Merge branch 'raimo/snmp/ipv4+ipv6/OTP-12020' into maint-17

* refs/heads/fetch-and-merge.maint-17-opu/FETCH_HEAD/54676: (46 commits)
  Fix error printouts to not crash
  Improve ct_snmp test cases
  Fix misspelled community in manager
  Rearrange test suite group structure
  Fix testcase for really dual ip
  Adjust test cases for daily builds
  Fix call to non-existent function
  Fix test manager in agent tests for IPv6
  Call new Net-SNMP test suite from top suite
  Improve external snmp commands args
  Test inform to dual transports
  Write list of trap targets
  Improve dual stack test suite
  Use {ipv6_v6only, true}
  Remove commented out code
  Add dual_ip tests in snmp_to_snmpnet_SUITE
  Silence logging from agent net_if at shutdown
  Rewrite agent for IPv4 + IPv6
  snmp: Add inform test
  snmp: Add new test suite
  ...

10 files changed, 1846 insertions, 1478 deletions

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.