/snmp/src/agent/snmpa_agent.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -2512,10 +2512,19 @@ 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_conf.erl b/lib/snmp/src/agent/snmpa_conf.erl
index c17a6abbd7..b4d32dc928 100644
--- a/lib/snmp/src/agent/snmpa_conf.erl
+++ b/lib/snmp/src/agent/snmpa_conf.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2014. 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
@@ -108,36 +108,25 @@ 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 +140,10 @@ 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 +184,27 @@ 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 +257,29 @@ 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 +288,17 @@ 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 +325,29 @@ 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 +381,35 @@ 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, 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, 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 +438,29 @@ 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 +473,36 @@ 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, 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})
+  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, 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 +546,27 @@ 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 +611,27 @@ 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 +700,27 @@ 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 +732,12 @@ 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 +803,27 @@ 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 +835,60 @@ 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_local_db.erl b/lib/snmp/src/agent/snmpa_local_db.erl
index f991244287..292c370d51 100644
--- a/lib/snmp/src/agent/snmpa_local_db.erl
+++ b/lib/snmp/src/agent/snmpa_local_db.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -1011,6 +1011,10 @@ 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_mpd.erl b/lib/snmp/src/agent/snmpa_mpd.erl
index 11ae806866..642b1f7fc5 100644
--- a/lib/snmp/src/agent/snmpa_mpd.erl
+++ b/lib/snmp/src/agent/snmpa_mpd.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2014. 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
@@ -20,7 +20,7 @@
 
 -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, 
@@ -113,22 +113,30 @@ 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 +144,17 @@ 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 +162,9 @@ 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 +191,32 @@ 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 +243,7 @@ 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 +265,7 @@ 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 +275,7 @@ 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);
@@ -999,7 +1021,7 @@ 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 +1063,7 @@ 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 +1103,22 @@ 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 +1207,9 @@ 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 +1316,9 @@ 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..840d56d563 100644
--- a/lib/snmp/src/agent/snmpa_net_if.erl
+++ b/lib/snmp/src/agent/snmpa_net_if.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -35,18 +35,27 @@
 -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 +113,9 @@ 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 +134,22 @@ 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 +167,6 @@ 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 +176,45 @@ 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 +270,84 @@ 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(IpPort, [{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(IpPort, [{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 +355,78 @@ 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 +452,34 @@ 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 +491,6 @@ 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 +514,50 @@ 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 +565,321 @@ 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) ->
+handle_recv(
+  #state{mpd_state  = MpdState, note_store = NS, log = Log} = S,
+  #transport{socket = Socket} = Transport,
+  From, 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
+    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 +887,116 @@ 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, []).
+maybe_handle_send_pdu(
+  #state{filter = FilterMod, transports = Transports} = S,
+  Vsn, Pdu, MsgData, TDomAddrSecs, From) ->
 
-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) ->
+    ?vtrace("maybe_handle_send_pdu -> entry with~n"
+	    "   FilterMod: ~p~n"
+	    "   TDomAddrSecs: ~p", [FilterMod, TDomAddrSecs]),
 
-    ?vtrace("maybe_handle_send_pdu -> entry with"
-	    "~n   FilterMod: ~p"
-	    "~n   To0:       ~p", [FilterMod, To0]),
-
-    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 +1005,173 @@ 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}.
 
+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, #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).
-
-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 +1221,75 @@ 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) 
@@ -1113,37 +1446,39 @@ 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 +1538,9 @@ 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 +1565,14 @@ 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
diff --git a/lib/snmp/src/agent/snmpa_net_if_filter.erl b/lib/snmp/src/agent/snmpa_net_if_filter.erl
index 989f7c95b3..dd77b143d0 100644
--- a/lib/snmp/src/agent/snmpa_net_if_filter.erl
+++ b/lib/snmp/src/agent/snmpa_net_if_filter.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2007-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2014. 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
@@ -18,35 +18,49 @@
 %%
 -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_filter.erl b/lib/snmp/src/agent/snmpa_network_interface_filter.erl
index 6fa131beee..90aa54a271 100644
--- a/lib/snmp/src/agent/snmpa_network_interface_filter.erl
+++ b/lib/snmp/src/agent/snmpa_network_interface_filter.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2007-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2007-2014. 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
@@ -23,7 +23,7 @@
 
 
 behaviour_info(callbacks) ->
-    [{accept_recv,     2}, 
+    [{accept_recv,     2},
      {accept_send,     2},
      {accept_recv_pdu, 3},
      {accept_send_pdu, 2}];
@@ -31,20 +31,21 @@ 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_trap.erl b/lib/snmp/src/agent/snmpa_trap.erl
index b9a2496341..a79b150f57 100644
--- a/lib/snmp/src/agent/snmpa_trap.erl
+++ b/lib/snmp/src/agent/snmpa_trap.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -270,12 +270,13 @@ 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 +285,7 @@ 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 +293,6 @@ 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 +369,7 @@ 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 +790,19 @@ 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 +819,38 @@ 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 +1066,7 @@ 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 +1093,90 @@ 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},
-    Port = P1 bsl 8 + P2,
-    {Addr, Port};
-transform_taddr({?transportDomainUdpIpv4, [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({?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, P1, P2]) ->
+    Ip = {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},
+    {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({{?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/app/snmp.appup.src b/lib/snmp/src/app/snmp.appup.src
index babc33e6a5..ae79e3c1d1 100644
--- a/lib/snmp/src/app/snmp.appup.src
+++ b/lib/snmp/src/app/snmp.appup.src
@@ -28,6 +28,8 @@
 %% {update, snmpa_local_db, soft, soft_purge, soft_purge, []}
 %% {add_module,  snmpm_net_if_mt}
  [
+  {"4.25.1", [{restart_application, snmp}]},
+  {"4.25.0.1", [{restart_application, snmp}]},
   {"4.25",   [{restart_application, snmp}]}, 
   {"4.24.2", [{restart_application, snmp}]}, 
   {"4.24.1", [{restart_application, snmp}]}, 
@@ -40,6 +42,8 @@
 %% {remove, {snmpm_net_if_mt, soft_purge, soft_purge}}
 
  [
+  {"4.25.1", [{restart_application, snmp}]},
+  {"4.25.0.1", [{restart_application, snmp}]},
   {"4.25",   [{restart_application, snmp}]}, 
   {"4.24.2", [{restart_application, snmp}]}, 
   {"4.24.1", [{restart_application, snmp}]}, 
diff --git a/lib/snmp/src/manager/snmpm.erl b/lib/snmp/src/manager/snmpm.erl
index c97b635fc6..8976322c4e 100644
--- a/lib/snmp/src/manager/snmpm.erl
+++ b/lib/snmp/src/manager/snmpm.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -379,21 +379,33 @@ 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);
@@ -402,8 +414,8 @@ 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 ->
@@ -1264,14 +1276,17 @@ 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
@@ -1287,5 +1302,5 @@ 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_conf.erl b/lib/snmp/src/manager/snmpm_conf.erl
index 5e2d9fdbf6..888f19aec6 100644
--- a/lib/snmp/src/manager/snmpm_conf.erl
+++ b/lib/snmp/src/manager/snmpm_conf.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2014. 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
@@ -78,43 +78,26 @@ 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).
-    
+  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) ->
-    Verify = fun(Entry) -> verify_manager_conf_entry(Entry) end,
-    read_config_file(Dir, ?MANAGER_CONF_FILE, Verify).
+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);
 write_manager_conf(Fd, Hdr, Conf) ->
@@ -127,14 +110,15 @@ 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}) ->
-    io:format(Fd, "{~w, ~w}.~n", [Tag, Val]);
-do_write_manager_conf(Fd, {port = Tag, Val} ) ->
+do_write_manager_conf(Fd, {Tag, Val})
+  when Tag =:= domain;
+       Tag =:= address;
+       Tag =:= port;
+       Tag =:= max_message_size ->
     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}).
 
@@ -167,36 +151,29 @@ 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);
@@ -239,36 +216,29 @@ 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);
@@ -282,13 +252,15 @@ 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}).
 
@@ -314,37 +286,30 @@ 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);
@@ -358,41 +323,49 @@ 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).
-
-append_config_file(Dir, File, Verify, Write) ->
-    snmp_config:append_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).
 
-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 2101ad46e1..013fefa4e2 100644
--- a/lib/snmp/src/manager/snmpm_config.erl
+++ b/lib/snmp/src/manager/snmpm_config.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -103,8 +103,10 @@
 	 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 +167,7 @@
 %%%-------------------------------------------------------------------
 
 default_transport_domain() ->
-    transportDomainUdpIpv4.
+    snmpUDPDomain.
 
 
 start_link(Opts) -> 
@@ -190,7 +192,11 @@ 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 +207,19 @@ 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 +286,10 @@ 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 +297,35 @@ 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 +359,17 @@ 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 +395,43 @@ 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).
 
@@ -444,20 +449,46 @@ agent_info(TargetName, Item) ->
 	[] ->
 	    {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) ->
+    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 +496,19 @@ 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 +518,6 @@ 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 +752,7 @@ 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 +1085,11 @@ 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,      []),
@@ -1506,7 +1522,9 @@ 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;
@@ -1629,181 +1647,136 @@ 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, noAuthPriv},     % SecLevel
+	 {community, "all-rights"}],  % Community
+    do_update_agent_info(default_agent, AgentDefaultConfig).
+
+%%     %% 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.
+
+%% read_agents_config_file(Dir) ->
+%%     Verify = fun check_agent_config2/1,
+%%     case read_file(Dir, "agents.conf", Verify, []) of
+%% 	{ok, Conf} ->
+%% 	    Conf;
+%% 	Error ->
+%% 	    ?vlog("agent config error: ~p", [Error]),
+%% 	    throw(Error)
+%%     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)
+%%     end.
 
 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, Ip, Port,
+   EngineId, Timeout, MaxMessageSize,
+   Version, SecModel, SecName, SecLevel}) ->
+    Domain = default_transport_domain(),
+    Addr = fix_address(Domain, {Ip, Port}),
+    check_agent_config(
+      UserId, TargetName, Community, Domain, Addr,
+      EngineId, Timeout, MaxMessageSize,
+      Version, SecModel, SecName, SecLevel);
+check_agent_config(
+  {UserId, TargetName, Community, Domain, Ip, Port,
+   EngineId, Timeout, MaxMessageSize,
+   Version, SecModel, SecName, SecLevel}) ->
+    check_agent_config(
+      UserId, TargetName, Community, Domain, {Ip, Port},
+      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,         Addr},
 	 {community,        Comm}, 
 	 {engine_id,        EngineId},
 	 {timeout,          Timeout},
@@ -1813,40 +1786,186 @@ 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;
-verify_agent2([Bad|_], _VerifiedConf) ->
-    {error, {bad_agent_config, Bad}}.
+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
+		TD = default_transport_domain(),
+		{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_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) ->
+%%     Verify = fun check_user_config/1,
+%%     case read_file(Dir, "users.conf", Verify, []) of
+%% 	{ok, Conf} ->
+%% 	    Conf;
+%% 	Error ->
+%% 	    ?vlog("failure reading users config file: ~n   ~p", [Error]),
+%% 	    throw(Error)
+%%     end.
+
 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"
@@ -1864,21 +1983,18 @@ 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) ->
@@ -1904,7 +2020,7 @@ 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}) 
@@ -1917,15 +2033,24 @@ 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)
@@ -1936,27 +2061,32 @@ 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) ->
+%%     Verify = fun check_usm_user_config/1,
+%%     case read_file(Dir, "usm.conf", Verify, []) of
+%% 	{ok, Conf} ->
+%% 	    Conf;
+%% 	Error ->
+%% 	    throw(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, 
@@ -2138,20 +2268,61 @@ is_crypto_supported(Func) ->
     snmp_misc:is_crypto_supported(Func). 
  
 
+%% read_manager_config_file(Dir) ->
+%%     Verify = fun check_manager_config/1,
+%%     case read_file(Dir, "manager.conf", Verify) 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...
+%% 	    verify_mandatory(Conf, [port,engine_id,max_message_size]),
+%% 	    ensure_config(default_manager_config(), Conf);
+%% %%	    check_mandatory_manager_config(Conf),
+%% %%	    ensure_manager_config(Conf);
+%% 	Error ->
+%% 	    throw(Error)
+%%     end.
+
 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)
+    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_mandatory(Conf, [port,engine_id,max_message_size]),
+    default_manager_config(Conf).
+
+default_manager_config(Conf) ->
+    %% Ensure address of right family
+    case lists:keyfind(address, 1, Conf) of
+	false ->
+	    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} ->
+		    [{address, Address} | Conf];
+		{error, _Reason} ->
+		    ?d("default_manager_config -> "
+		       "failed getting ~w address for ~s:~n"
+		       "   _Reason: ~p", [Family, HostName, _Reason]),
+		    Conf
+	    end;
+	_ ->
+	    Conf
     end.
 
 default_manager_config() ->
@@ -2164,46 +2335,66 @@ default_manager_config() ->
 	       "~n   _Reason: ~p", [_Reason]),
 	    []
     end.
-    
-check_manager_config({address, Addr}) ->
-    snmp_conf:check_ip(Addr);
+
+order_manager_config(EntryA, EntryB) ->
+    snmp_conf:keyorder(1, EntryA, EntryB, [domain]).
+
+check_manager_config({domain, D}, _Domain) ->
+    {snmp_conf:check_domain(D), D};
+check_manager_config({address = Tag, Ip}, D) ->
+    Domain =
+	case D of
+	    undefined ->
+		default_transport_domain();
+	    _ ->
+		D
+	end,
+    {case snmp_conf:check_ip(Domain, Ip) of
+	 ok ->
+	     ok;
+	 {ok, FixedIp} ->
+	     {ok, {Tag, FixedIp}}
+     end, Domain};
+check_manager_config(Entry, Domain) ->
+    {check_manager_config(Entry), Domain}.
+
 check_manager_config({port, Port}) ->
-    snmp_conf:check_integer(Port, {gt, 0});
+    snmp_conf:check_port(Port);
 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}}.
+    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) ->
+%%     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.
+%% 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) ->
+%%     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(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;
@@ -2216,46 +2407,102 @@ ensure_manager_config(Confs, [{Key,_} = DefKeyVal|Defs]) ->
 % 	    ensure_manager_config(Confs, Defs, [Conf|Acc])
 %     end.
 			      
-
-
-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}}
-    end.
+	    erlang:raise(throw, Error, erlang:get_stacktrace())
+    end.
+
+
+
+
+
+
+%% read_file(Dir, FileName, Verify, Default) ->
+%%     File = filename:join(Dir, FileName),
+%%     case file:read_file_info(File) of
+%%         {ok, _} ->
+%% 	    read_file(File, Verify);
+%% 	{error, Reason} ->
+%% 	    ?vlog("failed reading config from ~s: ~p", [FileName, Reason]),
+%% 	    {ok, Default}
+%%     end.
+
+%% read_file(Dir, FileName, Verify) ->
+%%     File = filename:join(Dir, FileName),
+%%     case file:read_file_info(File) of
+%%         {ok, _} ->
+%% 	    read_file(File, Verify);
+%%         {error, Reason} ->
+%% 	    error_msg("failed reading config from ~s: ~p", [FileName, Reason]),
+%% 	    {error, {failed_reading, FileName, Reason}}
+%%     end.
+
+%% read_file(File, Verify) ->
+%%     Check = fun (Config, State) -> {Verify(Config), State} end,
+%%     try snmp_conf:read(File, Check) of
+%% 	Conf ->
+%% 	    ?vtrace("read_file -> read ok"
+%% 		    "~n   Conf: ~p", [Conf]),
+%% 	    {ok, Conf}
+%%     catch
+%% 	Error ->
+%% 	    ?vtrace("read_file -> read failed:"
+%% 		    "~n   Error: ~p", [Error]),
+%% 	    Error
+%%     end.
+
+%% XXX remove
+
+%% 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} ->
+%% 	    ?vlog("failed reading config from ~s: ~p", [FileName, Reason]),
+%% 	    {ok, 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} ->
+%% 	    error_msg("failed reading config from ~s: ~p", [FileName, Reason]),
+%% 	    {error, {failed_reading, FileName, Reason}}
+%%     end.
 
-do_read(File, Check) ->
-    {ok, snmp_conf:read(File, Check)}.
+%% do_read(File, Check) ->
+%%     {ok, snmp_conf:read(File, Check)}.
 
 
 %%--------------------------------------------------------------------
@@ -2684,30 +2931,50 @@ 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}}
@@ -2729,7 +2996,7 @@ 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"
@@ -2738,7 +3005,7 @@ 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, '_'}),
@@ -2762,9 +3029,9 @@ 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;
@@ -2790,21 +3057,26 @@ 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) ->
@@ -2816,6 +3088,9 @@ 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})
@@ -2997,109 +3272,42 @@ 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.
+
 
 
 %%%-------------------------------------------------------------------
@@ -3257,31 +3465,14 @@ 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) ->
@@ -3389,6 +3580,6 @@ error_msg(F, A) ->
 %% 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_mpd.erl b/lib/snmp/src/manager/snmpm_mpd.erl
index 953c94ab54..f8a7441c0a 100644
--- a/lib/snmp/src/manager/snmpm_mpd.erl
+++ b/lib/snmp/src/manager/snmpm_mpd.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -21,7 +21,7 @@
 
 -export([init/1, 
 
-	 process_msg/7,
+	 process_msg/7, process_msg/6,
 	 generate_msg/5, generate_response_msg/4,
 
 	 next_msg_id/0, 
@@ -92,8 +92,10 @@ 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 +104,17 @@ 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 +124,7 @@ 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 +150,27 @@ 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 +210,12 @@ 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 +348,8 @@ 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 +862,23 @@ 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() ->
@@ -888,9 +893,12 @@ 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).
 
+%% 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} ->
diff --git a/lib/snmp/src/manager/snmpm_net_if.erl b/lib/snmp/src/manager/snmpm_net_if.erl
index 4d6bd9aa33..860b0b83dd 100644
--- a/lib/snmp/src/manager/snmpm_net_if.erl
+++ b/lib/snmp/src/manager/snmpm_net_if.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2011. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -27,9 +27,9 @@
 -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 +55,12 @@
 %% -define(VMODULE,"NET_IF").
 -include("snmp_verbosity.hrl").
 
--record(state, 
+-record(state,
 	{
 	  server,
 	  note_store,
-	  sock, 
+	  domain,
+	  sock,
 	  mpd_state,
 	  log,
 	  irb = auto, % auto | {user, integer()}
@@ -99,30 +100,32 @@ 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, 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, 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) 
+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).
@@ -199,7 +202,14 @@ do_init(Server, NoteStore) ->
     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),
+    Domain =
+	case snmpm_config:system_info(domain) of
+	    {ok, D} ->
+		D;
+	    _ ->
+		snmpm_config:default_transport_domain()
+	end,
+    {ok, Sock} = do_open_port(Port, SndBuf, RecBuf, Domain, BindTo, NoReuse),
 
     %% Flow control --
     FilterOpts = get_opt(Opts, filter, []),
@@ -217,6 +227,7 @@ do_init(Server, NoteStore) ->
     State = #state{server     = Server, 
 		   note_store = NoteStore, 
 		   mpd_state  = MpdState,
+		   domain     = Domain,
 		   sock       = Sock, 
 		   log        = Log,
 		   irb        = IRB,
@@ -227,18 +238,23 @@ do_init(Server, NoteStore) ->
 
 
 %% 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]),
+do_open_port(Port, SendSz, RecvSz, Domain, BindTo, NoReuse) ->
+    ?vtrace("do_open_port -> entry with~n"
+	    "   Port:    ~p~n"
+	    "   SendSz:  ~p~n"
+	    "   RecvSz:  ~p~n"
+	    "   Domain:  ~p~n"
+	    "   BindTo:  ~p~n"
+	    "   NoReuse: ~p",
+	    [Port, SendSz, RecvSz, Domain, BindTo, NoReuse]),
     IpOpts1 = bind_to(BindTo),
     IpOpts2 = no_reuse(NoReuse),
     IpOpts3 = recbuf(RecvSz),
     IpOpts4 = sndbuf(SendSz),
-    IpOpts  = [binary | IpOpts1 ++ IpOpts2 ++ IpOpts3 ++ IpOpts4],
+    IpOpts  =
+	[binary,
+	 snmp_conf:tdomain_to_family(Domain) |
+	 IpOpts1 ++ IpOpts2 ++ IpOpts3 ++ IpOpts4],
     OpenRes = 
 	case init:get_argument(snmpm_fd) of
 	    {ok, [[FdStr]]} ->
@@ -386,25 +402,24 @@ 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) ->
@@ -423,9 +438,11 @@ 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) ->
+handle_info(
+  {udp, Sock, Ip, Port, Bytes},
+  #state{sock = Sock, domain = Domain} = State) ->
     ?vlog("received ~w bytes from ~p:~p [~w]", [size(Bytes), Ip, Port, Sock]),
-    maybe_handle_recv_msg(Ip, Port, Bytes, State),
+    maybe_handle_recv_msg(Domain, {Ip, Port}, Bytes, State),
     {noreply, State};
 
 handle_info(inform_response_gc, State) ->
@@ -531,48 +548,50 @@ 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{filter = FilterMod, domain = ManagerDomain} = State) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_recv(Arg1, Arg2)) of
 	false ->
 	    %% Drop the received packet 
 	    inc(netIfMsgInDrops),
 	    ok;
 	_ ->
-	    handle_recv_msg(Addr, Port, Bytes, State)
+	    handle_recv_msg(Domain, Addr, Bytes, State)
     end.
     
 
-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},
+    Pid ! {snmp_error, {empty_message, Domain, Addr}, Domain, Addr},
     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, 
+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, 
+	    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),
+	    Pid ! {snmp_error, ErrorInfo, Domain, Addr},
+	    maybe_udp_send(Domain, Addr, Report, State),
 	    ok;
 
 	{discarded, Reason} ->
 	    ?vdebug("discarded: ~p", [Reason]),
 	    ErrorInfo = {failed_processing_message, Reason},
-	    Pid ! {snmp_error, ErrorInfo, Addr, Port},
+	    Pid ! {snmp_error, ErrorInfo, Domain, Addr},
 	    ok;
 
 	Error ->
@@ -582,88 +601,94 @@ handle_recv_msg(Addr, Port, Bytes,
     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, domain = ManagerDomain} = State) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_recv_pdu(Arg1, Arg2, Type)) of
 	false ->
 	    inc(netIfPduInDrops),
 	    ok;
 	_ ->
-	    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, domain = ManagerDomain} = State)
   when is_record(Trap, trappdu) ->
-    case (catch FilterMod:accept_recv_pdu(Addr, Port, trappdu)) of
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_recv_pdu(Arg1, Arg2, trappdu)) of
 	false ->
 	    inc(netIfPduInDrops),
 	    ok;
 	_ ->
-	    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
@@ -676,39 +701,43 @@ handle_inform_request({user, To}, Pid, Vsn, #pdu{request_id = ReqId} = Pdu,
 	    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) ->
+    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,
+	 domain = ManagerDomain} = State) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {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},
+		    Pid ! {snmp_error, ReqId, ErrorInfo, Domain, Addr},
 		    ok
 	    end
     end.
@@ -743,28 +772,29 @@ 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{filter = FilterMod, domain = ManagerDomain} = State) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_send_pdu(Arg1, Arg2, pdu_type_of(Pdu))) of
 	false ->
 	    inc(netIfPduOutDrops),
 	    ok;
 	_ ->
-	    handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, Port, State)
+	    handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, State)
     end.
 
-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"
@@ -774,28 +804,34 @@ handle_send_pdu(Pdu, Vsn, MsgData, _Domain, Addr, Port,
     end.
 
 
-maybe_udp_send(FilterMod, Sock, Addr, Port, Msg) ->
-    case (catch FilterMod:accept_send(Addr, Port)) of
+maybe_udp_send(
+  Domain, Addr, Msg,
+  #state{sock = Sock, filter = FilterMod, domain = ManagerDomain}) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_send(Arg1, Arg2)) of
 	false ->
 	    inc(netIfMsgOutDrops),
 	    ok;
 	_ ->
-	    udp_send(Sock, Addr, Port, Msg)
+	    %% XXX There should be some kind of lookup of socket
+	    %% from transport domain here
+	    {Ip, Port} = Addr,
+	    udp_send(Sock, Ip, Port, Msg)
     end.
 	    
     
-udp_send(Sock, Addr, Port, Msg) ->
-    case (catch gen_udp:send(Sock, Addr, Port, Msg)) of
+udp_send(Sock, Ip, Port, Msg) ->
+    case (catch gen_udp:send(Sock, Ip, Port, Msg)) of
 	ok ->
 	    ?vdebug("sent ~w bytes to ~w:~w [~w]", 
-		    [sz(Msg), Addr, Port, Sock]),
+		    [sz(Msg), Ip, Port, Sock]),
 	    ok;
 	{error, Reason} ->
 	    error_msg("failed sending message to ~p:~p: "
-		      "~n   ~p",[Addr, Port, Reason]);
+		      "~n   ~p",[Ip, Port, Reason]);
 	Error ->
 	    error_msg("failed sending message to ~p:~p: "
-		      "~n   ~p",[Addr, Port, Error])
+		      "~n   ~p",[Ip, Port, Error])
     end.
 
 sz(B) when is_binary(B) ->
@@ -989,6 +1025,26 @@ handle_set_log_type(State, _NewType) ->
     {State, {error, not_enabled}}.
 
 
+%% 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(snmpUDPDomain, {Domain, Addr})
+  when Domain =:= snmpUDPDomain;
+       Domain =:= transportDomainUdpIpv4 ->
+    Addr;
+fix_filter_address(_ManagerDomain, {Domain, _} = Address)
+  when is_atom(Domain) ->
+    Address;
+fix_filter_address(snmpUDPDomain, {_, Port} = Addr)
+  when is_integer(Port) ->
+    Addr.
+
+address(Domain, Addr) when is_atom(Domain) ->
+    {Domain, Addr};
+address(Ip, Port) when is_integer(Port) ->
+    {snmpm_config:default_transport_domain(), {Ip, Port}}.
+
 %% -------------------------------------------------------------------
 
 make_response_pdu(#pdu{request_id = ReqId, varbinds = Vbs}) ->
@@ -1029,15 +1085,17 @@ t() ->
 
 %% -------------------------------------------------------------------
 
-logger(undefined, _Type, _Addr, _Port) ->
+logger(undefined, _Type, _Domain, _Addr) ->
     fun(_) ->
 	    ok
     end;
-logger({Log, Types}, Type, Addr, Port) ->
+logger({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, Addr, Port)
+		    snmp_log:log(Log, Msg, AddrString)
 	    end;
 	false ->
 	    fun(_) ->
diff --git a/lib/snmp/src/manager/snmpm_net_if_filter.erl b/lib/snmp/src/manager/snmpm_net_if_filter.erl
index eb0c6efb11..d96ae5c145 100644
--- a/lib/snmp/src/manager/snmpm_net_if_filter.erl
+++ b/lib/snmp/src/manager/snmpm_net_if_filter.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2009. All Rights Reserved.
+%% Copyright Ericsson AB 2009-2014. 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
@@ -25,29 +25,51 @@
 
 -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..2937f5cc87 100644
--- a/lib/snmp/src/manager/snmpm_net_if_mt.erl
+++ b/lib/snmp/src/manager/snmpm_net_if_mt.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -27,9 +27,9 @@
 -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, 
 
@@ -55,13 +55,14 @@
 %% -define(VMODULE,"NET_IF").
 -include("snmp_verbosity.hrl").
 
--record(state, 
+-record(state,
 	{
 	  server,
 	  note_store,
-	  sock, 
+	  domain,
+	  sock,
 	  mpd_state,
-	  log, 
+	  log,
 	  irb = auto, % auto | {user, integer()}
 	  irgc,
 	  filter
@@ -99,30 +100,32 @@ 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, 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, 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) 
+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).
@@ -202,7 +205,14 @@ do_init(Server, NoteStore) ->
     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),
+    Domain =
+	case snmpm_config:system_info(domain) of
+	    {ok, D} ->
+		D;
+	    _ ->
+		snmpm_config:default_transport_domain()
+	end,
+    {ok, Sock} = do_open_port(Port, SndBuf, RecBuf, Domain, BindTo, NoReuse),
 
     %% Flow control --
     FilterOpts = get_opt(Opts, filter, []),
@@ -218,10 +228,11 @@ do_init(Server, NoteStore) ->
     init_counters(),
     
     %% -- We are done ---
-    State = #state{server     = Server, 
-		   note_store = NoteStore, 
+    State = #state{server     = Server,
+		   note_store = NoteStore,
 		   mpd_state  = MpdState,
-		   sock       = Sock, 
+		   domain     = Domain,
+		   sock       = Sock,
 		   log        = Log,
 		   irb        = IRB,
 		   irgc       = IrGcRef,
@@ -231,19 +242,24 @@ do_init(Server, NoteStore) ->
 
 
 %% 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]),
+do_open_port(Port, SendSz, RecvSz, Domain, BindTo, NoReuse) ->
+    ?vtrace("do_open_port -> entry with~n"
+	    "   Port:    ~p~n"
+	    "   SendSz:  ~p~n"
+	    "   RecvSz:  ~p~n"
+	    "   Domain:  ~p~n"
+	    "   BindTo:  ~p~n"
+	    "   NoReuse: ~p",
+	    [Port, SendSz, RecvSz, Domain, BindTo, NoReuse]),
     IpOpts1 = bind_to(BindTo),
     IpOpts2 = no_reuse(NoReuse),
     IpOpts3 = recbuf(RecvSz),
     IpOpts4 = sndbuf(SendSz),
-    IpOpts  = [binary | IpOpts1 ++ IpOpts2 ++ IpOpts3 ++ IpOpts4],
-    OpenRes = 
+    IpOpts  =
+	[binary,
+	 snmp_conf:tdomain_to_family(Domain) |
+	 IpOpts1 ++ IpOpts2 ++ IpOpts3 ++ IpOpts4],
+    OpenRes =
 	case init:get_argument(snmpm_fd) of
 	    {ok, [[FdStr]]} ->
 		Fd = list_to_integer(FdStr),
@@ -396,25 +412,24 @@ 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), 
-    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),
+    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) ->
@@ -433,9 +448,11 @@ 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) ->
+handle_info(
+  {udp, Sock, Ip, Port, Bytes},
+  #state{sock = Sock, domain = Domain} = State) ->
     ?vlog("received ~w bytes from ~p:~p", [size(Bytes), Ip, Port]),
-    handle_udp(Ip, Port, Bytes, State),
+    handle_udp(Domain, {Ip, Port}, Bytes, State),
     {noreply, State};
 
 handle_info(inform_response_gc, State) ->
@@ -500,60 +517,64 @@ code_change(_Vsn, State, _Extra) ->
 %%% 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
+handle_udp(Domain, Addr, Bytes, State) ->
+    Verbosity = get(verbosity),
+    spawn_opt(
+      fun() ->
+	      Log = worker_init(State, Verbosity),
+	      Res =
+		  (catch maybe_handle_recv_msg(
+			   Domain, Addr, Bytes,
+			   State#state{log = Log})),
+	      worker_exit(udp, {Domain, Addr}, Res)
+      end,
+      [monitor]).
+
+
+maybe_handle_recv_msg(
+  Domain, Addr, Bytes,
+  #state{filter = FilterMod, domain = ManagerDomain} = State) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_recv(Arg1, Arg2)) of
 	false ->
-	    %% Drop the received packet 
+	    %% Drop the received packet
 	    inc(netIfMsgInDrops),
 	    ok;
 	_ ->
-	    handle_recv_msg(Addr, Port, Bytes, State)
+	    handle_recv_msg(Domain, Addr, Bytes, State)
     end.
     
 
-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},
+    Pid ! {snmp_error, {empty_message, Domain, Addr}, Domain, Addr},
     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, 
+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, 
+	    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),
+	    Pid ! {snmp_error, ErrorInfo, Domain, Addr},
+	    maybe_udp_send(Domain, Addr, Report, State),
 	    ok;
 
 	{discarded, Reason} ->
 	    ?vdebug("discarded: ~p", [Reason]),
 	    ErrorInfo = {failed_processing_message, Reason},
-	    Pid ! {snmp_error, ErrorInfo, Addr, Port},
+	    Pid ! {snmp_error, ErrorInfo, Domain, Addr},
 	    ok;
 
 	Error ->
@@ -563,94 +584,100 @@ handle_recv_msg(Addr, Port, Bytes,
     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, domain = ManagerDomain} = State) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_recv_pdu(Arg1, Arg2, Type)) of
 	false ->
 	    inc(netIfPduInDrops),
 	    ok;
 	_ ->
-	    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, domain = ManagerDomain} = State)
   when is_record(Trap, trappdu) ->
-    case (catch FilterMod:accept_recv_pdu(Addr, Port, trappdu)) of
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_recv_pdu(Arg1, Arg2, trappdu)) of
 	false ->
 	    inc(netIfPduInDrops),
 	    ok;
 	_ ->
-	    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},
+    Pid ! {snmp_report, {ok, Pdu}, Domain, Addr},
     ok;
-handle_recv_pdu(Addr, Port, 
-		_Vsn, #pdu{type = report} = Pdu, _PduMS, 
-		{error, ReqId, Reason}, 
-		_Logger, 
-		#state{server = Pid} = _State) ->
+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},
+    Pid ! {snmp_report, {error, ReqId, Reason, Pdu}, Domain, Addr},
     ok;
-handle_recv_pdu(Addr, Port, 
-		_Vsn, #pdu{type = 'snmpv2-trap'} = Pdu, _PduMS, _ACM, 
-		_Logger, 
-		#state{server = Pid} = _State) ->
+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},
+    Pid ! {snmp_trap, Pdu, Domain, Addr},
     ok;
-handle_recv_pdu(Addr, Port, 
-		_Vsn, Trap, _PduMS, _ACM, 
-		_Logger, 
-		#state{server = Pid} = _State) when is_record(Trap, trappdu) ->
+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},
+    Pid ! {snmp_trap, Trap, Domain, Addr},
     ok;
-handle_recv_pdu(Addr, Port, 
-		_Vsn, Pdu, _PduMS, _ACM, 
-		_Logger, 
-		#state{server = Pid} = _State) when is_record(Pdu, pdu) ->
+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},
+    Pid ! {snmp_pdu, Pdu, Domain, Addr},
     ok;
-handle_recv_pdu(_Addr, _Port, _Vsn, Pdu, _PduMS, ACM, _Logger, _State) ->
+handle_recv_pdu(
+  _Domain, _Addr, _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) ->
+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
@@ -664,53 +691,58 @@ handle_inform_request({user, To}, Pid, Vsn, #pdu{request_id = ReqId} = Pdu,
 	    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]).
-    
+
+handle_inform_response(Ref, Domain, Addr, State) ->
+    Verbosity = get(verbosity),
+    spawn_opt(
+      fun() ->
+	      Log = worker_init(State, Verbosity),
+	      Res = (catch do_handle_inform_response(
+			     Ref, Domain, Addr, State#state{log = Log})),
+	      worker_exit(inform_response, {Domain, Addr}, Res)
+      end,
+      [monitor]).
+
 
 
-do_handle_inform_response(Ref, Addr, Port, State) ->
-    Key = {Ref, Addr, Port},
+do_handle_inform_response(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,
+	 sock   = Sock,
+	 domain = ManagerDomain,
+	 filter = FilterMod}) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {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, Sock, FilterMod, ManagerDomain);
 		{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},
+		    Pid ! {snmp_error, ReqId, ErrorInfo, Domain, Addr},
 		    ok
 	    end
     end.
@@ -745,40 +777,42 @@ 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
+handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, State) ->
+    Verbosity = get(verbosity),
+    spawn_opt(
+      fun() ->
+	      Log = worker_init(State, Verbosity),
+	      Res = (catch maybe_handle_send_pdu(
+			     Pdu, Vsn, MsgData,
+			     Domain, Addr,
+			     State#state{log = Log})),
+	      worker_exit(send_pdu, {Domain, Addr}, Res)
+      end,
+      [monitor]).
+
+maybe_handle_send_pdu(
+  Pdu, Vsn, MsgData, Domain, Addr,
+  #state{filter = FilterMod, domain = ManagerDomain} = State) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_send_pdu(Arg1, Arg2, pdu_type_of(Pdu))) of
 	false ->
 	    inc(netIfPduOutDrops),
 	    ok;
 	_ ->
-	    do_handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, Port, State)
+	    do_handle_send_pdu(Pdu, Vsn, MsgData, Domain, Addr, 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
+do_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("do_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"
@@ -787,30 +821,38 @@ do_handle_send_pdu(Pdu, Vsn, MsgData, _Domain, Addr, Port,
 	    ok
     end.
 
+maybe_udp_send(
+  Domain, Addr, Msg,
+  #state{sock = Sock, filter = FilterMod, domain = ManagerDomain}) ->
+    maybe_udp_send(Domain, Addr, Msg, Sock, FilterMod, ManagerDomain).
 
-maybe_udp_send(FilterMod, Sock, Addr, Port, Msg) ->
-    case (catch FilterMod:accept_send(Addr, Port)) of
+maybe_udp_send(Domain, Addr, Msg, Sock, FilterMod, ManagerDomain) ->
+    {Arg1, Arg2} = fix_filter_address(ManagerDomain, {Domain, Addr}),
+    case (catch FilterMod:accept_send(Arg1, Arg2)) of
 	false ->
 	    inc(netIfMsgOutDrops),
 	    ok;
 	_ ->
-	    udp_send(Sock, Addr, Port, Msg)
+	    %% XXX There should be some kind of lookup of socket
+	    %% from transport domain here
+	    {Ip, Port} = Addr,
+	    udp_send(Sock, Ip, Port, Msg)
     end.
 	    
     
-udp_send(Sock, Addr, Port, Msg) ->
-    case (catch gen_udp:send(Sock, Addr, Port, Msg)) of
+udp_send(Sock, Ip, Port, Msg) ->
+    case (catch gen_udp:send(Sock, Ip, Port, Msg)) of
 	ok ->
 	    ?vdebug("sent ~w bytes to ~w:~w [~w]", 
-		    [sz(Msg), Addr, Port, Sock]),
+		    [sz(Msg), Ip, Port, Sock]),
 	    ok;
 	{error, Reason} ->
 	    error_msg("failed sending message to ~p:~p: "
-		      "~n   ~p",[Addr, Port, Reason]),
+		      "~n   ~p", [Ip, Port, Reason]),
 	    ok;
 	Error ->
 	    error_msg("failed sending message to ~p:~p: "
-		      "~n   ~p",[Addr, Port, Error]),
+		      "~n   ~p", [Ip, Port, Error]),
 	    ok
     end.
 
@@ -1036,25 +1078,48 @@ worker_exit(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]),
+handle_worker_exit(Pid, {udp, {Domain, Addr}, ExitStatus}) ->
+    warning_msg(
+      "Worker process (~p) terminated "
+      "while processing (incomming) message from %s:~n"
+      "~p", [Pid, snmp_conf:mk_addr_string({Domain, Addr}), 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]),
+handle_worker_exit(Pid, {send_pdu, {Domain, Addr}, ExitStatus}) ->
+    warning_msg(
+      "Worker process (~p) terminated "
+      "while processing (outgoing) pdu for %s:~n"
+      "~p", [Pid, snmp_conf:mk_addr_string({Domain, Addr}), 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]),
+handle_worker_exit(Pid, {inform_response, {Domain, Addr}, ExitStatus}) ->
+    warning_msg(
+      "Worker process (~p) terminated "
+      "while processing (outgoing) inform response for %s:~n"
+      "~p", [Pid, snmp_conf:mk_addr_string({Domain, Addr}), ExitStatus]),
     ok;
 handle_worker_exit(_, _) ->
     ok.
 
 
+%% 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(snmpUDPDomain, {Domain, Addr})
+  when Domain =:= snmpUDPDomain;
+       Domain =:= transportDomainUdpIpv4 ->
+    Addr;
+fix_filter_address(_ManagerDomain, {Domain, _} = Address)
+  when is_atom(Domain) ->
+    Address;
+fix_filter_address(snmpUDPDomain, {_, Port} = Addr)
+  when is_integer(Port) ->
+    Addr.
+
+address(Domain, Addr) when is_atom(Domain) ->
+    {Domain, Addr};
+address(Ip, Port) when is_integer(Port) ->
+    {snmpm_config:default_transport_domain(), {Ip, Port}}.
+
 %% -------------------------------------------------------------------
 
 make_response_pdu(#pdu{request_id = ReqId, varbinds = Vbs}) ->
@@ -1095,15 +1160,17 @@ t() ->
 
 %% -------------------------------------------------------------------
 
-logger(undefined, _Type, _Addr, _Port) ->
+logger(undefined, _Type, _Domain, _Addr) ->
     fun(_) ->
 	    ok
     end;
-logger({_Name, Log, Types}, Type, Addr, Port) ->
+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, Addr, Port)
+		    snmp_log:log(Log, Msg, Domain, AddrString)
 	    end;
 	false ->
 	    fun(_) ->
@@ -1256,4 +1323,3 @@ call(Pid, Req, Timeout) ->
 
 cast(Pid, Msg) ->
     gen_server:cast(Pid, Msg).
-
diff --git a/lib/snmp/src/manager/snmpm_server.erl b/lib/snmp/src/manager/snmpm_server.erl
index 9c79df2748..ece5dad082 100644
--- a/lib/snmp/src/manager/snmpm_server.erl
+++ b/lib/snmp/src/manager/snmpm_server.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -163,8 +163,7 @@
 	 reg_type,
 	 target,
 	 domain,
-	 addr, 
-	 port, 
+	 address,
 	 type, 
 	 data, 
 	 ref, 
@@ -1033,14 +1032,14 @@ 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) ->
@@ -1049,30 +1048,30 @@ handle_info({snmp_error, 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 +1175,11 @@ 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 +1192,7 @@ 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 +1228,11 @@ 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 +1245,11 @@ 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 +1287,11 @@ 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 +1304,7 @@ 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 +1342,11 @@ 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 +1359,7 @@ 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 +1395,11 @@ 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), 
@@ -1413,8 +1408,7 @@ 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},
@@ -1450,11 +1444,11 @@ 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), 
@@ -1463,8 +1457,7 @@ 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},
@@ -1507,11 +1500,11 @@ 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), 
@@ -1520,8 +1513,7 @@ 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},
@@ -1556,11 +1548,11 @@ 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), 
@@ -1569,8 +1561,7 @@ 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},
@@ -1808,15 +1799,15 @@ 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 +1822,7 @@ 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 +1834,7 @@ 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.
 
@@ -1867,12 +1858,12 @@ handle_error(_UserId, Mod, Reason, ReqId, Data, _State) ->
 
 
 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
 
@@ -1902,9 +1893,10 @@ 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
@@ -1912,15 +1904,16 @@ 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;
 
@@ -1974,7 +1967,7 @@ 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.
@@ -1999,7 +1992,7 @@ 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;
 
@@ -2016,28 +2009,30 @@ 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() ->
@@ -2053,43 +2048,47 @@ handle_pdu(_UserId, Mod, target_name = _RegType, TargetName, _Addr, _Port,
 	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]),
-    try DefMod:handle_agent(Addr, Port, Type, SnmpInfo, DefData) of
+    try DefMod:handle_agent(Domain, Addr, 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([{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
@@ -2099,7 +2098,7 @@ do_handle_agent(DefUserId, DefMod,
 		    error_msg("failed registering agent - "
 			      "handling agent "
 			      "~p <~p,~p>: ~n~w", 
-			      [TargetName, Addr, Port, Reason]),
+			      [TargetName, Domain, Addr, Reason]),
 		    ok
 	    end;
 	
@@ -2108,31 +2107,33 @@ do_handle_agent(DefUserId, DefMod,
 	    ok;
 
 	InvalidResult ->
-	    CallbackArgs = [Addr, Port, Type, SnmpInfo, DefData], 
+	    CallbackArgs = [Domain, Addr, 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} ->  
@@ -2141,18 +2142,19 @@ 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 ->
@@ -2170,34 +2172,38 @@ do_handle_agent(DefUserId, DefMod,
 
 	    %% 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])
+		    error_msg(
+		      "failed delivering ~w info to default user - "
+		      "regarding agent "
+		      "<~p,~p>: ~n~w", [Type, Domain, Addr, SnmpInfo])
 	    end;
 	
 	T:E ->
-	    CallbackArgs = [Addr, Port, Type, SnmpInfo, DefData], 
+	    CallbackArgs = [Domain, Addr, Type, SnmpInfo, DefData],
 	    handle_invalid_result(handle_agent, CallbackArgs, T, E)
 	    
     end.
@@ -2215,50 +2221,51 @@ 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
@@ -2270,66 +2277,72 @@ 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, CallbackArgs} = 
@@ -2338,8 +2351,9 @@ do_handle_trap(UserId, Mod,
 		{fun() -> Mod:handle_trap(Target, SnmpTrapInfo, Data) end, 
 		 [Target, SnmpTrapInfo, Data]};
 	    addr_port ->
-		{fun() -> Mod:handle_trap(Addr, Port, SnmpTrapInfo, Data) end, 
-		 [Addr, Port, SnmpTrapInfo, Data]}
+		{Ip, Port} = Addr,
+		{fun() -> Mod:handle_trap(Ip, Port, SnmpTrapInfo, Data) end, 
+		 [Ip, Port, SnmpTrapInfo, Data]}
 	end,
 
     try HandleTrap() of
@@ -2347,9 +2361,10 @@ do_handle_trap(UserId, Mod,
 	    ?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;
@@ -2357,7 +2372,7 @@ 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} -> 
@@ -2375,20 +2390,19 @@ 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 ->
@@ -2405,28 +2419,30 @@ do_handle_trap(UserId, Mod,
     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
@@ -2437,15 +2453,16 @@ 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 ->
@@ -2456,7 +2473,7 @@ 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;
@@ -2464,42 +2481,46 @@ 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, CallbackArgs} = 
@@ -2508,8 +2529,9 @@ do_handle_inform(UserId, Mod, Ref,
 		{fun() -> Mod:handle_inform(Target, SnmpInform, Data) end, 
 		 [Target, SnmpInform, Data]};
 	    addr_port ->
-		{fun() -> Mod:handle_inform(Addr, Port, SnmpInform, Data) end, 
-		 [Addr, Port, SnmpInform, Data]}
+		{Ip, Port} = Addr,
+		{fun() -> Mod:handle_inform(Ip, Port, SnmpInform, Data) end, 
+		 [Ip, Port, SnmpInform, Data]}
 	end,
 
      Rep = 
@@ -2520,9 +2542,11 @@ do_handle_inform(UserId, Mod, Ref,
 			"~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;
@@ -2530,7 +2554,7 @@ 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;
 
@@ -2549,21 +2573,21 @@ 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;	    
 
@@ -2576,8 +2600,8 @@ do_handle_inform(UserId, Mod, Ref,
 		reply;
 
 	    InvalidResult ->
-		handle_invalid_result(handle_inform, CallbackArgs, 
-				      InvalidResult), 
+		handle_invalid_result(
+		  handle_inform, CallbackArgs, InvalidResult), 
 		reply
 
 	catch
@@ -2586,31 +2610,34 @@ do_handle_inform(UserId, Mod, Ref,
 		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} ->
@@ -2620,7 +2647,7 @@ 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
@@ -2633,7 +2660,7 @@ 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);
 				
@@ -2641,7 +2668,7 @@ 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 ->
@@ -2652,7 +2679,7 @@ 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;
@@ -2660,25 +2687,25 @@ 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
@@ -2686,20 +2713,20 @@ 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},
@@ -2744,7 +2771,7 @@ 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} ->
@@ -2768,7 +2795,7 @@ 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;
@@ -2776,7 +2803,7 @@ 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, 
@@ -2786,32 +2813,36 @@ 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, CallbackArgs} = 
@@ -2820,8 +2851,9 @@ do_handle_report(UserId, Mod,
 		{fun() -> Mod:handle_report(Target, SnmpReport, Data) end, 
 		 [Target, SnmpReport, Data]};
 	    addr_port ->
-		{fun() -> Mod:handle_report(Addr, Port, SnmpReport, Data) end,
-		 [Addr, Port, SnmpReport, Data]}
+		{Ip, Port} = Addr,
+		{fun() -> Mod:handle_report(Ip, Port, SnmpReport, Data) end,
+		 [Ip, Port, SnmpReport, Data]}
 	end,
 
     try HandleReport() of
@@ -2831,17 +2863,18 @@ do_handle_report(UserId, Mod,
 		    "~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;
 
@@ -2860,21 +2893,20 @@ 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;	    
 
@@ -3012,50 +3044,49 @@ 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, 
@@ -3291,10 +3322,9 @@ 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.
@@ -3440,9 +3470,9 @@ maybe_demonitor(MonRef) ->
 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
diff --git a/lib/snmp/src/manager/snmpm_user.erl b/lib/snmp/src/manager/snmpm_user.erl
index e6b0b6943e..8e5a874f77 100644
--- a/lib/snmp/src/manager/snmpm_user.erl
+++ b/lib/snmp/src/manager/snmpm_user.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -39,20 +39,25 @@
 %% *** 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, Addr :: ip_address(), Port :: port_number()} | 
-				 term(), 
-		       UserData :: term()) ->
+-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(Addr     :: term(), 
-		       Port     :: pos_integer(), 
+-callback handle_agent(Domain   :: atom(),
+		       Address  :: term(),
 		       Type     :: pdu | trap | inform | report, 
 		       SnmpInfo :: snmp_gen_info() | snmp_v1_trap_info(), 
 		       UserData :: term()) ->
diff --git a/lib/snmp/src/manager/snmpm_user_default.erl b/lib/snmp/src/manager/snmpm_user_default.erl
index 015198cb76..b827713f27 100644
--- a/lib/snmp/src/manager/snmpm_user_default.erl
+++ b/lib/snmp/src/manager/snmpm_user_default.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -36,13 +36,13 @@ 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/misc/snmp_conf.erl b/lib/snmp/src/misc/snmp_conf.erl
index 46625989d5..f4483995cb 100644
--- a/lib/snmp/src/misc/snmp_conf.erl
+++ b/lib/snmp/src/misc/snmp_conf.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -25,35 +25,42 @@
 %% 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_imask/1, check_emask/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
@@ -70,17 +77,53 @@
 -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()
 
@@ -89,99 +132,143 @@ 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.
 
 
+
 %%-----------------------------------------------------------------
 
 
@@ -384,7 +471,7 @@ all_tdomains() ->
 check_tdomain(TDomain) ->
     SupportedTDomains = 
 	[
-	 ?snmpUDPDomain, 
+	 ?snmpUDPDomain, % Legacy
 	 ?transportDomainUdpIpv4,
 	 ?transportDomainUdpIpv6			 
 	],
@@ -404,6 +491,9 @@ check_tdomain(TDomain) ->
 
 %% ---------
 
+mk_tdomain() ->
+    mk_tdomain(snmpUDPDomain).
+
 mk_tdomain(snmpUDPDomain) ->
     mk_tdomain(transportDomainUdpIpv4);
 mk_tdomain(transportDomainUdpIpv4) ->
@@ -416,40 +506,64 @@ 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}).
 
@@ -512,96 +626,357 @@ 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([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(Ip) when is_tuple(Ip) andalso (size(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.
-
     
 %% ---------
 
+mk_addr_string({_IP, Port} = Addr) when is_integer(Port) ->
+    mk_addr_string({snmpUDPDomain, Addr});
+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_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_ip(transportDomainUdpIpv6, X) when is_list(X) andalso (length(X) =:= 8) ->
-    case (catch all_integer(X)) of
-	true  -> 
+
+%% ---------
+
+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_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}).
 
 
 
diff --git a/lib/snmp/src/misc/snmp_config.erl b/lib/snmp/src/misc/snmp_config.erl
index a222f842e5..9e9865f3b5 100644
--- a/lib/snmp/src/misc/snmp_config.erl
+++ b/lib/snmp/src/misc/snmp_config.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -26,16 +26,21 @@
 -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, 
@@ -90,9 +95,9 @@
 	]).
 
 
--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]).
 
 
@@ -567,11 +572,9 @@ 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"
@@ -1580,35 +1583,63 @@ 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),
@@ -1616,11 +1647,38 @@ 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).
+
+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"
@@ -1635,11 +1693,7 @@ 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) ->
@@ -1745,17 +1799,19 @@ 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"
@@ -1774,36 +1830,59 @@ 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).
@@ -2049,10 +2128,19 @@ 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 Port of
+	    {Addr, P} when is_integer(P), is_atom(IP) ->
+		Domain = IP,
+		[{domain,  Domain},
+		 {port,    P},
+		 {address, Addr}];
+	    _ when is_integer(Port) ->
+		[{port,    Port},
+		 {address, IP}]
+	end ++
+	[{engine_id,        EngineID},
+	 {max_message_size, MMS}],
     write_manager_config(Dir, Hdr, Conf).
 
 write_manager_config(Dir, Hdr, Conf) ->
@@ -2410,83 +2498,92 @@ 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
@@ -2496,63 +2593,159 @@ 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()}.
+
+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.
 
-do_read_config_file(Dir, FileName, Verify) ->
+%% 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).
@@ -2575,8 +2768,8 @@ 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_log.erl b/lib/snmp/src/misc/snmp_log.erl
index ae28df37fa..4b22281b89 100644
--- a/lib/snmp/src/misc/snmp_log.erl
+++ b/lib/snmp/src/misc/snmp_log.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2014. 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
@@ -23,7 +23,7 @@
 -export([
 	 create/4, create/5, create/6, open/1, open/2, 
 	 change_size/2, close/1, sync/1, info/1, 
-	 log/4, 
+	 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
 	]).
@@ -231,7 +231,20 @@ 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", 
@@ -344,12 +357,20 @@ validate_loop(Error, _Log, _Write, _PrevTS, _PrevSN) ->
 %% log(Log, Packet, Addr, Port)
 %%-----------------------------------------------------------------
 
-log(#snmp_log{id = Log, seqno = SeqNo}, 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, 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"
@@ -361,18 +382,35 @@ 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, Addr, Port};
-	{ok, NextSeqNo} ->
-	    {timestamp(), NextSeqNo, Packet, Addr, Port}
+	    {timestamp(), Packet, AddrStr};
+	{ok, NextSeqNo} when is_integer(NextSeqNo) ->
+	    {timestamp(), NextSeqNo, Packet, AddrStr}
     catch
 	_:_ ->
-	    {timestamp(), Packet, Addr, Port}
+	    {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, Ip, Port};
+	{ok, NextSeqNo} when is_integer(NextSeqNo) ->
+	    {timestamp(), NextSeqNo, Packet, Ip, Port}
+    catch
+	_:_ ->
+	    {timestamp(), Packet, Ip, Port}
     end.
 
 next_seqno({M, F, A}) ->
@@ -674,60 +712,68 @@ 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.
     
     
@@ -771,44 +817,71 @@ 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.
+    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_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_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_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_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]).
+%% 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
 %%
@@ -909,8 +982,10 @@ 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_pdus.erl b/lib/snmp/src/misc/snmp_pdus.erl
index 15156f7467..90fa4c0dea 100644
--- a/lib/snmp/src/misc/snmp_pdus.erl
+++ b/lib/snmp/src/misc/snmp_pdus.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -174,7 +174,7 @@ 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 +664,9 @@ 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/test/Makefile b/lib/snmp/test/Makefile
index 7bc9dd07d4..a9bbe7fe62 100644
--- a/lib/snmp/test/Makefile
+++ b/lib/snmp/test/Makefile
@@ -2,7 +2,7 @@
 
 # %CopyrightBegin%
 # 
-# Copyright Ericsson AB 1997-2012. All Rights Reserved.
+# Copyright Ericsson AB 1997-2014. 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
@@ -36,7 +36,7 @@ VSN = $(SNMP_VSN)
 include modules.mk
 
 SNMP_ROOT = ..
-SNMP_SUITE = snmp_SUITE
+SNMP_SUITE = snmp_SUITE 
 
 ERL_FILES = $(MODULES:%=%.erl)
 
@@ -239,6 +239,7 @@ release_tests_spec: opt
 	$(INSTALL_DATA) $(RELTEST_FILES) $(COVER_SPEC_FILE) "$(RELSYSDIR)"
 	chmod -R u+w "$(RELSYSDIR)"
 	tar cf - snmp_test_data | (cd "$(RELSYSDIR)"; tar xf -)
+	tar cf - *_SUITE_data | (cd "$(RELSYSDIR)"; tar xf -)
 
 release_docs_spec:
 
diff --git a/lib/snmp/test/klas3.erl b/lib/snmp/test/klas3.erl
index ec78d19dbb..4cbd852b2d 100644
--- a/lib/snmp/test/klas3.erl
+++ b/lib/snmp/test/klas3.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2010. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2014. 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
@@ -67,11 +67,15 @@ fname(get) ->
 	end,
 	case snmpa:current_address() of
 	    {value, {[_A,_B,_C,_D], E}} when is_integer(E) -> ok;
-	    {value, _} -> throw("bad_ip");
-	    _ -> throw("bad_adr")
+	    {value, {D, _}} when is_atom(D) -> ok;
+	    {value, Ip} ->
+		throw(format_string("bad_ip: ~p", [Ip]));
+	    Other ->
+		throw(format_string("bad_adr: ~p", [Other]))
 	end,
 	case snmpa:current_net_if_data() of
 	    {value, []} -> ok;
+	    {value, [{request_ref, R}]} when is_reference(R) -> ok;
 	    {value, _} -> throw("bad_nil");
 	    _ -> throw("bad_nid")
 	end,
@@ -160,3 +164,6 @@ ftab2(get_next, [9], _Cols) ->
     % bad return value
     io:format("** Here comes Error Report get_next 3 bad return~n"),
     [{[1,5],1},{[2,5],3},{[2,6],3}].    
+
+format_string(Format, Args) ->
+    lists:flatten(io_lib:format(Format, Args)).
diff --git a/lib/snmp/test/modules.mk b/lib/snmp/test/modules.mk
index fd8315ec4d..1bf08a9729 100644
--- a/lib/snmp/test/modules.mk
+++ b/lib/snmp/test/modules.mk
@@ -19,6 +19,7 @@
 
 SUITE_MODULES = \
 	snmp_SUITE \
+        snmp_to_snmpnet_SUITE \
 	snmp_app_test \
 	snmp_appup_test \
 	snmp_compiler_test \
diff --git a/lib/snmp/test/snmp_SUITE.erl b/lib/snmp/test/snmp_SUITE.erl
index 22b9c64588..6fabf6410f 100644
--- a/lib/snmp/test/snmp_SUITE.erl
+++ b/lib/snmp/test/snmp_SUITE.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2014. 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
@@ -80,7 +80,8 @@ groups() ->
 		     {group, note_store_test}]},
      {agent, [],    [{group, mibs_test}, 
 		     {group, nfilter_test},
-		     {group, agent_test}]},
+		     {group, agent_test},
+		     {group, snmpnet_test}]},
      {manager, [],  [{group, manager_config_test},
 		     {group, manager_user_test}, 
 		     {group, manager_test}]},
@@ -95,6 +96,7 @@ groups() ->
      {mibs_test,           [], [{snmp_agent_mibs_test,     all}]},
      {nfilter_test,        [], [{snmp_agent_nfilter_test,  all}]},
      {agent_test,          [], [{snmp_agent_test,          all}]},
+     {snmpnet_test,        [], [{snmp_to_snmpnet_SUITE,    all}]},
      {manager_config_test, [], [{snmp_manager_config_test, all}]},
      {manager_user_test,   [], [{snmp_manager_user_test,   all}]},
      {manager_test,        [], [{snmp_manager_test,        all}]}
@@ -107,15 +109,18 @@ init_per_group(GroupName, Config0) ->
 	 "~n   GroupName: ~p"
 	 "~n   Config0:   ~p", [GroupName, Config0]),
 
-    %% Group name is not really the suite name
-    %% (but it is a good enough approximation), 
-    %% but it does not matter since we only need 
-    %% it to be unique. 
-    snmp_test_lib:init_suite_top_dir(GroupName, Config0).
-    
-
+    case GroupName of
+	snmpnet_test ->
+	    Config0;
+	_ ->
+	    %% Group name is not really the suite name
+	    %% (but it is a good enough approximation),
+	    %% but it does not matter since we only need
+	    %% it to be unique.
+	    snmp_test_lib:init_suite_top_dir(GroupName, Config0)
+    end.
+
+end_per_group(snmpnet_test, Config) ->
+    Config;
 end_per_group(_GroupName, Config) ->
     lists:keydelete(snmp_suite_top_dir, 1, Config).
-
-
-
diff --git a/lib/snmp/test/snmp_agent_test.erl b/lib/snmp/test/snmp_agent_test.erl
index 2a9f2e842d..9a9258aa91 100644
--- a/lib/snmp/test/snmp_agent_test.erl
+++ b/lib/snmp/test/snmp_agent_test.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2003-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2003-2014. 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
@@ -37,7 +37,7 @@
 	 v1_processing/1, 
 	 big/1, 
 	 big2/1,
-	 loop_mib_1/1, 
+	 loop_mib_1/1,
 	 api/1, 
 	 subagent/1, 
 	 mnesia/1, 
@@ -298,7 +298,6 @@
 	 %% tickets2
 	 otp8395/1, 
 	 otp9884/1
-
 	]).
 
 %% Internal exports
@@ -390,9 +389,9 @@
 	 usm_read/0, 
 	 usm_del_user/0, 
 	 usm_bad/0, 
-	 loop_mib_1_test/0, 
-	 loop_mib_2_test/0, 
-	 loop_mib_3_test/0, 
+	 loop_mib_1_test/0,
+	 loop_mib_2_test/0,
+	 loop_mib_3_test/0,
 	 otp_1129_i/1, 
 	 otp_1162_test/0, 
 	 otp_1131_test/0, 
@@ -518,9 +517,13 @@ groups() ->
      {mib_storage_varm_mnesia,       [], varm_mib_storage_mnesia_cases()},
      {misc,                          [], misc_cases()}, 
      {test_v1,                       [], v1_cases()},
+     {test_v1_ipv6,                  [], v1_cases_ipv6()},
      {test_v2,                       [], v2_cases()},
+     {test_v2_ipv6,                  [], v2_cases_ipv6()},
      {test_v1_v2,                    [], v1_v2_cases()},
+     {test_v1_v2_ipv6,               [], v1_v2_cases()},
      {test_v3,                       [], v3_cases()},
+     {test_v3_ipv6,                  [], v3_cases_ipv6()},
      {test_multi_threaded,           [], mt_cases()},
      {multiple_reqs,                 [], mul_cases()},
      {multiple_reqs_2,               [], mul_cases_2()},
@@ -611,6 +614,14 @@ init_per_group(test_v2 = GroupName, Config) ->
     init_v2(snmp_test_lib:init_group_top_dir(GroupName, Config));
 init_per_group(test_v1 = GroupName, Config) -> 
     init_v1(snmp_test_lib:init_group_top_dir(GroupName, Config));
+init_per_group(test_v1_ipv6 = GroupName, Config) ->
+    init_per_group_ipv6(GroupName, Config, fun init_v1/1);
+init_per_group(test_v2_ipv6 = GroupName, Config) ->
+    init_per_group_ipv6(GroupName, Config, fun init_v2/1);
+init_per_group(test_v1_v2_ipv6 = GroupName, Config) ->
+    init_per_group_ipv6(GroupName, Config, fun init_v1_v2/1);
+init_per_group(test_v3_ipv6 = GroupName, Config) ->
+    init_per_group_ipv6(GroupName, Config, fun init_v3/1);
 init_per_group(misc = GroupName, Config) -> 
     init_misc(snmp_test_lib:init_group_top_dir(GroupName, Config));
 init_per_group(mib_storage_varm_mnesia = GroupName, Config) -> 
@@ -637,6 +648,18 @@ init_per_group(mib_storage_ets = GroupName, Config) ->
 init_per_group(GroupName, Config) ->
     snmp_test_lib:init_group_top_dir(GroupName, Config).
 
+init_per_group_ipv6(GroupName, Config, Init) ->
+    case ct:require(ipv6_hosts) of
+	ok ->
+	    Init(
+	      snmp_test_lib:init_group_top_dir(
+		GroupName,
+		[{ipfamily, inet6},
+		 {ip, ?LOCALHOST(inet6)} | lists:keydelete(ip, 1, Config)]));
+	_ ->
+	    {skip, "Host does not support IPV6"}
+    end.
+
 end_per_group(all_tcs, Config) ->
     finish_all(Config);
 end_per_group(otp7157, Config) -> 
@@ -655,31 +678,39 @@ end_per_group(multiple_reqs_3, Config) ->
     finish_mul(Config);
 end_per_group(test_multi_threaded, Config) -> 
 	finish_mt(Config);
-end_per_group(test_v3, Config) -> 
+end_per_group(test_v3_ipv6, Config) ->
+	finish_v3(Config);
+end_per_group(test_v1_v2_ipv6, Config) ->
+	finish_v1_v2(Config);
+end_per_group(test_v2_ipv6, Config) ->
+	finish_v2(Config);
+end_per_group(test_v1_ipv6, Config) ->
+	finish_v1(Config);
+end_per_group(test_v3, Config) ->
 	finish_v3(Config);
-end_per_group(test_v1_v2, Config) -> 
+end_per_group(test_v1_v2, Config) ->
 	finish_v1_v2(Config);
-end_per_group(test_v2, Config) -> 
+end_per_group(test_v2, Config) ->
 	finish_v2(Config);
-end_per_group(test_v1, Config) -> 
+end_per_group(test_v1, Config) ->
 	finish_v1(Config);
-end_per_group(misc, Config) -> 
+end_per_group(misc, Config) ->
 	finish_misc(Config);
-end_per_group(mib_storage_varm_mnesia, Config) -> 
+end_per_group(mib_storage_varm_mnesia, Config) ->
 	finish_varm_mib_storage_mnesia(Config);
-end_per_group(mib_storage_varm_dets, Config) -> 
+end_per_group(mib_storage_varm_dets, Config) ->
 	finish_varm_mib_storage_dets(Config);
-end_per_group(mib_storage_size_check_mnesia, Config) -> 
+end_per_group(mib_storage_size_check_mnesia, Config) ->
 	finish_size_check_msm(Config);
-end_per_group(mib_storage_size_check_dets, Config) -> 
+end_per_group(mib_storage_size_check_dets, Config) ->
 	finish_size_check_msd(Config);
-end_per_group(mib_storage_size_check_ets, Config) -> 
+end_per_group(mib_storage_size_check_ets, Config) ->
 	finish_size_check_mse(Config);
-end_per_group(mib_storage_mnesia, Config) -> 
+end_per_group(mib_storage_mnesia, Config) ->
 	finish_mib_storage_mnesia(Config);
-end_per_group(mib_storage_dets, Config) -> 
+end_per_group(mib_storage_dets, Config) ->
 	finish_mib_storage_dets(Config);
-end_per_group(mib_storage_ets, Config) -> 
+end_per_group(mib_storage_ets, Config) ->
 	finish_mib_storage_ets(Config);
 end_per_group(_GroupName, Config) ->
 	Config.
@@ -810,6 +841,10 @@ cases() ->
      {group, test_v2},
      {group, test_v1_v2}, 
      {group, test_v3},
+     {group, test_v1_ipv6},
+     {group, test_v2_ipv6},
+     {group, test_v1_v2_ipv6},
+     {group, test_v3_ipv6},
      {group, test_multi_threaded}, 
      {group, mib_storage},
      {group, tickets1}
@@ -865,8 +900,8 @@ start_v2_agent(Config) ->
 start_v2_agent(Config, Opts) ->
     snmp_agent_test_lib:start_v2_agent(Config, Opts).
 
-start_v3_agent(Config) ->
-    snmp_agent_test_lib:start_v3_agent(Config).
+%% start_v3_agent(Config) ->
+%%     snmp_agent_test_lib:start_v3_agent(Config).
 
 start_v3_agent(Config, Opts) ->
     snmp_agent_test_lib:start_v3_agent(Config, Opts).
@@ -1636,7 +1671,7 @@ del_dir(Dir, Depth) ->
             ok
     end.
 
-%v1_cases() -> [loop_mib];
+%v1_cases() -> [loop_mib_1];
 v1_cases() -> 
     [
      simple, 
@@ -1644,7 +1679,7 @@ v1_cases() ->
      v1_processing, 
      big, 
      big2,
-     loop_mib_1, 
+     loop_mib_1,
      api, 
      subagent, 
      mnesia, 
@@ -1662,14 +1697,40 @@ v1_cases() ->
      change_target_addr_config
     ].  
 
+v1_cases_ipv6() ->
+    [
+     simple,
+     v1_processing,
+     loop_mib_1,
+%%     big,
+%%     big2,
+     api,
+     subagent,
+%%     mnesia,
+%%     {group, multiple_reqs},
+     sa_register,
+%%     v1_trap, % sends v1 trap
+%%     sa_error,
+     next_across_sa,
+     undo,
+%%     {group, reported_bugs},
+     {group, standard_mibs}, % snmp_standard_mib still failing, sends v1 trap
+     sparse_table,
+%%     cnt_64, % sends v1 trap
+     opaque
+%%     change_target_addr_config % sends v1 trap
+    ].
+
 init_v1(Config) when is_list(Config) ->
     ?line SaNode = ?config(snmp_sa, Config),
     ?line create_tables(SaNode),
     ?line AgentConfDir = ?config(agent_conf_dir, Config),
     ?line MgrDir = ?config(mgr_dir, Config),
     ?line Ip = ?config(ip, Config),
-    ?line config([v1], MgrDir, AgentConfDir, 
-		 tuple_to_list(Ip), tuple_to_list(Ip)),
+    ?line IpFamily = config_ipfamily(Config),
+    ?line config(
+	    [v1], MgrDir, AgentConfDir,
+	    tuple_to_list(Ip), tuple_to_list(Ip), IpFamily),
     [{vsn, v1} | start_v1_agent(Config)].
 
 finish_v1(Config) when is_list(Config) ->
@@ -1706,14 +1767,43 @@ v2_cases() ->
      v2_caps
     ].
 
+v2_cases_ipv6() ->
+    [
+     simple_2,
+     v2_processing,
+%%     big_2,
+%%     big2_2,
+     loop_mib_2,
+     api_2,
+     subagent_2,
+%%     mnesia_2,
+%%     {group, multiple_reqs_2},
+     sa_register_2,
+     v2_trap,
+     {group, v2_inform},
+%%     sa_error_2,
+     next_across_sa_2,
+     undo_2,
+%%     {group, reported_bugs_2},
+     {group, standard_mibs_2},
+     v2_types,
+     implied,
+     sparse_table_2,
+     cnt_64_2,
+     opaque_2,
+     v2_caps
+    ].
+
 init_v2(Config) when is_list(Config) ->
     SaNode = ?config(snmp_sa, Config),
     create_tables(SaNode),
     AgentConfDir = ?config(agent_conf_dir, Config),
     MgrDir = ?config(mgr_dir, Config),
     Ip = ?config(ip, Config),
-    config([v2], MgrDir, AgentConfDir, 
-	   tuple_to_list(Ip), tuple_to_list(Ip)),
+    IpFamily = config_ipfamily(Config),
+    config(
+      [v2], MgrDir, AgentConfDir,
+      tuple_to_list(Ip), tuple_to_list(Ip), IpFamily),
     [{vsn, v2} | start_v2_agent(Config)].
 
 finish_v2(Config) when is_list(Config) ->
@@ -1732,8 +1822,9 @@ init_v1_v2(Config) when is_list(Config) ->
     AgentConfDir = ?config(agent_conf_dir, Config),
     MgrDir = ?config(mgr_dir, Config),
     Ip = ?config(ip, Config),
+    IpFamily = config_ipfamily(Config),
     config([v1,v2], MgrDir, AgentConfDir, 
-	   tuple_to_list(Ip), tuple_to_list(Ip)),
+	   tuple_to_list(Ip), tuple_to_list(Ip), IpFamily),
     [{vsn, bilingual} | start_bilingual_agent(Config)].
 
 finish_v1_v2(Config) when is_list(Config) ->
@@ -1771,6 +1862,34 @@ v3_cases() ->
      v2_caps_3
     ].
 
+v3_cases_ipv6() ->
+    [
+     simple_3,
+     v3_processing,
+%%     big_3,
+%%     big2_3,
+     api_3,
+     subagent_3,
+%%     mnesia_3,
+     loop_mib_3,
+%%     {group, multiple_reqs_3},
+     sa_register_3,
+     v3_trap,
+     {group, v3_inform},
+%%     sa_error_3,
+     next_across_sa_3,
+     undo_3,
+%%     {group, reported_bugs_3},
+     {group, standard_mibs_3},
+     {group, v3_security},
+     v2_types_3,
+     implied_3,
+     sparse_table_3,
+     cnt_64_3,
+     opaque_3,
+     v2_caps_3
+    ].
+
 init_v3(Config) when is_list(Config) ->
     %% Make sure crypto works, otherwise start_agent will fail
     %% and we will be stuck with a bunch of mnesia tables for
@@ -1792,9 +1911,16 @@ init_v3(Config) when is_list(Config) ->
     AgentConfDir = ?config(agent_conf_dir, Config),
     MgrDir = ?config(mgr_dir, Config),
     Ip = ?config(ip, Config),
-    ?line ok = config([v3], MgrDir, AgentConfDir, 
-		      tuple_to_list(Ip), tuple_to_list(Ip)),
-    [{vsn, v3} | start_v3_agent(Config)].
+    IpFamily = config_ipfamily(Config),
+    ?line ok =
+	config(
+	  [v3], MgrDir, AgentConfDir,
+	  tuple_to_list(Ip), tuple_to_list(Ip), IpFamily),
+    Opts =
+	[{master_agent_verbosity, trace},
+	 {agent_verbosity, trace},
+	 {net_if_verbosity, trace}],
+    [{vsn, v3} | start_v3_agent(Config, Opts)].
 
 finish_v3(Config) when is_list(Config) ->
     delete_tables(),
@@ -5546,7 +5672,7 @@ usm_bad() ->
 %%-----------------------------------------------------------------
 loop_mib_1(suite) -> [];
 loop_mib_1(Config) when is_list(Config) ->
-    ?P(loop_mib_1), 
+    ?P(loop_mib_1),
     ?LOG("loop_mib_1 -> initiate case",[]),
     %% snmpa:verbosity(master_agent,debug),
     %% snmpa:verbosity(mib_server,info),
@@ -5554,7 +5680,7 @@ loop_mib_1(Config) when is_list(Config) ->
     ?DBG("loop_mib_1 -> ~n"
 	   "\tSaNode:  ~p~n"
 	   "\tMgrNode: ~p~n"
-	   "\tMibDir:  ~p", [_SaNode, _MgrNode, _MibDir]),
+	   "\tMibDir:  ~p",[_SaNode, _MgrNode, _MibDir]),
     ?DBG("loop_mib_1 -> load mib SNMP-COMMUNITY-MIB",[]),
     ?line load_master_std("SNMP-COMMUNITY-MIB"),
     ?DBG("loop_mib_1 -> load mib SNMP-MPD-MIB",[]),
@@ -6378,8 +6504,6 @@ otp_4394_config(AgentConfDir, MgrDir, Ip0) ->
     ?line write_notify_conf(AgentConfDir),
     ok.
     
-
-
 otp_4394_finish(Config) when is_list(Config) ->
     ?DBG("finish_otp_4394 -> entry", []),
     C1 = stop_agent(Config),
@@ -6532,6 +6656,7 @@ otp8395({init, Config}) when is_list(Config) ->
     %% SubAgentHost = ?HPSTNAME(SubAgentNode), 
     ManagerHost  = ?HOSTNAME(ManagerNode),
 
+    IpFamily          = inet,
     Host              = snmp_test_lib:hostname(), 
     Ip                = ?LOCALHOST(),
     {ok, AgentIP0}    = snmp_misc:ip(AgentHost),
@@ -6549,9 +6674,7 @@ otp8395({init, Config}) when is_list(Config) ->
     Vsns           = [v1], 
     AgentConfDir   = ?config(agent_conf_dir, Config),
     ManagerConfDir = ?config(manager_top_dir, Config),
-    snmp_agent_test_lib:config(Vsns, 
-			       ManagerConfDir, AgentConfDir, 
-			       ManagerIP, AgentIP),
+    config(Vsns, ManagerConfDir, AgentConfDir, ManagerIP, AgentIP, IpFamily),
 
 
     %% --
@@ -6560,6 +6683,7 @@ otp8395({init, Config}) when is_list(Config) ->
 
     Config2 = start_agent([{host,          Host}, 
 			   {ip,            Ip}, 
+			   {ipfamily,      IpFamily},
 			   {agent_node,    AgentNode}, 
 			   {agent_host,    AgentHost}, 
 			   {agent_ip,      AgentIP}, 
@@ -6639,6 +6763,7 @@ otp8395(Config) when is_list(Config) ->
     put(mib_dir,  ?config(mib_dir, Config)),
     put(vsn, v1), 
     put(master_host, ?config(agent_host, Config)),
+    put(ipfamily, ?config(ipfamily, Config)),
     try_test(simple_standard_test),
 
     ?SLEEP(1000),
@@ -6666,126 +6791,12 @@ otp8395(Config) when is_list(Config) ->
 otp9884({init, Config}) when is_list(Config) ->
     ?DBG("otp9884(init) -> entry with"
 	 "~n   Config: ~p", [Config]),
-
-    %% -- 
-    %% Start nodes
-    %% 
-
-    {ok, AgentNode}   = start_node(agent),
-
-    %% We don't use a manager in this test but the (common) config 
-    %% function takes an argument that is derived from this
-    {ok, ManagerNode} = start_node(manager), 
-
-    %% -- 
-    %% Mnesia init
-    %% 
-
-    AgentDbDir = ?config(agent_db_dir, Config),
-    AgentMnesiaDir = join([AgentDbDir, "mnesia"]),
-    mnesia_init(AgentNode, AgentMnesiaDir),
-
-    mnesia_create_schema(AgentNode, [AgentNode]),
-
-    mnesia_start(AgentNode),
-
-    %% --
-    %% Host & IP
-    %% 
-
-    AgentHost   = ?HOSTNAME(AgentNode),
-    ManagerHost = ?HOSTNAME(ManagerNode),
-
-    Host              = snmp_test_lib:hostname(), 
-    Ip                = ?LOCALHOST(),
-    {ok, AgentIP0}    = snmp_misc:ip(AgentHost),
-    AgentIP           = tuple_to_list(AgentIP0), 
-    {ok, ManagerIP0}  = snmp_misc:ip(ManagerHost),
-    ManagerIP         = tuple_to_list(ManagerIP0),
-
-
-    %% --
-    %% Write agent config
-    %% 
-
-    Vsns           = [v1], 
-    ManagerConfDir = ?config(manager_top_dir, Config),
-    AgentConfDir   = ?config(agent_conf_dir, Config),
-    AgentTopDir    = ?config(agent_top_dir, Config),
-    AgentBkpDir1   = join([AgentTopDir, backup1]),
-    AgentBkpDir2   = join([AgentTopDir, backup2]),
-    ok = file:make_dir(AgentBkpDir1),
-    ok = file:make_dir(AgentBkpDir2),
-    AgentBkpDirs = [AgentBkpDir1, AgentBkpDir2], 
-    snmp_agent_test_lib:config(Vsns, 
-			       ManagerConfDir, AgentConfDir, 
-			       ManagerIP, AgentIP),
-
-
-    %% --
-    %% Start the agent
-    %% 
-
-    Config2 = start_agent([{host,              Host}, 
-			   {ip,                Ip}, 
-			   {agent_node,        AgentNode}, 
-			   {agent_host,        AgentHost}, 
-			   {agent_ip,          AgentIP}, 
-			   {agent_backup_dirs, AgentBkpDirs}|Config]),
-
-    %% -- 
-    %% Create watchdog 
-    %% 
-
-    Dog = ?WD_START(?MINS(1)),
-
-    [{watchdog, Dog} | Config2];
+    init_v1_agent([{ipfamily, inet} | Config]);
 
 otp9884({fin, Config}) when is_list(Config) ->
     ?DBG("otp9884(fin) -> entry with"
 	 "~n   Config: ~p", [Config]),
-
-    AgentNode   = ?config(agent_node, Config),
-    ManagerNode = ?config(manager_node, Config),
-
-    %% -
-    %% Stop agent (this is the nice way to do it, 
-    %% so logs and files can be closed in the proper way).
-    %% 
-
-    AgentSup = ?config(agent_sup, Config),
-    ?DBG("otp9884(fin) -> stop (stand-alone) agent: ~p", [AgentSup]),
-    stop_stdalone_agent(AgentSup), 
-
-    %% - 
-    %% Stop mnesia
-    %% 
-    ?DBG("otp9884(fin) -> stop mnesia", []),
-    mnesia_stop(AgentNode),
-
-
-    %% - 
-    %% Stop the agent node
-    %% 
-
-    ?DBG("otp9884(fin) -> stop agent node", []),
-    stop_node(AgentNode),
-
-
-    %%     SubAgentNode = ?config(sub_agent_node, Config),
-    %%     stop_node(SubAgentNode),
-
-
-    %% - 
-    %% Stop the manager node
-    %% 
-
-    ?DBG("otp9884(fin) -> stop manager node", []),
-    stop_node(ManagerNode),
-
-    Dog = ?config(watchdog, Config),
-    ?WD_STOP(Dog),
-    lists:keydelete(watchdog, 1, Config);
+    fin_v1_agent(Config);
 
 otp9884(doc) ->
     "OTP-9884 - Simlutaneous backup call should not work. ";
@@ -6845,8 +6856,6 @@ otp9884_await_backup_completion(First, Second)
     end;
 otp9884_await_backup_completion(First, Second) ->
     throw({error, {bad_completion, First, Second}}).
-
-
 %%-----------------------------------------------------------------
 
 agent_log_validation(Node) ->
@@ -7143,6 +7152,9 @@ delete_files(Config) ->
 config(Vsns, MgrDir, AgentDir, MIp, AIp) ->
     snmp_agent_test_lib:config(Vsns, MgrDir, AgentDir, MIp, AIp).
 
+config(Vsns, MgrDir, AgentDir, MIp, AIp, IpFamily) ->
+    snmp_agent_test_lib:config(Vsns, MgrDir, AgentDir, MIp, AIp, IpFamily).
+
 update_usm(Vsns, Dir) ->
     snmp_agent_test_lib:update_usm(Vsns, Dir).
     
@@ -7387,3 +7399,124 @@ p(F, A) ->
 formated_timestamp() ->
     snmp_test_lib:formated_timestamp().
 
+
+init_v1_agent(Config) -> 
+    %% -- 
+    %% Start nodes
+    %% 
+
+    {ok, AgentNode}   = start_node(agent),
+
+    %% We don't use a manager in this test but the (common) config 
+    %% function takes an argument that is derived from this
+    {ok, ManagerNode} = start_node(manager), 
+
+    %% -- 
+    %% Mnesia init
+    %% 
+
+    AgentDbDir = ?config(agent_db_dir, Config),
+    AgentMnesiaDir = join([AgentDbDir, "mnesia"]),
+    mnesia_init(AgentNode, AgentMnesiaDir),
+
+    mnesia_create_schema(AgentNode, [AgentNode]),
+
+    mnesia_start(AgentNode),
+
+    %% --
+    %% Host & IP
+    %% 
+
+    AgentHost   = ?HOSTNAME(AgentNode),
+    ManagerHost = ?HOSTNAME(ManagerNode),
+
+    Host              = snmp_test_lib:hostname(), 
+    IpFamily          = config_ipfamily(Config),
+    Ip                = ?LOCALHOST(IpFamily),
+    {ok, AgentIP0}    = snmp_misc:ip(AgentHost, IpFamily),
+    AgentIP           = tuple_to_list(AgentIP0), 
+    {ok, ManagerIP0}  = snmp_misc:ip(ManagerHost, IpFamily),
+    ManagerIP         = tuple_to_list(ManagerIP0),
+
+
+    %% --
+    %% Write agent config
+    %% 
+
+    Vsns           = [v1], 
+    ManagerConfDir = ?config(manager_top_dir, Config),
+    AgentConfDir   = ?config(agent_conf_dir, Config),
+    AgentTopDir    = ?config(agent_top_dir, Config),
+    AgentBkpDir1   = join([AgentTopDir, backup1]),
+    AgentBkpDir2   = join([AgentTopDir, backup2]),
+    ok = file:make_dir(AgentBkpDir1),
+    ok = file:make_dir(AgentBkpDir2),
+    AgentBkpDirs = [AgentBkpDir1, AgentBkpDir2], 
+    config(Vsns, ManagerConfDir, AgentConfDir, ManagerIP, AgentIP, IpFamily),
+
+
+    %% --
+    %% Start the agent
+    %% 
+
+    Config2 = start_agent([{host,              Host}, 
+			   {ip,                Ip},
+			   {agent_node,        AgentNode}, 
+			   {agent_host,        AgentHost}, 
+			   {agent_ip,          AgentIP}, 
+			   {agent_backup_dirs, AgentBkpDirs}|Config]),
+
+    %% -- 
+    %% Create watchdog 
+    %% 
+
+    Dog = ?WD_START(?MINS(1)),
+
+    [{watchdog, Dog} | Config2].
+
+fin_v1_agent(Config) ->
+    AgentNode   = ?config(agent_node, Config),
+    ManagerNode = ?config(manager_node, Config),
+
+    %% -
+    %% Stop agent (this is the nice way to do it, 
+    %% so logs and files can be closed in the proper way).
+    %% 
+
+    AgentSup = ?config(agent_sup, Config),
+    stop_stdalone_agent(AgentSup), 
+
+    %% - 
+    %% Stop mnesia
+    %% 
+    mnesia_stop(AgentNode),
+
+
+    %% - 
+    %% Stop the agent node
+    %% 
+    stop_node(AgentNode),
+
+
+    %%     SubAgentNode = ?config(sub_agent_node, Config),
+    %%     stop_node(SubAgentNode),
+
+
+    %% - 
+    %% Stop the manager node
+    %% 
+    stop_node(ManagerNode),
+
+    Dog = ?config(watchdog, Config),
+    ?WD_STOP(Dog),
+    lists:keydelete(watchdog, 1, Config).
+
+
+
+config_ipfamily(Config) ->
+    case ?config(ipfamily, Config) of
+	undefined ->
+	    inet;
+	Value ->
+	    Value
+    end.
diff --git a/lib/snmp/test/snmp_agent_test_lib.erl b/lib/snmp/test/snmp_agent_test_lib.erl
index d7109253f7..333fe6eb66 100644
--- a/lib/snmp/test/snmp_agent_test_lib.erl
+++ b/lib/snmp/test/snmp_agent_test_lib.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2005-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2005-2014. 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
@@ -39,7 +39,7 @@
 
 	 get_req/2, get_next_req/1,
 
-	 config/5,
+	 config/5, config/6,
 	 delete_files/1, 
 	 copy_file/2, 
 	 update_usm/2, 
@@ -232,13 +232,14 @@ init_case(Config) when is_list(Config) ->
     MgrNode    = ?config(snmp_mgr,    Config),
     MasterNode = ?config(snmp_master, Config),
     %% MasterNode = node(),
-
+    IpFamily  = proplists:get_value(ipfamily, Config, inet),
+    
     SaHost         = ?HOSTNAME(SaNode),
     MgrHost        = ?HOSTNAME(MgrNode),
     MasterHost     = ?HOSTNAME(MasterNode),
-    {ok, MasterIP} = snmp_misc:ip(MasterHost),
-    {ok, MIP}      = snmp_misc:ip(MgrHost),
-    {ok, SIP}      = snmp_misc:ip(SaHost),
+    {ok, MasterIP} = snmp_misc:ip(MasterHost, IpFamily),
+    {ok, MIP}      = snmp_misc:ip(MgrHost, IpFamily),
+    {ok, SIP}      = snmp_misc:ip(SaHost, IpFamily),
 
 
     put(mgr_node,    MgrNode),
@@ -250,6 +251,7 @@ init_case(Config) when is_list(Config) ->
     put(mip,         tuple_to_list(MIP)),
     put(masterip,    tuple_to_list(MasterIP)),
     put(sip,         tuple_to_list(SIP)),
+    put(ipfamily,    IpFamily),
     
     MibDir = ?config(mib_dir, Config),
     put(mib_dir, MibDir),
@@ -358,6 +360,7 @@ run(Mod, Func, Args, Opts) ->
 			      {packet_server_debug,true},
 			      {debug,true},
 			      {agent, get(master_host)}, 
+			      {ipfamily, get(ipfamily)},
 			      {agent_udp, 4000},
 			      {trap_udp, 5000},
 			      {recbuf,65535},
@@ -1368,16 +1371,35 @@ stop_node(Node) ->
 %%%-----------------------------------------------------------------
 
 config(Vsns, MgrDir, AgentConfDir, MIp, AIp) ->
+    config(Vsns, MgrDir, AgentConfDir, MIp, AIp, inet).
+
+config(Vsns, MgrDir, AgentConfDir, MIp, AIp, IpFamily) ->
     ?LOG("config -> entry with"
-	 "~n   Vsns:         ~p" 
-	 "~n   MgrDir:       ~p" 
-	 "~n   AgentConfDir: ~p" 
-	 "~n   MIp:          ~p" 
-	 "~n   AIp:          ~p", 
-	 [Vsns, MgrDir, AgentConfDir, MIp, AIp]),
-    ?line snmp_config:write_agent_snmp_files(AgentConfDir, Vsns, 
-					     MIp, ?TRAP_UDP, AIp, 4000, 
- 					     "test"),
+	 "~n   Vsns:         ~p"
+	 "~n   MgrDir:       ~p"
+	 "~n   AgentConfDir: ~p"
+	 "~n   MIp:          ~p"
+	 "~n   AIp:          ~p"
+	 "~n   IpFamily:     ~p",
+	 [Vsns, MgrDir, AgentConfDir, MIp, AIp, IpFamily]),
+    ?line {Domain, ManagerAddr} =
+	case IpFamily of
+	    inet6 ->
+		Ipv6Domain = transportDomainUdpIpv6,
+		AgentIpv6Addr = {AIp, 4000},
+		ManagerIpv6Addr = {MIp, ?TRAP_UDP},
+		?line ok =
+		    snmp_config:write_agent_snmp_files(
+		      AgentConfDir, Vsns,
+		      Ipv6Domain, ManagerIpv6Addr, AgentIpv6Addr, "test"),
+		{Ipv6Domain, ManagerIpv6Addr};
+	    _ ->
+		?line ok =
+		    snmp_config:write_agent_snmp_files(
+		      AgentConfDir, Vsns, MIp, ?TRAP_UDP, AIp, 4000, "test"),
+		{snmpUDPDomain, {MIp, ?TRAP_UDP}}
+	  end,
+
     ?line case update_usm(Vsns, AgentConfDir) of
 	      true ->
 		  ?line copy_file(join(AgentConfDir, "usm.conf"),
@@ -1388,7 +1410,7 @@ config(Vsns, MgrDir, AgentConfDir, MIp, AIp) ->
 	  end,
     ?line update_community(Vsns, AgentConfDir),
     ?line update_vacm(Vsns, AgentConfDir),
-    ?line write_target_addr_conf(AgentConfDir, MIp, ?TRAP_UDP, Vsns),
+    ?line write_target_addr_conf(AgentConfDir, Domain, ManagerAddr, Vsns),
     ?line write_target_params_conf(AgentConfDir, Vsns),
     ?line write_notify_conf(AgentConfDir),
     ok.
@@ -1486,7 +1508,7 @@ rewrite_usm_mgr(Dir, ShaKey, DesKey) ->
 	    {"mgrEngine", "newUser", "newUser", zeroDotZero, 
 	     usmHMACSHAAuthProtocol, "", "", 
 	     usmDESPrivProtocol, "", "", "", ShaKey, DesKey}], 
-    ok = snmp_config:write_agent_usm_config(Dir, "", Conf).
+    ?line ok = snmp_config:write_agent_usm_config(Dir, "", Conf).
 
 reset_usm_mgr(Dir) ->
     ?line ok = file:rename(join(Dir,"usm.old"),
@@ -1512,13 +1534,15 @@ update_vacm(_Vsn, Dir) ->
     
     
 write_community_conf(Dir, Conf) ->
-    snmp_config:write_agent_community_config(Dir, "", Conf).
+    ?line ok = snmp_config:write_agent_community_config(Dir, "", Conf).
 
 write_target_addr_conf(Dir, Conf) ->
-    snmp_config:write_agent_target_addr_config(Dir, "", Conf).
+    ?line ok = snmp_config:write_agent_target_addr_config(Dir, "", Conf).
 
-write_target_addr_conf(Dir, ManagerIp, UDP, Vsns) -> 
-    snmp_config:write_agent_snmp_target_addr_conf(Dir, ManagerIp, UDP, Vsns).
+write_target_addr_conf(Dir, Ip_or_Domain, Port_or_Addr, Vsns) ->
+    ?line ok =
+	snmp_config:write_agent_snmp_target_addr_conf(
+	  Dir, Ip_or_Domain, Port_or_Addr, Vsns).
 
 rewrite_target_addr_conf(Dir, NewPort) -> 
     ?DBG("rewrite_target_addr_conf -> entry with"
@@ -1534,8 +1558,7 @@ rewrite_target_addr_conf(Dir, NewPort) ->
     end,
 
     ?line [TrapAddr|Addrs] = 
-	snmp_conf:read(TAFile, 
-		       fun(R) -> rewrite_target_addr_conf_check(R) end),
+	snmp_conf:read(TAFile, fun rewrite_target_addr_conf_check/1),
 
     ?DBG("rewrite_target_addr_conf -> TrapAddr: ~p",[TrapAddr]),
 
@@ -1571,14 +1594,14 @@ write_target_params_conf(Dir, Vsns) ->
 	   (v3) -> {"target_v3", v3,  usm, "all-rights", noAuthNoPriv}
 	end,
     Conf = [F(Vsn) || Vsn <- Vsns],
-    snmp_config:write_agent_target_params_config(Dir, "", Conf).
+    ?line ok = snmp_config:write_agent_target_params_config(Dir, "", Conf).
 
 rewrite_target_params_conf(Dir, SecName, SecLevel) 
   when is_list(SecName) andalso is_atom(SecLevel) -> 
     ?line ok = file:rename(join(Dir,"target_params.conf"),
 			   join(Dir,"target_params.old")),
     Conf = [{"target_v3", v3, usm, SecName, SecLevel}],
-    snmp_config:write_agent_target_params_config(Dir, "", Conf).
+    ?line ok = snmp_config:write_agent_target_params_config(Dir, "", Conf).
 
 reset_target_params_conf(Dir) ->
     ?line ok = file:rename(join(Dir,"target_params.old"),
@@ -1587,12 +1610,12 @@ reset_target_params_conf(Dir) ->
 write_notify_conf(Dir) -> 
     Conf = [{"standard trap",   "std_trap",   trap}, 
 	    {"standard inform", "std_inform", inform}],
-    snmp_config:write_agent_notify_config(Dir, "", Conf).
+    ?line ok = snmp_config:write_agent_notify_config(Dir, "", Conf).
 
 write_view_conf(Dir) -> 
     Conf = [{2, [1,3,6], included, null},
 	    {2, ?tDescr_instance, excluded, null}], 
-    snmp_config:write_agent_view_config(Dir, "", Conf).
+    ?line ok = snmp_config:write_agent_view_config(Dir, "", Conf).
 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff --git a/lib/snmp/test/snmp_conf_test.erl b/lib/snmp/test/snmp_conf_test.erl
index c4341d8d7e..7f5d11c0e7 100644
--- a/lib/snmp/test/snmp_conf_test.erl
+++ b/lib/snmp/test/snmp_conf_test.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2003-2010. All Rights Reserved.
+%% Copyright Ericsson AB 2003-2014. 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
@@ -373,6 +373,8 @@ verify_ip(Val) ->
     case (catch snmp_conf:check_ip(Val)) of
 	{error, Reason} ->
 	    ?FAIL({verify_ip, Val, Reason});
+	{ok, _} ->
+	    ok;
 	ok ->
 	    ok
     end.
@@ -401,7 +403,7 @@ check_taddress(Config) when is_list(Config) ->
     ok.
 
 verify_taddress(Val) ->
-    case (catch snmp_conf:check_taddress(Val)) of
+    case (catch snmp_conf:check_taddress(snmpUDPDomain, Val)) of
 	{error, Reason} ->
 	    ?FAIL({verify_taddress, Val, Reason});
 	ok ->
@@ -409,7 +411,7 @@ verify_taddress(Val) ->
     end.
 
 verify_not_taddress(Val) ->
-    case (catch snmp_conf:check_taddress(Val)) of
+    case (catch snmp_conf:check_taddress(snmpUDPDomain, Val)) of
 	ok ->
 	    ?FAIL({verify_taddress, Val});
 	{error, _Reason} ->
diff --git a/lib/snmp/test/snmp_manager_config_test.erl b/lib/snmp/test/snmp_manager_config_test.erl
index 7b9924b83c..2f5c68d14d 100644
--- a/lib/snmp/test/snmp_manager_config_test.erl
+++ b/lib/snmp/test/snmp_manager_config_test.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2004-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2014. 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
@@ -693,7 +693,7 @@ start_with_invalid_manager_conf_file1(Conf) when is_list(Conf) ->
 		       "arne_anka", "4001", "500", "\"bmkEngine\""),
     ?line {error, Reason12} = config_start(Opts),
     p("start failed (as expected): ~p", [Reason12]),
-    ?line {failed_check, _, _, 2, {invalid_ip_address, _}} = Reason12,
+    ?line {failed_check, _, _, 2, {bad_address, _}} = Reason12,
     await_config_not_running(),
 
     %% --
@@ -702,7 +702,7 @@ start_with_invalid_manager_conf_file1(Conf) when is_list(Conf) ->
 		       "9999", "4001", "500", "\"bmkEngine\""),
     ?line {error, Reason13} = config_start(Opts),
     p("start failed (as expected): ~p", [Reason13]),
-    ?line {failed_check, _, _, 2, {invalid_ip_address, _}} = Reason13,
+    ?line {failed_check, _, _, 2, {bad_address, _}} = Reason13,
     await_config_not_running(),
 
     %% --
@@ -720,7 +720,8 @@ start_with_invalid_manager_conf_file1(Conf) when is_list(Conf) ->
 		       "[134,138,177,189]", "-1", "500", "\"bmkEngine\""),
     ?line {error, Reason22} = config_start(Opts),
     p("start failed (as expected): ~p", [Reason22]),
-    ?line {failed_check, _, _, 3, {invalid_integer, _}} = Reason22,
+    io:format("Reason22: ~p~n", [Reason22]),
+   ?line {failed_check, _, _, 3, {bad_port, _}} = Reason22,
     await_config_not_running(),
 
     %% --
@@ -729,7 +730,7 @@ start_with_invalid_manager_conf_file1(Conf) when is_list(Conf) ->
 		       "[134,138,177,189]", "\"kalle-anka\"", "500", "\"bmkEngine\""),
     ?line {error, Reason23} = config_start(Opts),
     p("start failed (as expected): ~p", [Reason23]),
-    ?line {failed_check, _, _, 3, {invalid_integer, _}} = Reason23,
+    ?line {failed_check, _, _, 3, {bad_port, _}} = Reason23,
     await_config_not_running(),
 
     %% --
@@ -1073,7 +1074,7 @@ start_with_invalid_agents_conf_file1(Conf) when is_list(Conf) ->
     case config_start(Opts) of
 	{error, Reason53} ->
 	    p("start failed (as expected): ~p", [Reason53]),
-	    ?line {failed_check, _, _, _, {invalid_ip_address, _}} = Reason53,
+	    ?line {failed_check, _, _, _, {bad_address, _}} = Reason53,
 	    await_config_not_running();
 	OK_53 ->
 	    exit({error, {unexpected_success, "53", OK_53}})
@@ -1086,7 +1087,7 @@ start_with_invalid_agents_conf_file1(Conf) when is_list(Conf) ->
     case config_start(Opts) of
 	{error, Reason54} ->
 	    p("start failed (as expected): ~p", [Reason54]),
-	    ?line {failed_check, _, _, _, {invalid_ip_address, _}} = Reason54,
+	    ?line {failed_check, _, _, _, {bad_address, _}} = Reason54,
 	    await_config_not_running();
 	OK_54 ->
 	    exit({error, {unexpected_success, "54", OK_54}})
@@ -1098,7 +1099,7 @@ start_with_invalid_agents_conf_file1(Conf) when is_list(Conf) ->
     write_agents_conf(ConfDir, [Agent55]),
     ?line {error, Reason55} = config_start(Opts),
     p("start failed (as expected): ~p", [Reason55]),
-    ?line {failed_check, _, _, _, {invalid_ip_address, _}} = Reason55,
+    ?line {failed_check, _, _, _, {bad_address, _}} = Reason55,
     await_config_not_running(),
 
     %% --
@@ -1107,7 +1108,7 @@ start_with_invalid_agents_conf_file1(Conf) when is_list(Conf) ->
     write_agents_conf(ConfDir, [Agent61]),
     ?line {error, Reason61} = config_start(Opts),
     p("start failed (as expected): ~p", [Reason61]),
-    ?line {failed_check, _, _, _, {invalid_integer, _}} = Reason61,
+    ?line {failed_check, _, _, _, {bad_address, _}} = Reason61,
     await_config_not_running(),
 
     %% --
@@ -1116,7 +1117,7 @@ start_with_invalid_agents_conf_file1(Conf) when is_list(Conf) ->
     write_agents_conf(ConfDir, [Agent62]),
     ?line {error, Reason62} = config_start(Opts),
     p("start failed (as expected): ~p", [Reason62]),
-    ?line {failed_check, _, _, _, {invalid_integer, _}} = Reason62,
+    ?line {failed_check, _, _, _, {bad_address, _}} = Reason62,
     await_config_not_running(),
 
     %% --
@@ -1125,7 +1126,7 @@ start_with_invalid_agents_conf_file1(Conf) when is_list(Conf) ->
     write_agents_conf(ConfDir, [Agent63]),
     ?line {error, Reason63} = config_start(Opts),
     p("start failed (as expected): ~p", [Reason63]),
-    ?line {failed_check, _, _, _, {invalid_integer, _}} = Reason63,
+    ?line {failed_check, _, _, _, {bad_address, _}} = Reason63,
     await_config_not_running(),
 
     %% --
diff --git a/lib/snmp/test/snmp_manager_test.erl b/lib/snmp/test/snmp_manager_test.erl
index 3a654a2805..78352e59cf 100644
--- a/lib/snmp/test/snmp_manager_test.erl
+++ b/lib/snmp/test/snmp_manager_test.erl
@@ -241,8 +241,11 @@ init_per_testcase2(Case, Config) ->
     AgLogDir  = filename:join(AgTopDir,   "log/"),
     ?line ok  = file:make_dir(AgLogDir),
 
+    Family = proplists:get_value(ipfamily, Config, inet),
+
     Conf = [{watchdog,                  ?WD_START(?MINS(5))},
-	    {ip,                        ?LOCALHOST()},
+	    {ipfamily,                  Family},
+	    {ip,                        ?LOCALHOST(Family)},
 	    {case_top_dir,              CaseTopDir},
 	    {agent_dir,                 AgTopDir},
 	    {agent_conf_dir,            AgConfDir},
@@ -410,7 +413,9 @@ all() ->
      {group, event_tests}, 
      {group, event_tests_mt}, 
      discovery, 
-     {group, tickets} 
+     {group, tickets}, 
+     {group, ipv6},
+     {group, ipv6_mt}
     ].
 
 groups() -> 
@@ -545,9 +550,29 @@ groups() ->
       [
        otp8395_1
       ]
-     }
+     },
+     {ipv6, [], ipv6_tests()},
+     {ipv6_mt, [], ipv6_tests()}
+
+    ].
+
+ipv6_tests() ->
+    [
+     register_agent1,
+     simple_sync_get_next3,
+     simple_async_get2,
+     simple_sync_get3,
+     simple_async_get_next2,
+     simple_sync_set3,
+     simple_async_set2,
+     simple_sync_get_bulk2,
+     simple_async_get_bulk3,
+     misc_async2,
+     inform1,
+     inform_swarm
     ].
 
+
 init_per_group(request_tests_mt = GroupName, Config) ->
     snmp_test_lib:init_group_top_dir(
       GroupName, 
@@ -556,10 +581,26 @@ init_per_group(event_tests_mt = GroupName, Config) ->
     snmp_test_lib:init_group_top_dir(
       GroupName, 
       [{manager_net_if_module, snmpm_net_if_mt} | Config]);
+init_per_group(ipv6_mt = GroupName, Config) ->
+    case ct:require(ipv6_hosts) of
+	ok ->
+	    ipv6_init(
+	      snmp_test_lib:init_group_top_dir(
+		GroupName,
+		[{manager_net_if_module, snmpm_net_if_mt} | Config]));
+	_ ->
+	    {skip, "Host does not support IPV6"}
+    end;
+init_per_group(ipv6 = GroupName, Config) -> 
+    case ct:require(ipv6_hosts) of
+	ok ->
+	    ipv6_init(snmp_test_lib:init_group_top_dir(GroupName, Config));
+	_ ->
+	    {skip, "Host does not support IPV6"}
+    end;
 init_per_group(GroupName, Config) ->
     snmp_test_lib:init_group_top_dir(GroupName, Config).
-
-	    
+   
 end_per_group(_GroupName, Config) ->
     %% Do we really need to do this?
     lists:keydelete(snmp_group_top_dir, 1, Config).
@@ -1508,7 +1549,7 @@ register_agent3(Config) when is_list(Config) ->
     TargetName2 = "agent3", 
     ?line ok = mgr_register_agent(ManagerNode, user_alfa, TargetName2,
 				  [{tdomain,   transportDomainUdpIpv6},
-				   {address,   LocalHost},
+				   {address,   {0,0,0,0,0,0,0,1}},
 				   {port,      5002},
 				   {engine_id, "agentEngineId-2"}]),
     TargetName3 = "agent4", 
@@ -5074,7 +5115,7 @@ inform_swarm_collector(N) ->
 inform_swarm_collector(N, SentAckCnt, RecvCnt, RespCnt, _) 
   when ((N == SentAckCnt) and 
 	(N == RespCnt)    and
-	(N >= RecvCnt)) ->
+	(N =< RecvCnt)) ->
     p("inform_swarm_collector -> done when"
       "~n   N:          ~w"
       "~n   SentAckCnt: ~w"
@@ -5750,12 +5791,24 @@ fin_mgr_user(Conf) ->
 init_mgr_user_data1(Conf) ->
     Node = ?config(manager_node, Conf),
     TargetName = ?config(manager_agent_target_name, Conf),
-    Addr       = ?config(ip, Conf),
+    IpFamily   = ?config(ipfamily, Conf),
+    Ip         = ?config(ip, Conf),
     Port       = ?AGENT_PORT,
-    ?line ok = mgr_user_register_agent(Node, TargetName, 
-				       [{address,   Addr},
-					{port,      Port},
-					{engine_id, "agentEngine"}]),
+    ?line ok =
+	case IpFamily of
+	    inet ->
+		mgr_user_register_agent(
+		  Node, TargetName,
+		  [{address,   Ip},
+		   {port,      Port},
+		   {engine_id, "agentEngine"}]);
+	    inet6 ->
+		mgr_user_register_agent(
+		  Node, TargetName,
+		  [{tdomain,   transportDomainUdpIpv6},
+		   {taddress,  {Ip, Port}},
+		   {engine_id, "agentEngine"}])
+	end,
     _Agents = mgr_user_which_own_agents(Node),
     ?DBG("Own agents: ~p", [_Agents]),
 
@@ -5780,12 +5833,24 @@ init_mgr_user_data2(Conf) ->
 	 "~n   Conf: ~p", [Conf]),
     Node       = ?config(manager_node, Conf),
     TargetName = ?config(manager_agent_target_name, Conf),
-    Addr       = ?config(ip, Conf),
+    IpFamily   = ?config(ipfamily, Conf),
+    Ip         = ?config(ip, Conf),
     Port       = ?AGENT_PORT,
-    ?line ok = mgr_user_register_agent(Node, TargetName, 
-				       [{address,   Addr}, 
-					{port,      Port},
-					{engine_id, "agentEngine"}]),
+    ?line ok =
+	case IpFamily of
+	    inet ->
+		mgr_user_register_agent(
+		  Node, TargetName,
+		  [{address,   Ip},
+		   {port,      Port},
+		   {engine_id, "agentEngine"}]);
+	    inet6 ->
+		mgr_user_register_agent(
+		  Node, TargetName,
+		  [{tdomain,   transportDomainUdpIpv6},
+		   {taddress,  {Ip, Port}},
+		   {engine_id, "agentEngine"}])
+	end,
     _Agents = mgr_user_which_own_agents(Node),
     ?DBG("Own agents: ~p", [_Agents]),
 
@@ -6182,10 +6247,16 @@ await_stopped(Node, N) ->
 
 write_manager_config(Config) ->
     Dir  = ?config(manager_conf_dir, Config),
-    Ip   = ?config(ip, Config),
-    Addr = tuple_to_list(Ip),
-    snmp_config:write_manager_snmp_files(Dir, Addr, ?MGR_PORT, 
-					 ?MGR_MMS, ?MGR_ENGINE_ID, [], [], []).
+    Ip = tuple_to_list(?config(ip, Config)),
+    {Addr, Port} =
+	case ?config(ipfamily, Config) of
+	    inet ->
+		{Ip, ?MGR_PORT};
+	    inet6 ->
+		{transportDomainUdpIpv6, {Ip, ?MGR_PORT}}
+	end,
+    snmp_config:write_manager_snmp_files(
+      Dir, Addr, Port, ?MGR_MMS, ?MGR_ENGINE_ID, [], [], []).
 
 write_manager_conf(Dir) ->
     Port = "5000",
@@ -6214,25 +6285,27 @@ write_manager_conf(Dir, Str) ->
 
 write_agent_config(Vsns, Conf) ->
     Dir = ?config(agent_conf_dir, Conf),
-    Ip  = ?config(ip, Conf),
-    ?line Addr = tuple_to_list(Ip),
-    ?line ok = write_agent_config_files(Dir, Vsns, Addr),
+    ?line Ip  = tuple_to_list(?config(ip, Conf)),
+    ?line Domain =
+	case ?config(ipfamily, Conf) of
+	    inet ->
+		snmpUDPDomain;
+	    inet6 ->
+		transportDomainUdpIpv6
+	end,
+    ?line ok = write_agent_config_files(Dir, Vsns, Domain, Ip),
     ?line ok = update_agent_usm(Vsns, Dir),
     ?line ok = update_agent_community(Vsns, Dir),
     ?line ok = update_agent_vacm(Vsns, Dir),
-    ?line ok = write_agent_target_addr_conf(Dir, Addr, Vsns),
+    ?line ok = write_agent_target_addr_conf(Dir, Domain, Ip, Vsns),
     ?line ok = write_agent_target_params_conf(Dir, Vsns),
     ?line ok = write_agent_notify_conf(Dir),
     ok.
     
-write_agent_config_files(Dir, Vsns, Addr) ->
-    snmp_config:write_agent_snmp_files(Dir, Vsns, 
-				       Addr, ?MGR_PORT, 
-				       Addr, ?AGENT_PORT, 
-				       "mgr-test", "trap", 
-				       none, "", 
-				       ?AGENT_ENGINE_ID, 
-				       ?AGENT_MMS).
+write_agent_config_files(Dir, Vsns, Domain, Ip) ->
+    snmp_config:write_agent_snmp_files(
+      Dir, Vsns, Domain, {Ip, ?MGR_PORT}, {Ip, ?AGENT_PORT}, "mgr-test",
+      trap, none, "", ?AGENT_ENGINE_ID, ?AGENT_MMS).
 
 update_agent_usm(Vsns, Dir) ->
     case lists:member(v3, Vsns) of
@@ -6300,9 +6373,9 @@ update_agent_vacm(_Vsns, Dir) ->
              excluded, null}],
     snmp_config:update_agent_vacm_config(Dir, Conf).
 
-write_agent_target_addr_conf(Dir, Addr, Vsns) -> 
-    snmp_config:write_agent_snmp_target_addr_conf(Dir, Addr, ?MGR_PORT, 
-						  300, 3, Vsns).
+write_agent_target_addr_conf(Dir, Domain, Ip, Vsns) ->
+    snmp_config:write_agent_snmp_target_addr_conf(
+      Dir, Domain, {Ip, ?MGR_PORT}, 300, 3, Vsns).
 
 write_agent_target_params_conf(Dir, Vsns) -> 
     F = fun(v1) -> {"target_v1", v1,  v1,  "all-rights", noAuthNoPriv};
@@ -6426,3 +6499,5 @@ formated_timestamp() ->
 %% p(TName, F, A) ->
 %%     io:format("~w -> " ++ F ++ "~n", [TName|A]).
 
+ipv6_init(Config) when is_list(Config) ->
+    [{ipfamily, inet6} | Config].
diff --git a/lib/snmp/test/snmp_test_lib.erl b/lib/snmp/test/snmp_test_lib.erl
index fbb891e40d..5e611340a3 100644
--- a/lib/snmp/test/snmp_test_lib.erl
+++ b/lib/snmp/test/snmp_test_lib.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2002-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2002-2014. 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
@@ -22,7 +22,7 @@
 -include_lib("kernel/include/file.hrl").
 
 
--export([hostname/0, hostname/1, localhost/0, os_type/0, sz/1,
+-export([hostname/0, hostname/1, localhost/0, localhost/1, os_type/0, sz/1,
 	 display_suite_info/1]).
 -export([non_pc_tc_maybe_skip/4, os_based_skip/1]).
 -export([fix_data_dir/1, 
@@ -60,6 +60,9 @@ from(_H, []) -> [].
 localhost() ->
     {ok, Ip} = snmp_misc:ip(net_adm:localhost()),
     Ip.
+localhost(Family) ->
+    {ok, Ip} = snmp_misc:ip(net_adm:localhost(), Family),
+    Ip.
 
 sz(L) when is_list(L) ->
     length(L);
diff --git a/lib/snmp/test/snmp_test_lib.hrl b/lib/snmp/test/snmp_test_lib.hrl
index 8cc3f75dc5..9b7609b831 100644
--- a/lib/snmp/test/snmp_test_lib.hrl
+++ b/lib/snmp/test/snmp_test_lib.hrl
@@ -1,5 +1,5 @@
 %%<copyright>
-%% <year>2002-2008</year>
+%% <year>2002-2014</year>
 %% <holder>Ericsson AB, All Rights Reserved</holder>
 %%</copyright>
 %%<legalnotice>
@@ -32,14 +32,15 @@
 -define(APPLICATION,    snmp).
 -endif.
 
--define(SCONF(K,D,C),         snmp_test_lib:set_config(K,D,C)).
--define(GCONF(K,C),           snmp_test_lib:get_config(K,C)).
--define(RCONF(K,C,V),         snmp_test_lib:replace_config(K,C,V)).
--define(HOSTNAME(N),          snmp_test_lib:hostname(N)).
--define(LOCALHOST(),          snmp_test_lib:localhost()).
--define(SZ(X),                snmp_test_lib:sz(X)).
--define(OSTYPE(),             snmp_test_lib:os_type()).
--define(DISPLAY_SUITE_INFO(), snmp_test_lib:display_suite_info(?MODULE)).
+-define(SCONF(K,D,C),               snmp_test_lib:set_config(K,D,C)).
+-define(GCONF(K,C),                 snmp_test_lib:get_config(K,C)).
+-define(RCONF(K,C,V),               snmp_test_lib:replace_config(K,C,V)).
+-define(HOSTNAME(N),                snmp_test_lib:hostname(N)).
+-define(LOCALHOST(),                snmp_test_lib:localhost()).
+-define(LOCALHOST(Family),          snmp_test_lib:localhost(Family)).
+-define(SZ(X),                      snmp_test_lib:sz(X)).
+-define(OSTYPE(),                   snmp_test_lib:os_type()).
+-define(DISPLAY_SUITE_INFO(),       snmp_test_lib:display_suite_info(?MODULE)).
 
 
 %% - Test case macros - 
diff --git a/lib/snmp/test/snmp_test_mgr.erl b/lib/snmp/test/snmp_test_mgr.erl
index d4eb00ff91..cf62edba1c 100644
--- a/lib/snmp/test/snmp_test_mgr.erl
+++ b/lib/snmp/test/snmp_test_mgr.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -235,21 +235,23 @@ init({Options, CallerPid}) ->
 	    VsnHdrD = 
 		{Com, User, EngineId, CtxEngineId, mk_seclevel(SecLevel)},
 	    io:format("[~w] ~p -> VsnHdrD: ~p~n", [?MODULE, self(), VsnHdrD]),
+	    IpFamily = get_value(ipfamily, Options, inet),
+	    io:format("[~w] ~p -> IpFamily: ~p~n", [?MODULE, self(), IpFamily]),
 	    AgIp = case snmp_misc:assq(agent, Options) of
 		       {value, Tuple4} when is_tuple(Tuple4) andalso 
 					    (size(Tuple4) =:= 4) ->
 			   Tuple4;
 		       {value, Host} when is_list(Host) ->
-			   {ok, Ip} = snmp_misc:ip(Host),
+			   {ok, Ip} = snmp_misc:ip(Host, IpFamily),
 			   Ip
 		   end,
 	    io:format("[~w] ~p -> AgIp: ~p~n", [?MODULE, self(), AgIp]),
 	    Quiet = lists:member(quiet, Options),
 	    io:format("[~w] ~p -> Quiet: ~p~n", [?MODULE, self(), Quiet]),
-	    PackServ = start_packet_server(Quiet, Options, CallerPid, 
-					   AgIp, Udp, TrapUdp, 
-					   VsnHdrD, Version, Dir, RecBufSz, 
-					   PacksDbg),
+	    PackServ =
+		start_packet_server(
+		  Quiet, Options, CallerPid, AgIp, Udp, TrapUdp,
+		  VsnHdrD, Version, Dir, RecBufSz, PacksDbg, IpFamily),
 	    d("init -> packet server: ~p",[PackServ]),
 	    State = #state{parent        = CallerPid,
 			   quiet         = Quiet,
@@ -263,23 +265,21 @@ init({Options, CallerPid}) ->
     end.
 
 start_packet_server(false, _Options, _CallerPid, AgIp, Udp, TrapUdp, 
-		    VsnHdrD, Version, Dir, RecBufSz, PacksDbg) ->
+		    VsnHdrD, Version, Dir, RecBufSz, PacksDbg, IpFamily) ->
     d("start_packet_server -> entry", []),
-    ?PACK_SERV:start_link_packet({msg, self()}, 
-				 AgIp, Udp, TrapUdp, 
-				 VsnHdrD, Version, Dir, RecBufSz,
-				 PacksDbg);
+    ?PACK_SERV:start_link_packet(
+       {msg, self()}, AgIp, Udp, TrapUdp,
+       VsnHdrD, Version, Dir, RecBufSz, PacksDbg, IpFamily);
 start_packet_server(true, Options, CallerPid, AgIp, Udp, TrapUdp, 
-		    VsnHdrD, Version, Dir, RecBufSz, PacksDbg) ->
+		    VsnHdrD, Version, Dir, RecBufSz, PacksDbg, IpFamily) ->
     Type =  get_value(receive_type, Options, pdu),
     d("start_packet_server -> entry with"
       "~n   CallerPid: ~p"
       "~n   when"
       "~n   Type:      ~p",[CallerPid, Type]),
-    ?PACK_SERV:start_link_packet({Type, CallerPid}, 
-				    AgIp, Udp, TrapUdp,
-				    VsnHdrD, Version, Dir, RecBufSz,
-				    PacksDbg).
+    ?PACK_SERV:start_link_packet(
+       {Type, CallerPid}, AgIp, Udp, TrapUdp,
+       VsnHdrD, Version, Dir, RecBufSz, PacksDbg, IpFamily).
 
 is_options_ok([{mibs,List}|Opts]) when is_list(List) ->
     is_options_ok(Opts);
@@ -287,6 +287,10 @@ is_options_ok([quiet|Opts])  ->
     is_options_ok(Opts);
 is_options_ok([{agent,_}|Opts]) ->
     is_options_ok(Opts);
+is_options_ok([{ipfamily,IpFamily}|Opts])
+  when IpFamily =:= inet;
+       IpFamily =:= inet6 ->
+    is_options_ok(Opts);
 is_options_ok([{agent_udp,Int}|Opts]) when is_integer(Int) ->
     is_options_ok(Opts);
 is_options_ok([{trap_udp,Int}|Opts]) when is_integer(Int) ->
diff --git a/lib/snmp/test/snmp_test_mgr_misc.erl b/lib/snmp/test/snmp_test_mgr_misc.erl
index 5525c5c3ec..5274dcacd9 100644
--- a/lib/snmp/test/snmp_test_mgr_misc.erl
+++ b/lib/snmp/test/snmp_test_mgr_misc.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. 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
@@ -23,7 +23,7 @@
 -module(snmp_test_mgr_misc).
 
 %% API
--export([start_link_packet/8, start_link_packet/9, 
+-export([start_link_packet/8, start_link_packet/9, start_link_packet/10,
 	 stop/1, 
 	 send_discovery_pdu/2, 
 	 send_pdu/2, send_msg/4, send_bytes/2,
@@ -31,7 +31,7 @@
 	 get_pdu/1, set_pdu/2, format_hdr/1]).
 
 %% internal exports
--export([init_packet/10]).
+-export([init_packet/11]).
 
 -compile({no_auto_import, [error/2]}).
 
@@ -42,22 +42,26 @@
 %%----------------------------------------------------------------------
 %% The InHandler process will receive messages on the form {snmp_pdu, Pdu}.
 %%----------------------------------------------------------------------
-start_link_packet(InHandler, 
-		  AgentIp, UdpPort, TrapUdp,
-		  VsnHdr, Version, Dir, BufSz) ->
-    start_link_packet(InHandler, 
-		      AgentIp, UdpPort, TrapUdp,
-		      VsnHdr, Version, Dir, BufSz, 
-		      false).
-
-start_link_packet(InHandler, 
-		  AgentIp, UdpPort, TrapUdp, 
-		  VsnHdr, Version, Dir, BufSz,
-		  Dbg) when is_integer(UdpPort) ->
-    Args = [self(), InHandler,
-	    AgentIp, UdpPort, TrapUdp, 
-	    VsnHdr, Version, Dir, BufSz, 
-	    Dbg],
+start_link_packet(
+  InHandler, AgentIp, UdpPort, TrapUdp, VsnHdr, Version, Dir, BufSz) ->
+    start_link_packet(
+      InHandler, AgentIp, UdpPort, TrapUdp, VsnHdr, Version, Dir, BufSz,
+      false).
+
+start_link_packet(
+  InHandler, AgentIp, UdpPort, TrapUdp, VsnHdr, Version, Dir, BufSz,
+  Dbg) ->
+    start_link_packet(
+      InHandler, AgentIp, UdpPort, TrapUdp, VsnHdr, Version, Dir, BufSz,
+      Dbg, inet).
+
+start_link_packet(
+  InHandler, AgentIp, UdpPort, TrapUdp, VsnHdr, Version, Dir, BufSz,
+  Dbg, IpFamily) when is_integer(UdpPort) ->
+    Args =
+	[self(),
+	 InHandler, AgentIp, UdpPort, TrapUdp,  VsnHdr, Version, Dir, BufSz,
+	 Dbg, IpFamily],
     proc_lib:start_link(?MODULE, init_packet, Args).
 
 stop(Pid) ->
@@ -90,12 +94,14 @@ send_bytes(Bytes, PacketPid) ->
 %%--------------------------------------------------
 %% The SNMP encode/decode process
 %%--------------------------------------------------
-init_packet(Parent, SnmpMgr,
-	    AgentIp, UdpPort, TrapUdp,
-	    VsnHdr, Version, Dir, BufSz, DbgOptions) ->
+init_packet(
+  Parent,
+  SnmpMgr, AgentIp, UdpPort, TrapUdp, VsnHdr, Version, Dir, BufSz,
+  DbgOptions, IpFamily) ->
     put(sname, mgr_misc),
     init_debug(DbgOptions),
-    {ok, UdpId} = gen_udp:open(TrapUdp, [{recbuf,BufSz},{reuseaddr, true}]),
+    {ok, UdpId} =
+	gen_udp:open(TrapUdp, [{recbuf,BufSz}, {reuseaddr, true}, IpFamily]),
     put(msg_id, 1),
     proc_lib:init_ack(Parent, self()),
     init_usm(Version, Dir),
diff --git a/lib/snmp/test/snmp_to_snmpnet_SUITE.erl b/lib/snmp/test/snmp_to_snmpnet_SUITE.erl
new file mode 100644
index 0000000000..6e9c57bce9
--- /dev/null
+++ b/lib/snmp/test/snmp_to_snmpnet_SUITE.erl
@@ -0,0 +1,433 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2014-2014. 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%
+%%
+%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% This test suite uses the following external programs:
+%%     snmpget    From packet 'snmp' (in Ubuntu 12.04)
+%%     snmptrapd  From packet 'snmpd' (in Ubuntu 12.04)
+%% They originate from the Net-SNMP applications, see:
+%%     http://net-snmp.sourceforge.net/
+
+
+-module(snmp_to_snmpnet_SUITE).
+
+%% Note: This directive should only be used in test suites.
+-compile(export_all).
+
+-include_lib("common_test/include/ct.hrl").
+-include_lib("snmp/include/STANDARD-MIB.hrl").
+
+-define(AGENT_ENGINE_ID, "ErlangSnmpAgent").
+-define(AGENT_PORT, 4000).
+-define(MANAGER_PORT, 8989).
+-define(DEFAULT_MAX_MESSAGE_SIZE, 484).
+
+expected(?sysDescr_instance = Oid, get) ->
+    OidStr = oid_str(Oid),
+    iolist_to_binary([OidStr | " = STRING: \"Erlang SNMP agent\""]).
+
+%%--------------------------------------------------------------------
+%% Common Test interface functions -----------------------------------
+%%--------------------------------------------------------------------
+
+suite() -> [{ct_hooks,[ts_install_cth]}].
+
+all() -> 
+    [
+     {group, ipv4},
+     {group, ipv6},
+     {group, ipv4_ipv6}
+    ].
+
+groups() ->
+    [{ipv4, [],
+      [{group, get},
+       {group, inform}
+      ]},
+     {ipv6, [],
+      [{group, get},
+       {group, inform}
+      ]},
+     {ipv4_ipv6, [],
+      [{group, get},
+       {group, inform}
+      ]},
+     %%
+     {get, [],
+      [erlang_agent_netsnmp_get]},
+     {inform, [],
+      [erlang_agent_netsnmp_inform]}
+    ].
+
+init_per_suite(Config) ->
+    [{agent_port, ?AGENT_PORT}, {manager_port, ?MANAGER_PORT} | Config].
+    
+end_per_suite(_Config) ->
+    ok.
+
+init_per_group(ipv4, Config) ->
+    init_per_group_ip([inet], Config);
+init_per_group(ipv6, Config) ->
+    init_per_group_ipv6([inet6], Config);
+init_per_group(ipv4_ipv6, Config) ->
+    init_per_group_ipv6([inet, inet6], Config);
+%%
+init_per_group(get, Config) ->
+    %% From Ubuntu package snmp
+    find_executable(snmpget, Config);
+init_per_group(inform, Config) ->
+    %% From Ubuntu package snmpd
+    find_executable(snmptrapd, Config);
+%%
+init_per_group(_, Config) ->
+    Config.
+
+init_per_group_ipv6(Families, Config) ->
+    case ct:require(ipv6_hosts) of
+	ok ->
+	    init_per_group_ip(Families, Config);
+	_ ->
+	    {skip, "Host does not support IPV6"}
+    end.
+
+init_per_group_ip(Families, Config) ->
+    Dir = ?config(priv_dir, Config),
+    AgentPort = ?config(agent_port, Config),
+    ManagerPort = ?config(manager_port, Config),
+    Versions = [v2],
+    {ok, Host} = inet:gethostname(),
+    Transports =
+	[begin
+	     {ok, Addr} = inet:getaddr(Host, Family),
+	     {domain(Family), {Addr, AgentPort}}
+	 end || Family <- Families],
+    Targets =
+	[begin
+	     {ok, Addr} = inet:getaddr(Host, Family),
+	     {domain(Family), {Addr, ManagerPort}}
+	 end || Family <- Families],
+    agent_config(Dir, Transports, Targets, Versions),
+    [{port, ?AGENT_PORT}, {snmp_versions, Versions},
+     {transports, Transports}, {targets, Targets}
+     | Config].
+
+
+
+end_per_group(_GroupName, Config) ->
+    Config.
+
+init_per_testcase(_Case, Config) ->
+    Dog = ct:timetrap(10000),
+    application:stop(snmp),
+    application:unload(snmp),
+    [{watchdog, Dog} | Config].
+
+end_per_testcase(_, Config) ->
+    case application:stop(snmp) of
+	ok ->
+	    ok;
+	E1 ->
+	    ct:pal("application:stop(snmp) -> ~p", [E1])
+    end,
+    case application:unload(snmp) of
+	ok ->
+	    ok;
+	E2 ->
+	    ct:pal("application:unload(snmp) -> ~p", [E2])
+    end,
+    Config.
+
+find_executable(Exec, Config) ->
+    ExecStr = atom_to_list(Exec),
+    case os:find_executable(ExecStr) of
+	false ->
+	    %% The sbin dirs are not in the PATH on all platforms...
+	    find_sys_executable(
+	      Exec, ExecStr,
+	      [["usr", "local", "sbin"],
+	       ["usr", "sbin"],
+	       ["sbin"]],
+	     Config);
+	Path ->
+	    [{Exec, Path} | Config]
+    end.
+
+find_sys_executable(_Exec, ExecStr, [], _Config) ->
+    {skip, ExecStr ++ " not found"};
+find_sys_executable(Exec, ExecStr, [Dir | Dirs], Config) ->
+    case os:find_executable(filename:join(["/" | Dir] ++ [ExecStr])) of
+	false ->
+	    find_sys_executable(Exec, ExecStr, Dirs, Config);
+	Path ->
+	    [{Exec, Path} | Config]
+    end.
+
+start_agent(Config) ->
+    ok = application:load(snmp),
+    ok = application:set_env(snmp, agent, app_env(Config)),
+    ok = application:start(snmp).
+
+%%--------------------------------------------------------------------
+%% Test Cases --------------------------------------------------------
+%%--------------------------------------------------------------------
+erlang_agent_netsnmp_get() ->
+    [{doc,"Test that we can access erlang snmp agent " 
+      "from snmpnet manager"}].
+
+erlang_agent_netsnmp_get(Config) when is_list(Config) ->
+    Transports = ?config(transports, Config),
+    start_agent(Config),
+    Oid = ?sysDescr_instance,
+    Expected = expected(Oid, get),
+    [Expected = snmpget(Oid, Transport, Config)
+     || Transport <- Transports],
+    ok.
+
+%%--------------------------------------------------------------------
+erlang_agent_netsnmp_inform(Config) when is_list(Config) ->
+    DataDir = ?config(data_dir, Config),
+    Mib = "TestTrapv2",
+
+    start_agent(Config),
+    ok = snmpa:load_mib(snmp_master_agent, filename:join(DataDir, Mib)),
+
+    ProgHandle = start_snmptrapd(Mib, Config),
+
+    snmpa:send_notification(
+      snmp_master_agent, testTrapv22, {erlang_agent_test, self()}),
+
+    receive
+	{snmp_targets, erlang_agent_test, Addresses} ->
+	    ct:pal("Notification sent to: ~p~n", [Addresses]),
+	    erlang_agent_netsnmp_inform_responses(Addresses)
+    end,
+    stop_program(ProgHandle).
+
+erlang_agent_netsnmp_inform_responses([]) ->
+    receive
+	{snmp_notification, erlang_agent_test, _} = Unexpected ->
+	    ct:pal("Unexpected response: ~p", [Unexpected]),
+	    erlang_agent_netsnmp_inform_responses([])
+    after 0 ->
+	    ok
+    end;
+erlang_agent_netsnmp_inform_responses([Address | Addresses]) ->
+    receive
+	{snmp_notification, erlang_agent_test,
+	 {got_response, Address}} ->
+	    ct:pal("Got response from: ~p~n", [Address]),
+	    erlang_agent_netsnmp_inform_responses(Addresses);
+	{snmp_notification, erlang_agent_test,
+	 {no_response, _} = NoResponse} ->
+	    ct:fail(NoResponse)
+    end.
+
+%%--------------------------------------------------------------------
+%% Internal functions ------------------------------------------------
+%%--------------------------------------------------------------------
+snmpget(Oid, Transport, Config) ->
+    Versions = ?config(snmp_versions, Config),
+
+    Args =
+	["-c", "public", net_snmp_version(Versions),
+	 "-m", "",
+	 "-Cf",
+	 net_snmp_addr_str(Transport),
+	 oid_str(Oid)],
+    ProgHandle = start_program(snmpget, Args, none, Config),
+    {_, line, Line} = get_program_output(ProgHandle),
+    stop_program(ProgHandle),
+    Line.
+
+start_snmptrapd(Mibs, Config) ->
+    DataDir = ?config(data_dir, Config),
+    MibDir = filename:join(code:lib_dir(snmp), "mibs"),
+    Targets = ?config(targets, Config),
+    SnmptrapdArgs =
+	["-f", "-Lo", "-C",
+	 "-m", Mibs,
+	 "-M", MibDir++":"++DataDir,
+	 "--disableAuthorization=yes",
+	 "--snmpTrapdAddr=" ++ net_snmp_addr_str(Targets)],
+    {ok, StartCheckMP} = re:compile("NET-SNMP version ", [anchored]),
+    start_program(snmptrapd, SnmptrapdArgs, StartCheckMP, Config).
+
+start_program(Prog, Args, StartCheckMP, Config) ->
+    Path = ?config(Prog, Config),
+    DataDir = ?config(data_dir, Config),
+    StartWrapper = filename:join(DataDir, "start_stop_wrapper"),
+    Parent = self(),
+    Pid =
+	spawn_link(
+	  fun () ->
+		  run_program(Parent, StartWrapper, [Path | Args])
+	  end),
+    start_check(Pid, erlang:monitor(process, Pid), StartCheckMP).
+
+start_check(Pid, Mon, none) ->
+    {Pid, Mon};
+start_check(Pid, Mon, StartCheckMP) ->
+    receive
+	{Pid, line, Line} ->
+	    case re:run(Line, StartCheckMP, [{capture, none}]) of
+		match ->
+		    {Pid, Mon};
+		nomatch ->
+		    start_check(Pid, Mon, StartCheckMP)
+	    end;
+	{'DOWN', Mon, _, _, Reason} ->
+	    ct:fail("Prog ~p start failed: ~p", [Pid, Reason])
+    end.
+
+get_program_output({Pid, Mon}) ->
+    receive
+	{Pid, _, _} = Msg ->
+	    Msg;
+	{'DOWN', Mon, _, _, Reason} ->
+	    ct:fail("Prog ~p crashed: ~p", [Pid, Reason])
+    end.
+
+stop_program({Pid, _} = Handle) ->
+    Pid ! {self(), stop},
+    wait_program_stop(Handle).
+
+wait_program_stop({Pid, Mon}) ->
+    receive
+	{Pid, exit, ExitStatus} ->
+	    receive
+		{'DOWN', Mon, _, _, _} ->
+		    ExitStatus
+	    end;
+	{'DOWN', Mon, _, _, Reason} ->
+	    ct:fail("Prog stop: ~p", [Reason])
+    end.
+
+run_program(Parent, StartWrapper, ProgAndArgs) ->
+    Port =
+	open_port(
+	  {spawn_executable, StartWrapper},
+	  [{args, ProgAndArgs}, binary, stderr_to_stdout, {line, 80},
+	   exit_status]),
+    ct:pal("Prog ~p started: ~p", [Port, ProgAndArgs]),
+    run_program_loop(Parent, Port, []).
+
+run_program_loop(Parent, Port, Buf) ->
+    receive
+	{Parent, stop} ->
+	    true = port_command(Port, <<"stop\n">>),
+	    ct:pal("Prog ~p stop", [Port]),
+	    run_program_loop(Parent, Port, Buf);
+	{Port, {data, {Flag, Data}}} ->
+	    case Flag of
+		eol ->
+		    Line = iolist_to_binary(lists:reverse(Buf, Data)),
+		    ct:pal("Prog ~p output: ~s", [Port, Line]),
+		    Parent ! {self(), line, Line},
+		    run_program_loop(Parent, Port, []);
+		noeol ->
+		    run_program_loop(Parent, Port, [Data | Buf])
+	    end;
+	{Port, {exit_status,ExitStatus}} ->
+	    ct:pal("Prog ~p exit: ~p", [Port, ExitStatus]),
+	    catch port_close(Port),
+	    Parent ! {self(), exit, ExitStatus};
+	Unexpected ->
+	    ct:pal("run_program_loop Unexpected: ~p", [Unexpected]),
+	    run_program_loop(Parent, Port, Buf)
+    end.
+
+
+app_env(Config) ->
+    Dir = ?config(priv_dir, Config),
+    Vsns = ?config(snmp_versions, Config),
+    [{versions,         Vsns}, 
+     {agent_type,       master},
+     {agent_verbosity,  trace},
+     {db_dir,           Dir},
+     {audit_trail_log,  [{type, read_write},
+			 {dir,  Dir},
+			 {size, {10240, 10}}]},
+     {config,           [{dir, Dir},
+			 {force_load, true},
+			 {verbosity,  trace}]}, 
+     {local_db,         [{repair,    true},
+			 {verbosity,  silence}]}, 
+     {mib_server,       [{verbosity, silence}]},
+     {symbolic_store,   [{verbosity, silence}]},
+     {note_store,       [{verbosity, silence}]},
+     {net_if,           [{verbosity, trace}]}].
+
+oid_str([1 | Ints]) ->
+    "iso." ++ oid_str_tl(Ints);
+oid_str(Ints) ->
+    oid_str_tl(Ints).
+
+oid_str_tl([]) ->
+    "";
+oid_str_tl([Int]) ->
+    integer_to_list(Int);
+oid_str_tl([Int | Ints]) ->
+    integer_to_list(Int) ++ "." ++ oid_str_tl(Ints).
+
+agent_config(Dir, Transports, TargetDomain, TargetAddr, Versions) ->
+    agent_config(Dir, Transports, [{TargetDomain, TargetAddr}], Versions).
+%%
+agent_config(Dir, Transports, Targets, Versions) ->
+    EngineID = ?AGENT_ENGINE_ID,
+    MMS = ?DEFAULT_MAX_MESSAGE_SIZE,
+    ok = snmp_config:write_agent_snmp_conf(Dir, Transports, EngineID, MMS),
+    ok = snmp_config:write_agent_snmp_context_conf(Dir),
+    ok = snmp_config:write_agent_snmp_community_conf(Dir),
+    ok =
+	snmp_config:write_agent_snmp_standard_conf(
+	  Dir, "snmp_to_snmpnet_SUITE"),
+    ok =
+	snmp_config:write_agent_snmp_target_addr_conf(
+	  Dir, Targets, Versions),
+    ok = snmp_config:write_agent_snmp_target_params_conf(Dir, Versions),
+    ok = snmp_config:write_agent_snmp_notify_conf(Dir, inform),
+    ok = snmp_config:write_agent_snmp_vacm_conf(Dir, Versions, none).
+
+net_snmp_version([v3 | _]) ->
+    "-v3";
+net_snmp_version([v2 | _]) ->
+    "-v2c";
+net_snmp_version([v1 | _]) ->
+    "-v1".
+
+domain(inet) ->
+    transportDomainUdpIpv4;
+domain(inet6) ->
+    transportDomainUdpIpv6.
+
+net_snmp_addr_str([Target | Targets]) ->
+    net_snmp_addr_str(Target) ++
+	case Targets of
+	    [] ->
+		[];
+	    [_ | _] ->
+		"," ++ net_snmp_addr_str(Targets)
+	end;
+net_snmp_addr_str({transportDomainUdpIpv4, {Addr, Port}}) ->
+    "udp:" ++
+	inet_parse:ntoa(Addr) ++ ":" ++
+	integer_to_list(Port);
+net_snmp_addr_str({transportDomainUdpIpv6, {Addr, Port}}) ->
+    "udp6:[" ++
+	inet_parse:ntoa(Addr) ++ "]:" ++
+	integer_to_list(Port).
diff --git a/lib/snmp/test/snmp_to_snmpnet_SUITE_data/TestTrapv2.bin b/lib/snmp/test/snmp_to_snmpnet_SUITE_data/TestTrapv2.bin
new file mode 100644
index 0000000000..9d0790498d
--- /dev/null
+++ b/lib/snmp/test/snmp_to_snmpnet_SUITE_data/TestTrapv2.bin
diff --git a/lib/snmp/test/snmp_to_snmpnet_SUITE_data/TestTrapv2.mib b/lib/snmp/test/snmp_to_snmpnet_SUITE_data/TestTrapv2.mib
new file mode 100644
index 0000000000..679ddc14b0
--- /dev/null
+++ b/lib/snmp/test/snmp_to_snmpnet_SUITE_data/TestTrapv2.mib
@@ -0,0 +1,71 @@
+TestTrapv2 DEFINITIONS ::= BEGIN
+
+IMPORTS
+    MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
+    TimeTicks, Counter32, snmpModules, mib-2, enterprises, IpAddress,
+    Integer32
+        FROM SNMPv2-SMI
+    DisplayString, TestAndIncr, TimeStamp, RowStatus, TruthValue,
+    TEXTUAL-CONVENTION
+        FROM SNMPv2-TC
+    MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
+        FROM SNMPv2-CONF
+
+    system, snmp, ifIndex, ifAdminStatus, ifOperStatus
+	FROM RFC1213-MIB
+    snmpTraps
+	FROM SNMPv2-MIB;
+
+testTrapv2 MODULE-IDENTITY
+    LAST-UPDATED "9511090000Z"
+    ORGANIZATION "IETF SNMPv2 Working Group"
+    CONTACT-INFO
+            "        Marshall T. Rose
+
+             Postal: Dover Beach Consulting, Inc.
+                     420 Whisman Court
+                     Mountain View, CA  94043-2186
+                     US
+
+                Tel: +1 415 968 1052
+
+             E-mail: [email protected]"
+    DESCRIPTION
+            "The MIB module for SNMPv2 entities."
+    REVISION      "9304010000Z"
+    DESCRIPTION
+            "The initial revision of this MIB module was published as
+            RFC 1450."
+    ::= { system 100 }
+
+
+tst      OBJECT IDENTIFIER ::= { system 0 }
+
+testTrapv21 NOTIFICATION-TYPE
+    STATUS  current
+    DESCRIPTION
+            "This trap is exactly the v2 correspondance of testTrap1 in
+	    TestTrap mib."
+    ::= { snmp 1 }
+
+testTrapv22 NOTIFICATION-TYPE
+    STATUS  current
+    DESCRIPTION
+            "This trap is exactly the v2 correspondance of testTrap2 in
+	    TestTrap mib."
+    ::= { system 0 1 }
+
+linkUp NOTIFICATION-TYPE
+       OBJECTS { ifIndex, ifAdminStatus, ifOperStatus }
+       STATUS  current
+       DESCRIPTION
+               "A linkUp trap signifies that the SNMPv2 entity,
+               acting in an agent role, has detected that the
+               ifOperStatus object for one of its communication links
+               has transitioned out of the down state."
+       ::= { snmpTraps 4 }
+
+
+
+
+END
diff --git a/lib/snmp/test/snmp_to_snmpnet_SUITE_data/start_stop_wrapper b/lib/snmp/test/snmp_to_snmpnet_SUITE_data/start_stop_wrapper
new file mode 100755
index 0000000000..f806ab5c12
--- /dev/null
+++ b/lib/snmp/test/snmp_to_snmpnet_SUITE_data/start_stop_wrapper
@@ -0,0 +1,47 @@
+#! /bin/sh
+##
+## %CopyrightBegin%
+##
+## Copyright Ericsson AB 2014-2014. 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%
+##
+#
+
+## Start the given executable, wait for stop command,
+## stop the running executable and wait for exit.
+
+die () {
+    r=$?
+    echo "$0:" "$*" 1>&2
+    exit $r
+}
+
+test -x "$1" || die "Not Executable: $1"
+
+# Redirect stdin to make sure the stop command is read by us below
+# and does not go to the executable
+"$@" 0< /dev/null &
+PID=$!
+
+# Wait for stop command
+while read LINE; do
+    case :"$LINE" in
+	:"stop")
+	    break;;
+    esac
+done
+
+kill $PID
+wait $PID
diff --git a/lib/snmp/vsn.mk b/lib/snmp/vsn.mk
index 04c3cc9392..fd10244386 100644
--- a/lib/snmp/vsn.mk
+++ b/lib/snmp/vsn.mk
@@ -18,6 +18,6 @@
 # %CopyrightEnd%
 
 APPLICATION = snmp
-SNMP_VSN    = 4.25.1
+SNMP_VSN    = 5.0
 PRE_VSN     =
 APP_VSN     = "$(APPLICATION)-$(SNMP_VSN)$(PRE_VSN)"