Merge branch 'maint'

19 files changed, 987 insertions, 279 deletions

diff --git a/lib/kernel/doc/src/gen_sctp.xml b/lib/kernel/doc/src/gen_sctp.xml
index 737800c6b1..1e08b25f66 100644
--- a/lib/kernel/doc/src/gen_sctp.xml
+++ b/lib/kernel/doc/src/gen_sctp.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>2007</year><year>2016</year>
+      <year>2007</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -331,6 +331,37 @@ connect(Socket, Ip, Port>,
 	  with <anno>SockType</anno> <c>seqpacket</c>, and with reasonably large
           <seealso marker="inet#option-sndbuf">kernel</seealso> and driver
           <seealso marker="inet#option-buffer">buffers</seealso>.</p>
+	<p>
+	  If the socket is in
+          <seealso marker="#option-active">passive</seealso>
+	  mode data can be received through the
+          <seealso marker="#recv/1"><c>recv/1,2</c></seealso>
+	  calls.
+	</p>
+	<p>
+	  If the socket is in
+          <seealso marker="#option-active">active</seealso>
+	  mode data received data is delivered to the controlling process
+	  as messages:
+	</p>
+        <code type="none">
+{sctp, <anno>Socket</anno>, FromIP, FromPort, {AncData, Data}}
+	</code>
+	<p>
+	  See
+	  <seealso marker="#recv/1"><c>recv/1,2</c></seealso>
+	  for a description of the message fields.
+	</p>
+	<note>
+	  <p>
+	    This message format unfortunately differs slightly from the
+	    <seealso marker="gen_udp#open/1"><c>gen_udp</c></seealso>
+	    message format with ancillary data,
+	    and from the
+	    <seealso marker="#recv/1"><c>recv/1,2</c></seealso>
+	    return tuple format.
+	  </p>
+	</note>
       </desc>
     </func>
 
@@ -380,6 +411,19 @@ connect(Socket, Ip, Port>,
           socket option
           <seealso marker="#option-sctp_get_peer_addr_info"><c>sctp_get_peer_addr_info</c></seealso>,
           but this does still not produce the stream number).</p>
+	<p>
+	  <c><anno>AncData</anno></c> may also contain
+	  <seealso marker="inet#type-ancillary_data">
+	    ancillary data
+	  </seealso>
+	  from the socket
+	  <seealso marker="#type-option">options</seealso>
+	  <seealso marker="inet#option-recvtos"><c>recvtos</c></seealso>,
+	  <seealso marker="inet#option-recvtclass"><c>recvtclass</c></seealso>
+	  or
+	  <seealso marker="inet#option-recvttl"><c>recvttl</c></seealso>,
+	  if that is supported by the platform for the socket.
+	</p>
         <p>The <c><anno>Data</anno></c> received can be a <c>binary()</c>
           or a <c>list()</c> of bytes (integers in the range 0 through 255)
           depending on the socket mode, or an SCTP event.</p>
@@ -544,12 +588,25 @@ connect(Socket, Ip, Port>,
               <seealso marker="#recv/1"><c>recv</c></seealso> call
               to retrieve the available data from the socket.</p>
           </item>
+	  <item>
+	    <p>
+	      If <c>true|once|N</c> (active modes)
+	      received data or events are sent to the owning process.
+	      See <seealso marker="#open/0"><c>open/0..2</c></seealso>
+	      for the message format.
+	    </p>
+	  </item>
           <item>
-            <p>If <c>true</c> (full active mode), the pending data or events are
-              sent to the owning process.</p>
-            <p>Notice that this can cause the message queue to overflow,
-              as there is no way to throttle the sender in this case
-              (no flow control).</p>
+            <p>
+	      If <c>true</c> (full active mode) there is no flow control.
+	    </p>
+	    <note>
+              <p>
+		Note that this can cause the message queue to overflow
+		causing for example the virtual machine
+		to run out of memory and crash.
+	      </p>
+	    </note>
           </item>
           <item>
             <p>If <c>once</c>, only one message is automatically placed
diff --git a/lib/kernel/doc/src/gen_tcp.xml b/lib/kernel/doc/src/gen_tcp.xml
index e6104b0c76..cf649991d0 100644
--- a/lib/kernel/doc/src/gen_tcp.xml
+++ b/lib/kernel/doc/src/gen_tcp.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1997</year><year>2017</year>
+      <year>1997</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -70,6 +70,20 @@ do_recv(Sock, Bs) ->
       <name name="option"/>
     </datatype>
     <datatype>
+      <name name="pktoptions_value"/>
+      <desc>
+	<p>
+	  If the platform implements the IPv4 option
+	  <c>IP_PKTOPTIONS</c> (probably Linux specific), or the IPv6 option
+	  <c>IPV6_PKTOPTIONS</c> or <c>IPV6_2292PKTOPTIONS</c> for the socket
+	  this value is returned from
+	  <seealso marker="inet#getopts/2"><c>inet:getopts/2</c></seealso>
+	  when called with the option name
+	  <seealso marker="#type-option_name"><c>pktoptions</c></seealso>.
+	</p>
+      </desc>
+    </datatype>
+    <datatype>
       <name name="option_name"/>
     </datatype>
     <datatype>
diff --git a/lib/kernel/doc/src/gen_udp.xml b/lib/kernel/doc/src/gen_udp.xml
index f79566ef71..840ca3c188 100644
--- a/lib/kernel/doc/src/gen_udp.xml
+++ b/lib/kernel/doc/src/gen_udp.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1997</year><year>2016</year>
+      <year>1997</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -147,7 +147,21 @@
           at the opened port, if the socket is in an active mode, the packets
           are delivered as messages to the controlling process:</p>
         <code type="none">
-{udp, Socket, IP, InPortNo, Packet}</code>
+{udp, Socket, IP, InPortNo, Packet} % Without ancillary data
+{udp, Socket, IP, InPortNo, AncData, Packet} % With ancillary data
+	</code>
+	<p>
+	  The message contains an <c>AncData</c> field
+	  if any of the socket
+	  <seealso marker="#type-option">options</seealso>
+	  <seealso marker="inet#option-recvtos"><c>recvtos</c></seealso>,
+	  <seealso marker="inet#option-recvtclass"><c>recvtclass</c></seealso>
+	  or
+	  <seealso marker="inet#option-recvttl"><c>recvttl</c></seealso>
+	  are active, otherwise it does not.
+	</p>
+	<p>
+	</p>
         <p>If the socket is not in an active mode, data can be
           retrieved through the
           <seealso marker="#recv/2"><c>recv/2,3</c></seealso> calls.
@@ -179,9 +193,22 @@
       <name name="recv" arity="3"/>
       <fsummary>Receive a packet from a passive socket.</fsummary>
       <desc>
-        <p>Receives a packet from a socket in passive mode. Optional parameter
+        <p>
+	  Receives a packet from a socket in passive mode. Optional parameter
           <c><anno>Timeout</anno></c> specifies a time-out in milliseconds.
-          Defaults to <c>infinity</c>.</p>
+          Defaults to <c>infinity</c>.
+	</p>
+	<p>
+	  If any of the socket
+	  <seealso marker="#type-option">options</seealso>
+	  <seealso marker="inet#option-recvtos"><c>recvtos</c></seealso>,
+	  <seealso marker="inet#option-recvtclass"><c>recvtclass</c></seealso>
+	  or
+	  <seealso marker="inet#option-recvttl"><c>recvttl</c></seealso>
+	  are active, the <c><anno>RecvData</anno></c> tuple contains an
+	  <c><anno>AncData</anno></c> field,
+	  otherwise it does not.
+	</p>
       </desc>
     </func>
 
diff --git a/lib/kernel/doc/src/inet.xml b/lib/kernel/doc/src/inet.xml
index f281d61459..ed775d67eb 100644
--- a/lib/kernel/doc/src/inet.xml
+++ b/lib/kernel/doc/src/inet.xml
@@ -177,6 +177,27 @@ fe80::204:acff:fe17:bf38
       </desc>
     </datatype>
     <datatype>
+      <name name="ancillary_data"/>
+      <desc>
+	<p>
+	  Ancillary data received with the data packet
+	  or read with the socket option
+	  <seealso marker="gen_tcp#type-pktoptions_value">
+	    <c>pktoptions</c>
+	  </seealso>
+	  from a TCP socket.
+	</p>
+	<p>
+	  The value(s) correspond to the currently active socket
+	  <seealso marker="#type-socket_setopt">options</seealso>
+	  <seealso marker="inet#option-recvtos"><c>recvtos</c></seealso>,
+	  <seealso marker="inet#option-recvtclass"><c>recvtclass</c></seealso>
+	  and
+	  <seealso marker="inet#option-recvttl"><c>recvttl</c></seealso>.
+	</p>
+      </desc>
+    </datatype>
+    <datatype>
       <name name="posix"/>
       <desc>
         <p>An atom that is named from the POSIX error codes used in Unix,
@@ -344,7 +365,11 @@ fe80::204:acff:fe17:bf38
       <desc>
         <p>Gets one or more options for a socket. For a list of available
           options, see
-          <seealso marker="#setopts/2"><c>setopts/2</c></seealso>.</p>
+          <seealso marker="#setopts/2"><c>setopts/2</c></seealso>.
+	  See also the description for the type
+          <seealso marker="gen_tcp#type-pktoptions_value">
+	    <c>gen_tcp:pktoptions_value()</c>
+	  </seealso>.</p>
         <p>The number of elements in the returned
           <c><anno>OptionValues</anno></c>
           list does not necessarily correspond to the number of options
@@ -360,7 +385,7 @@ fe80::204:acff:fe17:bf38
           socket options not (explicitly) supported by the emulator. The
           use of raw socket options makes the code non-portable, but
           allows the Erlang programmer to take advantage of unusual features
-          present on the current platform.</p>
+          present on a particular platform.</p>
         <p><c>RawOptReq</c> consists of tag <c>raw</c> followed
           by the protocol level, the option number, and either a binary
           or the size, in bytes, of the
@@ -1115,6 +1140,100 @@ setcap cap_sys_admin,cap_sys_ptrace,cap_dac_read_search+epi beam.smp</code>
               the socket. You are encouraged to use
               <seealso marker="#getopts/2"><c>getopts/2</c></seealso>
               to retrieve the size set by your operating system.</p>
+	    <marker id="option-recvtclass"></marker>
+          </item>
+          <tag><c>{recvtclass, Boolean}</c></tag>
+          <item>
+            <p>
+	      If set to <c>true</c> activates returning the received
+	      <c>TCLASS</c> value on platforms that implements
+	      the protocol <c>IPPROTO_IPV6</c>
+	      option <c>IPV6_RECVTCLASS</c> or <c>IPV6_2292RECVTCLASS</c>
+	      for the socket.
+	      The value is returned as a <c>{tclass,TCLASS}</c> tuple
+	      regardless of if the platform returns an <c>IPV6_TCLASS</c>
+	      or an <c>IPV6_RECVTCLASS</c> CMSG value.
+	    </p>
+	    <p>
+	      For packet oriented sockets that supports receiving
+	      ancillary data with the payload data
+	      (<c>gen_udp</c> and <c>gen_sctp</c>),
+	      the <c>TCLASS</c> value is returned
+	      in an extended return tuple contained in an
+	      <seealso marker="inet#type-ancillary_data">
+		ancillary data
+	      </seealso>
+	      list.
+	      For stream oriented sockets (<c>gen_tcp</c>)
+	      the only way to get the <c>TCLASS</c>
+	      value is if the platform supports the
+	      <seealso marker="gen_tcp#type-pktoptions_value">
+		<c>pktoptions</c>
+	      </seealso>
+	      option.
+	    </p>
+	    <marker id="option-recvtos"></marker>
+          </item>
+          <tag><c>{recvtos, Boolean}</c></tag>
+          <item>
+            <p>
+	      If set to <c>true</c> activates returning the received
+	      <c>TOS</c> value on platforms that implements
+	      the protocol <c>IPPROTO_IP</c> option <c>IP_RECVTOS</c>
+	      for the socket.
+	      The value is returned as a <c>{tos,TOS}</c> tuple
+	      regardless of if the platform returns an <c>IP_TOS</c>
+	      or an <c>IP_RECVTOS</c> CMSG value.
+	    </p>
+	    <p>
+	      For packet oriented sockets that supports receiving
+	      ancillary data with the payload data
+	      (<c>gen_udp</c> and <c>gen_sctp</c>),
+	      the <c>TOS</c> value is returned
+	      in an extended return tuple contained in an
+	      <seealso marker="inet#type-ancillary_data">
+		ancillary data
+	      </seealso>
+	      list.
+	      For stream oriented sockets (<c>gen_tcp</c>)
+	      the only way to get the <c>TOS</c>
+	      value is if the platform supports the
+	      <seealso marker="gen_tcp#type-pktoptions_value">
+		<c>pktoptions</c>
+	      </seealso>
+	      option.
+	    </p>
+	    <marker id="option-recvttl"></marker>
+          </item>
+          <tag><c>{recvttl, Boolean}</c></tag>
+          <item>
+            <p>
+	      If set to <c>true</c> activates returning the received
+	      <c>TTL</c> value on platforms that implements
+	      the protocol <c>IPPROTO_IP</c> option <c>IP_RECVTTL</c>
+	      for the socket.
+	      The value is returned as a <c>{ttl,TTL}</c> tuple
+	      regardless of if the platform returns an <c>IP_TTL</c>
+	      or an <c>IP_RECVTTL</c> CMSG value.
+	    </p>
+	    <p>
+	      For packet oriented sockets that supports receiving
+	      ancillary data with the payload data
+	      (<c>gen_udp</c> and <c>gen_sctp</c>),
+	      the <c>TTL</c> value is returned
+	      in an extended return tuple contained in an
+	      <seealso marker="inet#type-ancillary_data">
+		ancillary data
+	      </seealso>
+	      list.
+	      For stream oriented sockets (<c>gen_tcp</c>)
+	      the only way to get the <c>TTL</c>
+	      value is if the platform supports the
+	      <seealso marker="gen_tcp#type-pktoptions_value">
+		<c>pktoptions</c>
+	      </seealso>
+	      option.
+	    </p>
           </item>
           <tag><c>{reuseaddr, Boolean}</c></tag>
           <item>
diff --git a/lib/kernel/src/gen_sctp.erl b/lib/kernel/src/gen_sctp.erl
index bf795ee9c6..d893d44079 100644
--- a/lib/kernel/src/gen_sctp.erl
+++ b/lib/kernel/src/gen_sctp.erl
@@ -66,7 +66,12 @@
         {sctp_set_peer_primary_addr, #sctp_setpeerprim{}} |
         {sctp_status, #sctp_status{}} |
         {sndbuf, non_neg_integer()} |
-        {tos, non_neg_integer()}.
+        {tos, non_neg_integer()} |
+        {tclass, non_neg_integer()} |
+        {ttl, non_neg_integer()} |
+        {recvtos, boolean()} |
+        {recvtclass, boolean()} |
+        {recvttl, boolean()}.
 -type option_name() ::
         active |
         buffer |
@@ -97,7 +102,12 @@
         sctp_set_peer_primary_addr |
         sctp_status |
         sndbuf |
-        tos.
+        tos |
+        tclass |
+        ttl |
+        recvtos |
+        recvtclass |
+        recvttl.
 -type sctp_socket() :: port().
 
 -export_type([assoc_id/0, option/0, option_name/0, sctp_socket/0]).
@@ -365,7 +375,7 @@ send(S, AssocChange, Stream, Data) ->
       Socket :: sctp_socket(),
       FromIP   :: inet:ip_address(),
       FromPort :: inet:port_number(),
-      AncData  :: [#sctp_sndrcvinfo{}],
+      AncData  :: [#sctp_sndrcvinfo{} | inet:ancillary_data()],
       Data     :: binary() | string() | #sctp_sndrcvinfo{}
                 | #sctp_assoc_change{} | #sctp_paddr_change{}
                 | #sctp_adaptation_event{},
@@ -382,7 +392,7 @@ recv(S) ->
       Timeout :: timeout(),
       FromIP   :: inet:ip_address(),
       FromPort :: inet:port_number(),
-      AncData  :: [#sctp_sndrcvinfo{}],
+      AncData  :: [#sctp_sndrcvinfo{} | inet:ancillary_data()],
       Data     :: binary() | string() | #sctp_sndrcvinfo{}
                 | #sctp_assoc_change{} | #sctp_paddr_change{}
                 | #sctp_adaptation_event{},
diff --git a/lib/kernel/src/gen_tcp.erl b/lib/kernel/src/gen_tcp.erl
index c61411e814..7f7833ec23 100644
--- a/lib/kernel/src/gen_tcp.erl
+++ b/lib/kernel/src/gen_tcp.erl
@@ -62,7 +62,14 @@
         {show_econnreset, boolean()} |
         {sndbuf,          non_neg_integer()} |
         {tos,             non_neg_integer()} |
+        {tclass,          non_neg_integer()} |
+        {ttl,             non_neg_integer()} |
+	{recvtos,         boolean()} |
+	{recvtclass,      boolean()} |
+	{recvttl,         boolean()} |
 	{ipv6_v6only,     boolean()}.
+-type pktoptions_value() ::
+        {pktoptions, inet:ancillary_data()}.
 -type option_name() ::
         active |
         buffer |
@@ -81,6 +88,7 @@
         nodelay |
         packet |
         packet_size |
+        pktoptions |
         priority |
         {raw,
          Protocol :: non_neg_integer(),
@@ -94,6 +102,12 @@
         show_econnreset |
         sndbuf |
         tos |
+        tclass |
+        ttl |
+        recvtos |
+        recvtclass |
+        recvttl |
+        pktoptions |
 	ipv6_v6only.
 -type connect_option() ::
         {ip, inet:socket_address()} |
@@ -119,7 +133,7 @@
 -type socket() :: port().
 
 -export_type([option/0, option_name/0, connect_option/0, listen_option/0,
-              socket/0]).
+              socket/0, pktoptions_value/0]).
 
 %%
 %% Connect a socket
diff --git a/lib/kernel/src/gen_udp.erl b/lib/kernel/src/gen_udp.erl
index 44eef9f3c5..d6e8652e77 100644
--- a/lib/kernel/src/gen_udp.erl
+++ b/lib/kernel/src/gen_udp.erl
@@ -51,6 +51,11 @@
         {reuseaddr,       boolean()} |
         {sndbuf,          non_neg_integer()} |
         {tos,             non_neg_integer()} |
+        {tclass,          non_neg_integer()} |
+        {ttl,             non_neg_integer()} |
+	{recvtos,         boolean()} |
+	{recvtclass,      boolean()} |
+	{recvttl,         boolean()} |
 	{ipv6_v6only,     boolean()}.
 -type option_name() ::
         active |
@@ -76,6 +81,12 @@
         reuseaddr |
         sndbuf |
         tos |
+        tclass |
+        ttl |
+        recvtos |
+        recvtclass |
+        recvttl |
+        pktoptions |
 	ipv6_v6only.
 -type socket() :: port().
 
@@ -147,11 +158,13 @@ send(S, Packet) when is_port(S) ->
     end.
 
 -spec recv(Socket, Length) ->
-                  {ok, {Address, Port, Packet}} | {error, Reason} when
+                  {ok, RecvData} | {error, Reason} when
       Socket :: socket(),
       Length :: non_neg_integer(),
+      RecvData :: {Address, Port, Packet} | {Address, Port, AncData, Packet},
       Address :: inet:ip_address() | inet:returned_non_ip_address(),
       Port :: inet:port_number(),
+      AncData :: inet:ancillary_data(),
       Packet :: string() | binary(),
       Reason :: not_owner | inet:posix().
 
@@ -164,12 +177,14 @@ recv(S,Len) when is_port(S), is_integer(Len) ->
     end.
 
 -spec recv(Socket, Length, Timeout) ->
-                  {ok, {Address, Port, Packet}} | {error, Reason} when
+                  {ok, RecvData} | {error, Reason} when
       Socket :: socket(),
       Length :: non_neg_integer(),
       Timeout :: timeout(),
+      RecvData :: {Address, Port, Packet} | {Address, Port, AncData, Packet},
       Address :: inet:ip_address() | inet:returned_non_ip_address(),
       Port :: inet:port_number(),
+      AncData :: inet:ancillary_data(),
       Packet :: string() | binary(),
       Reason :: not_owner | inet:posix().
 
diff --git a/lib/kernel/src/inet.erl b/lib/kernel/src/inet.erl
index 73c53b9011..5dd68dc285 100644
--- a/lib/kernel/src/inet.erl
+++ b/lib/kernel/src/inet.erl
@@ -76,7 +76,7 @@
 -export_type([address_family/0, socket_protocol/0, hostent/0, hostname/0, ip4_address/0,
               ip6_address/0, ip_address/0, port_number/0,
 	      local_address/0, socket_address/0, returned_non_ip_address/0,
-	      socket_setopt/0, socket_getopt/0,
+	      socket_setopt/0, socket_getopt/0, ancillary_data/0,
 	      posix/0, socket/0, stat_option/0]).
 %% imports
 -import(lists, [append/1, duplicate/2, filter/2, foldl/3]).
@@ -163,6 +163,9 @@
 	'recv_cnt' | 'recv_max' | 'recv_avg' | 'recv_oct' | 'recv_dvi' |
 	'send_cnt' | 'send_max' | 'send_avg' | 'send_oct' | 'send_pend'.
 
+-type ancillary_data() ::
+        [ {'tos', byte()} | {'tclass', byte()} | {'ttl', byte()} ].
+
 %%% ---------------------------------
 
 -spec get_rc() -> [{Par :: atom(), Val :: any()} |
@@ -302,7 +305,7 @@ setopts(Socket, Opts) ->
 	{'ok', OptionValues} | {'error', posix()} when
       Socket :: socket(),
       Options :: [socket_getopt()],
-      OptionValues :: [socket_setopt()].
+      OptionValues :: [socket_setopt() | gen_tcp:pktoptions_value()].
 
 getopts(Socket, Opts) ->
     case prim_inet:getopts(Socket, Opts) of
@@ -722,6 +725,7 @@ stats() ->
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 connect_options() ->
     [tos, tclass, priority, reuseaddr, keepalive, linger, sndbuf, recbuf, nodelay,
+     recvtos, recvtclass, ttl, recvttl,
      header, active, packet, packet_size, buffer, mode, deliver, line_delimiter,
      exit_on_close, high_watermark, low_watermark, high_msgq_watermark,
      low_msgq_watermark, send_timeout, send_timeout_close, delay_send, raw,
@@ -790,6 +794,7 @@ con_add(Name, Val, #connect_opts{} = R, Opts, AllOpts) ->
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 listen_options() ->
     [tos, tclass, priority, reuseaddr, keepalive, linger, sndbuf, recbuf, nodelay,
+     recvtos, recvtclass, ttl, recvttl,
      header, active, packet, buffer, mode, deliver, backlog, ipv6_v6only,
      exit_on_close, high_watermark, low_watermark, high_msgq_watermark,
      low_msgq_watermark, send_timeout, send_timeout_close, delay_send,
@@ -870,7 +875,7 @@ tcp_module_1(Opts, Address) ->
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 udp_options() ->
     [tos, tclass, priority, reuseaddr, sndbuf, recbuf, header, active, buffer, mode,
-     deliver, ipv6_v6only,
+     recvtos, recvtclass, ttl, recvttl, deliver, ipv6_v6only,
      broadcast, dontroute, multicast_if, multicast_ttl, multicast_loop,
      add_membership, drop_membership, read_packets,raw,
      high_msgq_watermark, low_msgq_watermark, bind_to_device].
@@ -940,8 +945,10 @@ udp_module(Opts) ->
 %  (*) passing of open FDs ("fdopen") is not supported.
 sctp_options() ->
 [   % The following are generic inet options supported for SCTP sockets:
-    mode, active, buffer, tos, tclass, priority, dontroute, reuseaddr, linger, sndbuf,
-    recbuf, ipv6_v6only, high_msgq_watermark, low_msgq_watermark,
+    mode, active, buffer, tos, tclass, ttl,
+    priority, dontroute, reuseaddr, linger,
+    recvtos, recvtclass, recvttl,
+    sndbuf, recbuf, ipv6_v6only, high_msgq_watermark, low_msgq_watermark,
     bind_to_device,
 
     % Other options are SCTP-specific (though they may be similar to their
diff --git a/lib/kernel/src/inet6_tcp.erl b/lib/kernel/src/inet6_tcp.erl
index a0d5d3df70..347b8b9a1b 100644
--- a/lib/kernel/src/inet6_tcp.erl
+++ b/lib/kernel/src/inet6_tcp.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2018. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -167,7 +167,7 @@ listen(Port, Opts) ->
 %% Accept
 %%
 accept(L) -> 
-    case prim_inet:accept(L) of
+    case prim_inet:accept(L, accept_family_opts()) of
 	{ok, S} ->
 	    inet_db:register_socket(S, ?MODULE),
 	    {ok,S};
@@ -175,13 +175,15 @@ accept(L) ->
     end.
 
 accept(L, Timeout) ->
-    case prim_inet:accept(L, Timeout) of
+    case prim_inet:accept(L, Timeout, accept_family_opts()) of
 	{ok, S} ->
 	    inet_db:register_socket(S, ?MODULE),
 	    {ok,S};
 	Error -> Error
     end.
 
+accept_family_opts() -> [tclass, recvtclass].
+
 %%
 %% Create a port/socket from a file descriptor 
 %%
diff --git a/lib/kernel/src/inet_int.hrl b/lib/kernel/src/inet_int.hrl
index 357e27826c..c8e09d18ad 100644
--- a/lib/kernel/src/inet_int.hrl
+++ b/lib/kernel/src/inet_int.hrl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2017. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2018. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -157,6 +157,11 @@
 -define(INET_LOPT_LINE_DELIM,     40).
 -define(INET_OPT_TCLASS,          41).
 -define(INET_OPT_BIND_TO_DEVICE,  42).
+-define(INET_OPT_RECVTOS,         43).
+-define(INET_OPT_RECVTCLASS,      44).
+-define(INET_OPT_PKTOPTIONS,      45).
+-define(INET_OPT_TTL,             46).
+-define(INET_OPT_RECVTTL,         47).
 % Specific SCTP options: separate range:
 -define(SCTP_OPT_RTOINFO,	 	100).
 -define(SCTP_OPT_ASSOCINFO,	 	101).
diff --git a/lib/kernel/src/inet_tcp.erl b/lib/kernel/src/inet_tcp.erl
index dac6b3119d..f1e3116856 100644
--- a/lib/kernel/src/inet_tcp.erl
+++ b/lib/kernel/src/inet_tcp.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2018. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -164,7 +164,7 @@ listen(Port, Opts) ->
 %% Accept
 %%
 accept(L) ->
-    case prim_inet:accept(L) of
+    case prim_inet:accept(L, accept_family_opts()) of
 	{ok, S} ->
 	    inet_db:register_socket(S, ?MODULE),
 	    {ok,S};
@@ -172,13 +172,15 @@ accept(L) ->
     end.
 
 accept(L, Timeout) ->
-    case prim_inet:accept(L, Timeout) of
+    case prim_inet:accept(L, Timeout, accept_family_opts()) of
 	{ok, S} ->
 	    inet_db:register_socket(S, ?MODULE),
 	    {ok,S};
 	Error -> Error
     end.
 
+accept_family_opts() -> [tos, ttl, recvtos, recvttl].
+
 %%
 %% Create a port/socket from a file descriptor 
 %%
diff --git a/lib/kernel/test/gen_tcp_misc_SUITE.erl b/lib/kernel/test/gen_tcp_misc_SUITE.erl
index 950f5bea6f..d532537eb9 100644
--- a/lib/kernel/test/gen_tcp_misc_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_misc_SUITE.erl
@@ -41,6 +41,7 @@
 	 busy_send/1, busy_disconnect_passive/1, busy_disconnect_active/1,
 	 fill_sendq/1, partial_recv_and_close/1, 
 	 partial_recv_and_close_2/1,partial_recv_and_close_3/1,so_priority/1,
+         recvtos/1, recvttl/1, recvtosttl/1, recvtclass/1,
 	 %% Accept tests
 	 primitive_accept/1,multi_accept_close_listen/1,accept_timeout/1,
 	 accept_timeouts_in_order/1,accept_timeouts_in_order2/1,
@@ -83,7 +84,8 @@ all() ->
      busy_disconnect_passive, busy_disconnect_active,
      fill_sendq, partial_recv_and_close,
      partial_recv_and_close_2, partial_recv_and_close_3,
-     so_priority, primitive_accept,
+     so_priority, recvtos, recvttl, recvtosttl,
+     recvtclass, primitive_accept,
      multi_accept_close_listen, accept_timeout,
      accept_timeouts_in_order, accept_timeouts_in_order2,
      accept_timeouts_in_order3, accept_timeouts_in_order4,
@@ -1914,6 +1916,209 @@ so_priority(Config) when is_list(Config) ->
 	    end
     end.
 
+
+
+%% IP_RECVTOS and IP_RECVTCLASS for IP_PKTOPTIONS
+%% does not seem to be implemented in Linux until kernel 3.0
+
+recvtos(_Config) ->
+    test_pktoptions(
+      inet, [{recvtos,tos,96}],
+      fun recvtos_ok/2,
+      false).
+
+recvtosttl(_Config) ->
+    test_pktoptions(
+      inet, [{recvtos,tos,96},{recvttl,ttl,33}],
+      fun (OSType, OSVer) ->
+              recvtos_ok(OSType, OSVer) andalso recvttl_ok(OSType, OSVer)
+      end,
+      false).
+
+recvttl(_Config) ->
+    test_pktoptions(
+      inet, [{recvttl,ttl,33}],
+      fun recvttl_ok/2,
+      false).
+
+recvtclass(_Config) ->
+    {ok,IFs} = inet:getifaddrs(),
+    case
+        [Name ||
+            {Name,Opts} <- IFs,
+            lists:member({addr,{0,0,0,0,0,0,0,1}}, Opts)]
+    of
+        [_] ->
+            test_pktoptions(
+              inet6, [{recvtclass,tclass,224}],
+              fun recvtclass_ok/2,
+              true);
+        [] ->
+            {skip,{ipv6_not_supported,IFs}}
+    end.
+
+%% These version numbers are the highest noted in daily tests
+%% where the test fails for a plausible reason, so
+%% skip on that platform.
+%%
+%% On newer versions it might be fixed, but we'll see about that
+%% when machines with newer versions gets installed...
+%% If the test still fails for a plausible reason these
+%% version numbers simply should be increased.
+
+%% Using the option returns einval, so it is not implemented.
+recvtos_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {17,6,0});
+%% Does not return any value - not implemented for pktoptions
+recvtos_ok({unix,linux}, OSVer) -> not semver_lt(OSVer, {3,1,0});
+%%
+recvtos_ok({unix,_}, _) -> true;
+recvtos_ok(_, _) -> false.
+
+recvttl_ok({unix,linux}, _) -> true;
+recvttl_ok({unix,_}, _) -> true;
+recvttl_ok(_, _) -> false.
+
+%% Using the option returns einval, so it is not implemented.
+recvtclass_ok({unix,openbsd}, OSVer) -> not semver_lt(OSVer, {6,4,0});
+recvtclass_ok({unix,freebsd}, OSVer) -> not semver_lt(OSVer, {11,2,0});
+%% Using the option returns einval up to 0.9.0, so it is not implemented.
+%% Does not return any value - not implemented for pktoptions
+recvtclass_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {17,6,0});
+%% Does not return any value - not implemented for pktoptions
+recvtclass_ok({unix,linux}, OSVer) -> not semver_lt(OSVer, {3,1,0});
+%%
+recvtclass_ok({unix,_}, _) -> true;
+recvtclass_ok(_, _) -> false.
+
+semver_lt({X1,Y1,Z1}, {X2,Y2,Z2}) ->
+    if
+        X1 > X2 -> false;
+        X1 < X2 -> true;
+        Y1 > Y2 -> false;
+        Y1 < Y2 -> true;
+        Z1 > Z2 -> false;
+        Z1 < Z2 -> true;
+        true -> false
+    end;
+semver_lt(_, {_,_,_}) -> false.
+
+test_pktoptions(Family, Spec, OSFilter, CheckAccept) ->
+    OSType = os:type(),
+    OSVer = os:version(),
+    case OSFilter(OSType, OSVer) of
+        true ->
+            io:format("Os: ~p, ~p~n", [OSType,OSVer]),
+            test_pktoptions(Family, Spec, CheckAccept, OSType, OSVer);
+        false ->
+            {skip,{not_supported_for_os_version,{OSType,OSVer}}}
+    end.
+%%
+test_pktoptions(Family, Spec, CheckAccept, OSType, OSVer) ->
+    Timeout = 5000,
+    RecvOpts = [RecvOpt || {RecvOpt,_,_} <- Spec],
+    TrueRecvOpts = [{RecvOpt,true} || {RecvOpt,_,_} <- Spec],
+    FalseRecvOpts = [{RecvOpt,false} || {RecvOpt,_,_} <- Spec],
+    Opts = [Opt || {_,Opt,_} <- Spec],
+    OptsVals = [{Opt,Val} || {_,Opt,Val} <- Spec],
+    Address =
+        case Family of
+            inet ->
+                {127,0,0,1};
+            inet6 ->
+                {0,0,0,0,0,0,0,1}
+        end,
+    %%
+    %% Set RecvOpts on listen socket
+    {ok,L} =
+        gen_tcp:listen(
+          0,
+          [Family,binary,{active,false},{send_timeout,Timeout}
+           |TrueRecvOpts]),
+    {ok,P} = inet:port(L),
+    {ok,TrueRecvOpts} = inet:getopts(L, RecvOpts),
+    {ok,OptsValsDefault} = inet:getopts(L, Opts),
+    %%
+    %% Set RecvOpts and Option values on connect socket
+    {ok,S2} =
+        gen_tcp:connect(
+          Address, P,
+          [Family,binary,{active,false},{send_timeout,Timeout}
+           |TrueRecvOpts ++ OptsVals],
+          Timeout),
+    {ok,TrueRecvOpts} = inet:getopts(S2, RecvOpts),
+    {ok,OptsVals} = inet:getopts(S2, Opts),
+    %%
+    %% Accept socket inherits the options from listen socket
+    {ok,S1} = gen_tcp:accept(L, Timeout),
+    {ok,TrueRecvOpts} = inet:getopts(S1, RecvOpts),
+    {ok,OptsValsDefault} = inet:getopts(S1, Opts),
+%%%    %%
+%%%    %% Handshake
+%%%    ok = gen_tcp:send(S1, <<"hello">>),
+%%%    {ok,<<"hello">>} = gen_tcp:recv(S2, 5, Timeout),
+%%%    ok = gen_tcp:send(S2, <<"hi">>),
+%%%    {ok,<<"hi">>} = gen_tcp:recv(S1, 2, Timeout),
+    %%
+    %% Verify returned remote options
+    {ok,[{pktoptions,OptsVals1}]} = inet:getopts(S1, [pktoptions]),
+    {ok,[{pktoptions,OptsVals2}]} = inet:getopts(S2, [pktoptions]),
+    (Result1 = sets_eq(OptsVals1, OptsVals))
+        orelse io:format(
+                 "Accept differs: ~p neq ~p~n", [OptsVals1,OptsVals]),
+    (Result2 = sets_eq(OptsVals2, OptsValsDefault))
+        orelse io:format(
+                 "Connect differs: ~p neq ~p~n",
+                 [OptsVals2,OptsValsDefault]),
+    %%
+    ok = gen_tcp:close(S2),
+    ok = gen_tcp:close(S1),
+    %%
+    %%
+    %% Clear RecvOpts on listen socket and set Option values
+    ok = inet:setopts(L, FalseRecvOpts ++ OptsVals),
+    {ok,FalseRecvOpts} = inet:getopts(L, RecvOpts),
+    {ok,OptsVals} = inet:getopts(L, Opts),
+    %%
+    %% Set RecvOpts on connecting socket
+    %%
+    {ok,S4} =
+        gen_tcp:connect(
+          Address, P,
+          [Family,binary,{active,false},{send_timeout,Timeout}
+          |TrueRecvOpts],
+          Timeout),
+    {ok,TrueRecvOpts} = inet:getopts(S4, RecvOpts),
+    {ok,OptsValsDefault} = inet:getopts(S4, Opts),
+    %%
+    %% Accept socket inherits the options from listen socket
+    {ok,S3} = gen_tcp:accept(L, Timeout),
+    {ok,FalseRecvOpts} = inet:getopts(S3, RecvOpts),
+    {ok,OptsVals} = inet:getopts(S3, Opts),
+    %%
+    %% Verify returned remote options
+    {ok,[{pktoptions,[]}]} = inet:getopts(S3, [pktoptions]),
+    {ok,[{pktoptions,OptsVals4}]} = inet:getopts(S4, [pktoptions]),
+    (Result3 = sets_eq(OptsVals4, OptsVals))
+        orelse io:format(
+                 "Accept2 differs: ~p neq ~p~n", [OptsVals4,OptsVals]),
+    %%
+    ok = gen_tcp:close(S4),
+    ok = gen_tcp:close(S3),
+    ok = gen_tcp:close(L),
+    (Result1 and ((not CheckAccept) or (Result2 and Result3)))
+        orelse
+        exit({failed,
+              [{OptsVals1,OptsVals4,OptsVals},
+               {OptsVals2,OptsValsDefault}],
+              {OSType,OSVer}}),
+%%    exit({{OSType,OSVer},success}), % In search for the truth
+    ok.
+
+sets_eq(L1, L2) ->
+    lists:sort(L1) == lists:sort(L2).
+
+
+
 %% Accept test utilities (suites are below)
 
 millis() ->
@@ -2205,7 +2410,7 @@ wait_until_accepting(Proc,0) ->
     exit({timeout_waiting_for_accepting,Proc});
 wait_until_accepting(Proc,N) ->
     case process_info(Proc,current_function) of
-        {current_function,{prim_inet,accept0,2}} ->
+        {current_function,{prim_inet,accept0,3}} ->
             case process_info(Proc,status) of
                 {status,waiting} -> 
                     ok;
diff --git a/lib/kernel/test/gen_udp_SUITE.erl b/lib/kernel/test/gen_udp_SUITE.erl
index 3acfff929e..878e48786c 100644
--- a/lib/kernel/test/gen_udp_SUITE.erl
+++ b/lib/kernel/test/gen_udp_SUITE.erl
@@ -36,6 +36,7 @@
 -export([send_to_closed/1, active_n/1,
 	 buffer_size/1, binary_passive_recv/1, max_buffer_size/1, bad_address/1,
 	 read_packets/1, open_fd/1, connect/1, implicit_inet6/1,
+         recvtos/1, recvtosttl/1, recvttl/1, recvtclass/1,
 	 local_basic/1, local_unbound/1,
 	 local_fdopen/1, local_fdopen_unbound/1, local_abstract/1]).
 
@@ -47,6 +48,7 @@ all() ->
     [send_to_closed, buffer_size, binary_passive_recv, max_buffer_size,
      bad_address, read_packets, open_fd, connect,
      implicit_inet6, active_n,
+     recvtos, recvtosttl, recvttl, recvtclass,
      {group, local}].
 
 groups() -> 
@@ -572,6 +574,167 @@ active_n(Config) when is_list(Config) ->
     ok.
 
 
+
+recvtos(_Config) ->
+    test_recv_opts(
+      inet, [{recvtos,tos,96}],
+      fun recvtos_ok/2).
+
+recvtosttl(_Config) ->
+    test_recv_opts(
+      inet, [{recvtos,tos,96},{recvttl,ttl,33}],
+      fun (OSType, OSVer) ->
+              recvtos_ok(OSType, OSVer) andalso recvttl_ok(OSType, OSVer)
+      end).
+
+recvttl(_Config) ->
+    test_recv_opts(
+      inet, [{recvttl,ttl,33}],
+      fun recvttl_ok/2).
+
+recvtclass(_Config) ->
+    {ok,IFs} = inet:getifaddrs(),
+    case
+        [Name ||
+            {Name,Opts} <- IFs,
+            lists:member({addr,{0,0,0,0,0,0,0,1}}, Opts)]
+    of
+        [_] ->
+            test_recv_opts(
+              inet6, [{recvtclass,tclass,224}],
+              fun recvtclass_ok/2);
+        [] ->
+            {skip,ipv6_not_supported,IFs}
+    end.
+
+%% These version numbers are just above the highest noted in daily tests
+%% where the test fails for a plausible reason, that is the lowest
+%% where we can expect that the test mighe succeed, so
+%% skip on platforms lower than this.
+%%
+%% On newer versions it might be fixed, but we'll see about that
+%% when machines with newer versions gets installed...
+%% If the test still fails for a plausible reason these
+%% version numbers simply should be increased.
+
+%% Using the option returns einval, so it is not implemented.
+recvtos_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {17,6,0});
+%% Using the option returns einval, so it is not implemented.
+recvtos_ok({unix,openbsd}, OSVer) -> not semver_lt(OSVer, {6,4,0});
+%% Using the option returns einval, so it is not implemented.
+recvtos_ok({unix,sunos}, OSVer) -> not semver_lt(OSVer, {5,11,0});
+%%
+recvtos_ok({unix,_}, _) -> true;
+recvtos_ok(_, _) -> false.
+
+recvttl_ok({unix,_}, _) -> true;
+recvttl_ok(_, _) -> false.
+
+%% Using the option returns einval, so it is not implemented.
+recvtclass_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {9,9,0});
+recvtclass_ok({unix,linux}, OSVer) -> not semver_lt(OSVer, {2,6,11});
+%%
+recvtclass_ok({unix,_}, _) -> true;
+recvtclass_ok(_, _) -> false.
+
+semver_lt({X1,Y1,Z1}, {X2,Y2,Z2}) ->
+    if
+        X1 > X2 -> false;
+        X1 < X2 -> true;
+        Y1 > Y2 -> false;
+        Y1 < Y2 -> true;
+        Z1 > Z2 -> false;
+        Z1 < Z2 -> true;
+        true -> false
+    end;
+semver_lt(_, {_,_,_}) -> false.
+
+test_recv_opts(Family, Spec, OSFilter) ->
+    OSType = os:type(),
+    OSVer = os:version(),
+    case OSFilter(OSType, OSVer) of
+        true ->
+            io:format("Os: ~p, ~p~n", [OSType,OSVer]),
+            test_recv_opts(Family, Spec, OSType, OSVer);
+        false ->
+            {skip,{not_supported_for_os_version,{OSType,OSVer}}}
+    end.
+%%
+test_recv_opts(Family, Spec, _OSType, _OSVer) ->
+    Timeout = 5000,
+    RecvOpts = [RecvOpt || {RecvOpt,_,_} <- Spec],
+    TrueRecvOpts = [{RecvOpt,true} || {RecvOpt,_,_} <- Spec],
+    FalseRecvOpts = [{RecvOpt,false} || {RecvOpt,_,_} <- Spec],
+    Opts = [Opt || {_,Opt,_} <- Spec],
+    OptsVals = [{Opt,Val} || {_,Opt,Val} <- Spec],
+    TrueRecvOpts_OptsVals = TrueRecvOpts ++ OptsVals,
+    Addr =
+        case Family of
+            inet ->
+                {127,0,0,1};
+            inet6 ->
+                {0,0,0,0,0,0,0,1}
+        end,
+    %%
+    {ok,S1} =
+        gen_udp:open(0, [Family,binary,{active,false}|TrueRecvOpts]),
+    {ok,P1} = inet:port(S1),
+    {ok,TrueRecvOpts} = inet:getopts(S1, RecvOpts),
+    ok = inet:setopts(S1, FalseRecvOpts),
+    {ok,FalseRecvOpts} = inet:getopts(S1, RecvOpts),
+    ok = inet:setopts(S1, TrueRecvOpts_OptsVals),
+    {ok,TrueRecvOpts_OptsVals} = inet:getopts(S1, RecvOpts ++ Opts),
+    %%
+    {ok,S2} =
+        gen_udp:open(0, [Family,binary,{active,true}|FalseRecvOpts]),
+    {ok,P2} = inet:port(S2),
+    {ok,FalseRecvOpts_OptsVals2} = inet:getopts(S2, RecvOpts ++ Opts),
+    OptsVals2 = FalseRecvOpts_OptsVals2 -- FalseRecvOpts,
+    %%
+    ok = gen_udp:send(S2, Addr, P1, <<"abcde">>),
+    ok = gen_udp:send(S1, Addr, P2, <<"fghij">>),
+    {ok,{_,P2,OptsVals3,<<"abcde">>}} = gen_udp:recv(S1, 0, Timeout),
+    verify_sets_eq(OptsVals3, OptsVals2),
+    receive
+        {udp,S2,_,P1,<<"fghij">>} ->
+            ok;
+        Other1 ->
+            exit({unexpected,Other1})
+    after Timeout ->
+            exit(timeout)
+    end,
+    %%
+    ok = inet:setopts(S1, FalseRecvOpts),
+    {ok,FalseRecvOpts} = inet:getopts(S1, RecvOpts),
+    ok = inet:setopts(S2, TrueRecvOpts),
+    {ok,TrueRecvOpts} = inet:getopts(S2, RecvOpts),
+    %%
+    ok = gen_udp:send(S2, Addr, P1, <<"klmno">>),
+    ok = gen_udp:send(S1, Addr, P2, <<"pqrst">>),
+    {ok,{_,P2,<<"klmno">>}} = gen_udp:recv(S1, 0, Timeout),
+    receive
+        {udp,S2,_,P1,OptsVals4,<<"pqrst">>} ->
+            verify_sets_eq(OptsVals4, OptsVals);
+        Other2 ->
+            exit({unexpected,Other2})
+    after Timeout ->
+            exit(timeout)
+    end,
+    ok = gen_udp:close(S1),
+    ok = gen_udp:close(S2),
+%%    exit({{OSType,OSVer},success}), % In search for the truth
+    ok.
+
+verify_sets_eq(L1, L2) ->
+    L = lists:sort(L1),
+    case lists:sort(L2) of
+        L ->
+            ok;
+        _ ->
+            exit({sets_neq,L1,L2})
+    end.
+
+
 local_basic(_Config) ->
     SFile = local_filename(server),
     SAddr = {local,bin_filename(SFile)},
diff --git a/lib/snmp/doc/src/notes.xml b/lib/snmp/doc/src/notes.xml
index f64e0cca97..1607363ad1 100644
--- a/lib/snmp/doc/src/notes.xml
+++ b/lib/snmp/doc/src/notes.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>1996</year><year>2017</year>
+      <year>1996</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -48,7 +48,7 @@
       </list>
     </section>
 
-</section>
+  </section>
 
 <section><title>SNMP 5.2.10</title>
 
diff --git a/lib/snmp/doc/src/snmp.xml b/lib/snmp/doc/src/snmp.xml
index 801193675c..480ed2e825 100644
--- a/lib/snmp/doc/src/snmp.xml
+++ b/lib/snmp/doc/src/snmp.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>1996</year><year>2016</year>
+      <year>1996</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -341,10 +341,10 @@
     </func>
 
     <func>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile) ->  ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Block | Stop) -> ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop, Block) -> ok | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Block | Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop, Block) -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -355,6 +355,9 @@
         <v>LogFile = string()</v>
         <v>Start = Stop = null | datetime() | {local_time,datetime()} |  {universal_time,datetime()} </v>
         <v>Block = boolean()</v>
+        <v>Cnt = {NumOK, NumERR}</v>
+        <v>NumOK = non_neg_integer()</v>
+        <v>NumERR = pos_integer()</v>
         <v>Reason = term()</v>
       </type>
       <desc>
@@ -394,16 +397,25 @@
 	and <c>Vsn</c> is the SNMP version. <c>PDU</c> is a textual
 	version of the protocol data unit. There is a new line
 	between <c>Vsn</c> and <c>PDU</c>.</p>
+
+	<p>If the entire log is successfully converted, the function 
+	will return <c>ok</c>. 
+	If one of more entries fail to convert, the function will instead
+	return <c>{ok, {NumOK, NumERR}}</c>, where the counters indicate
+	how many valid and erroneous entries where found. 
+	If instead <c>{error, Reason}</c> is returned, the conversion 
+	encountered a fatal error and where either never done of aborted
+	midway. </p>
 	
         <marker id="log_to_io"></marker>
       </desc>
     </func>
 
     <func>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile) ->  ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) ->  ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Block | Stop) -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop, Block) -> ok | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Block | Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop, Block) -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -412,6 +424,9 @@
         <v>LogName = string()</v>
         <v>LogFile = string()</v>
         <v>Start = Stop = null | datetime() | {local_time,datetime()} |  {universal_time,datetime()} </v>
+        <v>Cnt = {NumOK, NumERR}</v>
+        <v>NumOK = non_neg_integer()</v>
+        <v>NumERR = pos_integer()</v>
         <v>Reason = term()</v>
       </type>
       <desc>
diff --git a/lib/snmp/doc/src/snmpa.xml b/lib/snmp/doc/src/snmpa.xml
index d756ff7a65..b78f14da01 100644
--- a/lib/snmp/doc/src/snmpa.xml
+++ b/lib/snmp/doc/src/snmpa.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>2004</year><year>2016</year>
+      <year>2004</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -559,13 +559,13 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     <func>
       <name>log_to_txt(LogDir)</name>
       <name>log_to_txt(LogDir, Block | Mibs)</name>
-      <name>log_to_txt(LogDir, Mibs, Block | OutFile) -> ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, Block | LogName) ->  ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, Block | LogFile) ->  ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start)  -> ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop)  -> ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop)  -> ok | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, Block | OutFile) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, Block | LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -576,6 +576,9 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
         <v>LogName = string()</v>
         <v>LogFile = string()</v>
         <v>Start = Stop = null | calendar:datetime() | {local_time, calendar:datetime()} | {universal_time, calendar:datetime()} </v>
+        <v>Cnt = {NumOK, NumERR}</v>
+        <v>NumOK = non_neg_integer()</v>
+        <v>NumERR = pos_integer()</v>
         <v>Reason = disk_log_open_error() | file_open_error() | term()</v>
         <v>disk_log_open_error() = {LogName, term()}</v>
         <v>file_open_error() = {OutFile, term()}</v>
@@ -597,14 +600,14 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
     </func>
 
     <func>
-      <name>log_to_io(LogDir) ->  ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Block | Mibs) ->  ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, Block | LogName) ->  ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, Block | LogFile) -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start) -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop) -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop) -> ok | {error, Reason}</name>
+      <name>log_to_io(LogDir) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Block | Mibs) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, Block | LogFile) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop) -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -614,6 +617,9 @@ notification_delivery_info() = #snmpa_notification_delivery_info{}
         <v>LogName = string()</v>
         <v>LogFile = string()</v>
         <v>Start = Stop = null | calendar:datetime() | {local_time, calendar:datetime()} | {universal_time, calendar:datetime()} </v>
+        <v>Cnt = {NumOK, NumERR}</v>
+        <v>NumOK = non_neg_integer()</v>
+        <v>NumERR = pos_integer()</v>
         <v>Reason = disk_log_open_error() | file_open_error() | term()</v>
         <v>disk_log_open_error() = {LogName, term()}</v>
         <v>file_open_error() = {OutFile, term()}</v>
diff --git a/lib/snmp/doc/src/snmpm.xml b/lib/snmp/doc/src/snmpm.xml
index 4818aeb697..be4cd58a1a 100644
--- a/lib/snmp/doc/src/snmpm.xml
+++ b/lib/snmp/doc/src/snmpm.xml
@@ -4,7 +4,7 @@
 <erlref>
   <header>
     <copyright>
-      <year>2004</year><year>2016</year>
+      <year>2004</year><year>2018</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -1216,13 +1216,13 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     <func>
       <name>log_to_txt(LogDir)</name>
       <name>log_to_txt(LogDir, Block | Mibs)</name>
-      <name>log_to_txt(LogDir, Mibs, Block | OutFile) -> ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, Block | LogName) ->  ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, Block | LogFile) ->  ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start)  -> ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop)  -> ok | {error, Reason}</name>
-      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop)  -> ok | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, Block | OutFile) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, Block | LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_txt(LogDir, Mibs, OutFile, LogName, LogFile, Block, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -1233,6 +1233,9 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
         <v>LogName = string()</v>
         <v>LogFile = string()</v>
         <v>Start = Stop = null | calendar:datetime() | {local_time, calendar:datetime()} | {universal_time, calendar:datetime()} </v>
+        <v>Cnt = {NumOK, NumERR}</v>
+        <v>NumOK = non_neg_integer()</v>
+        <v>NumERR = pos_integer()</v>
         <v>Reason = disk_log_open_error() | file_open_error() | term()</v>
         <v>disk_log_open_error() = {LogName, term()}</v>
         <v>file_open_error() = {OutFile, term()}</v>
@@ -1254,15 +1257,15 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
     </func>
 
     <func>
-      <name>log_to_io(LogDir) -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Block | Mibs) -> ok | {error, Reason}</name>
+      <name>log_to_io(LogDir) -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Block | Mibs) -> ok | {ok, Cnt} | {error, Reason}</name>
       <name>log_to_io(LogDir, Mibs) -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, Block | LogName) ->  ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, Block | LogFile) ->  ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) ->  ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start)  -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop)  -> ok | {error, Reason}</name>
-      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop)  -> ok | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, Block | LogName) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, Block | LogFile) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block | Start) ->  ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
+      <name>log_to_io(LogDir, Mibs, LogName, LogFile, Block, Start, Stop)  -> ok | {ok, Cnt} | {error, Reason}</name>
       <fsummary>Convert an Audit Trail Log to text format</fsummary>
       <type>
         <v>LogDir = string()</v>
@@ -1272,6 +1275,9 @@ priv_key = [integer()]   (length is 16 if priv = usmDESPrivProtocol | usmAesCfb1
         <v>LogName = string()</v>
         <v>LogFile = string()</v>
         <v>Start = Stop = null | calendar:datetime() | {local_time, calendar:datetime()} | {universal_time, calendar:datetime()} </v>
+        <v>Cnt = {NumOK, NumERR}</v>
+        <v>NumOK = non_neg_integer()</v>
+        <v>NumERR = pos_integer()</v>
         <v>Reason = disk_log_open_error() | file_open_error() | term()</v>
         <v>disk_log_open_error() = {LogName, term()}</v>
         <v>file_open_error() = {OutFile, term()}</v>
diff --git a/lib/snmp/src/agent/snmpa_net_if.erl b/lib/snmp/src/agent/snmpa_net_if.erl
index ecf9498ca9..afed4482d2 100644
--- a/lib/snmp/src/agent/snmpa_net_if.erl
+++ b/lib/snmp/src/agent/snmpa_net_if.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2004-2015. All Rights Reserved.
+%% Copyright Ericsson AB 2004-2018. All Rights Reserved.
 %% 
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -137,11 +137,10 @@ init(Prio, NoteStore, MasterAgent, Parent, Opts) ->
 	    proc_lib:init_ack({ok, self()}),
 	    try loop(State)
 	    catch
-		C:E when C =/= exit, E =/= shutdown ->
+		C:E:S when C =/= exit, E =/= shutdown ->
 		    Fmt =
 			"loop/1 EXCEPTION ~w:~w~n"
 			"   ~p",
-		    S = erlang:get_stacktrace(),
 		    case C of
 			exit ->
 			    %% Externally killed, root cause is elsewhere
@@ -647,10 +646,10 @@ maybe_handle_recv(
     case
 	try FilterMod:accept_recv(From_1, From_2)
 	catch
-	    Class:Exception ->
+	    Class:Exception:StackTrace ->
 		error_msg(
 		  "FilterMod:accept_recv(~p, ~p) crashed: ~w:~w~n    ~p",
-		  [From_1,From_2,Class,Exception,erlang:get_stacktrace()]),
+		  [From_1, From_2, Class, Exception, StackTrace]),
 		true
 	end
     of
@@ -753,12 +752,11 @@ maybe_handle_recv_pdu(
     case
 	try FilterMod:accept_recv_pdu(From_1, From_2, Type)
 	catch
-	    Class:Exception ->
+	    Class:Exception:StackTrace ->
 		error_msg(
 		  "FilterMod:accept_recv_pdu(~p, ~p, ~p) crashed: ~w:~w~n"
 		  "    ~p",
-		  [From_1,From_2,Type,Class,Exception,
-		   erlang:get_stacktrace()]),
+		  [From_1, From_2, Type, Class, Exception, StackTrace]),
 		true
 	end
     of
@@ -834,11 +832,10 @@ maybe_handle_reply_pdu(
 	try
 	    FilterMod:accept_send_pdu(Addresses, Type)
 	catch
-	    Class:Exception ->
+	    Class:Exception:StackTrace ->
 		error_msg(
 		  "FilterMod:accept_send_pdu(~p, ~p) crashed: ~w:~w~n    ~p",
-		  [Addresses, Type, Class, Exception,
-		   erlang:get_stacktrace()]),
+		  [Addresses, Type, Class, Exception, StackTrace]),
 		true
 	end
     of
@@ -872,7 +869,7 @@ handle_reply_pdu(
 						ACMData, LogF)) of
 	{ok, Packet} ->
 	    ?vinfo("time in agent: ~w mysec", [time_in_agent()]),
-	    try maybe_udp_send(S, Transport, To, Packet)
+	    try maybe_udp_send_wo_log(S, Transport, To, Packet)
 	    catch
 		{Reason, Sz} ->
 		    error_msg("Cannot send message "
@@ -917,11 +914,10 @@ maybe_handle_send_pdu(
     case
 	try FilterMod:accept_send_pdu(AddressesToFilter, Type)
 	catch
-	    Class:Exception ->
+	    Class:Exception:StackTrace ->
 		error_msg(
 		  "FilterMod:accept_send_pdu(~p, ~p) crashed: ~w:~w~n    ~p",
-		  [AddressesToFilter,Type,
-		   Class,Exception,erlang:get_stacktrace()]),
+		  [AddressesToFilter, Type, Class, Exception, StackTrace]),
 		true
 	end
     of
@@ -1049,46 +1045,36 @@ do_handle_send_pdu(S, Type, Pdu, Addresses) ->
 	      [Sz, Reason, Pdu])
     end.
 
-do_handle_send_pdu1(
-  #state{transports = Transports} = S,
-  Type, Addresses) ->
+do_handle_send_pdu1(S, Type, Addresses) ->
     lists:foreach(
-      fun ({Domain, Address, Packet}) when is_binary(Packet) ->
-	      ?vdebug(
-		 "[~w] sending packet:~n"
-		 "   size: ~p~n"
-		 "   to:   ~p", [Domain, sz(Packet), Address]),
-	      To = {Domain, Address},
-	      case select_transport_from_domain(Domain, Transports) of
-		  false ->
-		      error_msg(
-			"Can not find transport~n"
-			"   size:   ~p~n"
-			"   to:     ~s",
-			[sz(Packet), format_address(To)]);
-		  Transport ->
-		      maybe_udp_send(S, Transport, To, Packet)
-	      end;
-	  ({Domain, Address, {Packet, LogData}}) when is_binary(Packet) ->
-	      ?vdebug(
-		 "[~w] sending encrypted packet:~n"
-		 "   size: ~p~n"
-		 "   to:   ~p", [Domain, sz(Packet), Address]),
-	      To = {Domain, Address},
-	      case select_transport_from_domain(Domain, Transports) of
-		  false ->
-		      error_msg(
-			"Can not find transport~n"
-			"   size:   ~p~n"
-			"   to:     ~s",
-			[sz(Packet), format_address(To)]);
-		  Transport ->
-		      maybe_udp_send(S, Transport, To, Packet, Type, LogData)
-	      end
+      fun ({Domain, Address, Pkg}) when is_binary(Pkg) ->
+	      do_handle_send_pdu2(S, Type, Domain, Address,
+                                  Pkg, Pkg, "");
+	  ({Domain, Address, {Pkg, LogPkg}}) when is_binary(Pkg) ->
+	      do_handle_send_pdu2(S, Type, Domain, Address,
+                                  Pkg, LogPkg, " encrypted")
       end,
       Addresses).
 
-maybe_udp_send(
+do_handle_send_pdu2(#state{transports = Transports} = S,
+                    Type, Domain, Address, Pkg, LogPkg, EncrStr) ->
+    ?vdebug("[~w] sending~s packet:"
+            "~n   size: ~p"
+            "~n   to:   ~p", [Domain, EncrStr, sz(Pkg), Address]),
+    To = {Domain, Address},
+    case select_transport_from_domain(Domain, Transports) of
+	false ->
+	    error_msg("Can not find transport: "
+                      "~n   size: ~p"
+                      "~n   to:   ~s",
+                      [sz(Pkg), format_address(To)]);
+	Transport ->
+	    maybe_udp_send_w_log(S, Transport, To, Pkg, LogPkg, Type)
+    end.
+
+
+%% This function is used when logging has already been done!
+maybe_udp_send_wo_log(
   #state{filter = FilterMod, transports = Transports},
   #transport{socket = Socket},
   To, Packet) ->
@@ -1096,10 +1082,10 @@ maybe_udp_send(
     case
 	try FilterMod:accept_send(To_1, To_2)
 	catch
-	    Class:Exception ->
+	    Class:Exception:StackTrace ->
 		error_msg(
 		  "FilterMod:accept_send(~p, ~p) crashed: ~w:~w~n    ~p",
-		  [To_1,To_2,Class,Exception,erlang:get_stacktrace()]),
+		  [To_1, To_2, Class, Exception, StackTrace]),
 		true
 	end
     of
@@ -1118,18 +1104,18 @@ maybe_udp_send(
 	    udp_send(Socket, To, Packet)
     end.
 
-maybe_udp_send(
+maybe_udp_send_w_log(
   #state{log = Log, filter = FilterMod, transports = Transports},
   #transport{socket = Socket},
-  To, Packet, Type, _LogData) ->
+  To, Pkg, LogPkg, Type) ->
     {To_1, To_2} = fix_filter_address(Transports, To),
     case
 	try FilterMod:accept_send(To_1, To_2)
 	catch
-	    Class:Exception ->
+	    Class:Exception:StackTrace ->
 		error_msg(
 		  "FilterMod:accept_send(~p, ~p) crashed for: ~w:~w~n    ~p",
-		  [To_1, To_2, Class, Exception, erlang:get_stacktrace()]),
+		  [To_1, To_2, Class, Exception, StackTrace]),
 		true
 	end
     of
@@ -1143,10 +1129,10 @@ maybe_udp_send(
 		_ ->
 		    error_msg(
 		      "FilterMod:accept_send(~p, ~p) returned: ~p",
-		      [To_1,To_2,Other])
+		      [To_1, To_2, Other])
 	    end,
-	    log(Log, Type, Packet, To),
-	    udp_send(Socket, To, Packet)
+	    log(Log, Type, LogPkg, To),
+	    udp_send(Socket, To, Pkg)
     end.
 
 udp_send(Socket, To, B) ->
@@ -1168,11 +1154,10 @@ udp_send(Socket, To, B) ->
 	ok ->
 	    ok
     catch
-	error:ExitReason ->
+	error:ExitReason:StackTrace ->
 	    error_msg("[exit] cannot send message "
 		      "(destination: ~p:~p, size: ~p, reason: ~p, at: ~p)",
-		      [IpAddr, IpPort, sz(B), ExitReason,
-		       erlang:get_stacktrace()])
+		      [IpAddr, IpPort, sz(B), ExitReason, StackTrace])
     end.
 
 sz(L) when is_list(L) -> length(L);
diff --git a/lib/snmp/src/misc/snmp_log.erl b/lib/snmp/src/misc/snmp_log.erl
index 767d801eee..5713c14912 100644
--- a/lib/snmp/src/misc/snmp_log.erl
+++ b/lib/snmp/src/misc/snmp_log.erl
@@ -1,7 +1,7 @@
 %% 
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2016. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2018. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -649,13 +649,14 @@ do_log_to_file(Log, TextFile, Mibs, Start, Stop) ->
             MiniMib = snmp_mini_mib:create(Mibs),
 	    Write = fun(X) -> 
 			    case format_msg(X, MiniMib, Start, Stop) of
-				{ok, S} ->
-				    io:format(Fd, "~s", [S]);
-				_ ->
-				    ok
+                                {Tag, S} when (Tag =:= ok) orelse (Tag =:= error) ->
+				    io:format(Fd, "~s", [S]),
+                                    Tag;
+				Ignore ->
+				    Ignore
 			    end
 		    end,
-            Res = (catch loop(disk_log:chunk(Log, start), Log, Write)),
+            Res = (catch loop(Log, Write)),
 	    snmp_mini_mib:delete(MiniMib), 
             file:close(Fd),
             Res;
@@ -668,39 +669,63 @@ do_log_to_io(Log, Mibs, Start, Stop) ->
     MiniMib = snmp_mini_mib:create(Mibs),
     Write = fun(X) -> 
 		    case format_msg(X, MiniMib, Start, Stop) of
-			{ok, S} ->
-			    io:format("~s", [S]);
-			_ ->
-			    ok
+			{Tag, S} when (Tag =:= ok) orelse (Tag =:= error) ->
+			    io:format("~s", [S]),
+                            Tag;
+			X ->
+			    X
 		    end
 	    end,
-    (catch loop(disk_log:chunk(Log, start), Log, Write)),
+    Res = (catch loop(Log, Write)),
     snmp_mini_mib:delete(MiniMib),
-    ok.
+    Res.
+
 
+loop(Log, Write) ->
+    loop(disk_log:chunk(Log, start), Log, Write, 0, 0).
 
-loop(eof, _Log, _Write) ->
+loop(eof, _Log, _Write, _NumOK, 0 = _NumERR) ->
     ok;
-loop({error, _} = Error, _Log, _Write) ->
+loop(eof, _Log, _Write, NumOK, NumERR) ->
+    {ok, {NumOK, NumERR}};
+loop({error, _} = Error, _Log, _Write, _NumOK, _NumERR) ->
     Error;
-loop({Cont, Terms}, Log, Write) ->
-    case (catch lists:foreach(Write, Terms)) of
-	{'EXIT', Reason} ->
-	    {error, Reason};
-	_ ->
-	    loop(disk_log:chunk(Log, Cont), Log, Write)
+loop({Cont, Terms}, Log, Write, NumOK, NumERR) ->
+    try loop_terms(Terms, Write) of
+        {ok, {AddedOK, AddedERR}} ->
+            loop(disk_log:chunk(Log, Cont), Log, Write,
+                 NumOK+AddedOK, NumERR+AddedERR)
+    catch
+        C:E:S ->
+            {error, {C, E, S}}
     end;
-loop({Cont, Terms, BadBytes}, Log, Write) ->
+loop({Cont, Terms, BadBytes}, Log, Write, NumOK, NumERR) ->
     error_logger:error_msg("Skipping ~w bytes while converting ~p~n~n", 
 			   [BadBytes, Log]),
-    case (catch lists:foreach(Write, Terms)) of
-	{'EXIT', Reason} ->
-	    {error, Reason};
-	_ ->
-	    loop(disk_log:chunk(Log, Cont), Log, Write)
-    end;
-loop(Error, _Log, _Write) ->
-    Error.
+    try loop_terms(Terms, Write) of
+        {ok, {AddedOK, AddedERR}} ->
+            loop(disk_log:chunk(Log, Cont), Log, Write,
+                 NumOK+AddedOK, NumERR+AddedERR)
+    catch
+        C:E:S ->
+            {error, {C, E, S}}
+    end.
+
+
+loop_terms(Terms, Write) ->
+    loop_terms(Terms, Write, 0, 0).
+
+loop_terms([], _Write, NumOK, NumERR) ->
+    {ok, {NumOK, NumERR}};
+loop_terms([Term|Terms], Write, NumOK, NumERR) ->
+    case Write(Term) of
+        ok ->
+            loop_terms(Terms, Write, NumOK+1, NumERR);
+        error ->
+            loop_terms(Terms, Write, NumOK,   NumERR+1);
+        _ ->
+            loop_terms(Terms, Write, NumOK,   NumERR)
+    end.
 
 
 format_msg(Entry, Mib, Start, Stop) ->
@@ -733,88 +758,149 @@ do_format_msg({Timestamp, SeqNo, Packet, Ip, Port}, Mib) ->
 
 %% This is crap...
 do_format_msg(_, _) ->
-    format_tab("** unknown entry in log file\n\n", []).
+    {error, format_tab("** unknown entry in log file\n\n", [])}.
 
 do_format_msg(TimeStamp, {V3Hdr, ScopedPdu}, AddrStr, Mib) ->
-    case (catch snmp_pdus:dec_scoped_pdu(ScopedPdu)) of
+    try snmp_pdus:dec_scoped_pdu(ScopedPdu) of
 	ScopedPDU when is_record(ScopedPDU, scopedPdu) -> 
 	    Msg = #message{version = 'version-3',
 			   vsn_hdr = V3Hdr,
 			   data    = ScopedPDU},
-	    f(ts2str(TimeStamp), "", Msg, AddrStr, Mib);
-	{'EXIT', Reason} ->
-	    format_tab(
-	      "** error in log file at ~s from ~s ~p\n\n",
-	      [ts2str(TimeStamp), AddrStr, Reason])
+	    try f(ts2str(TimeStamp), "", Msg, AddrStr, Mib) of
+                {ok, _} = OK ->
+                    OK
+            catch
+                FormatT:FormatE ->
+                    format_error("format scoped pdu",
+                                 TimeStamp, AddrStr, FormatT, FormatE)
+            end
+    catch
+        DecT:DecE ->
+            format_error("decode scoped pdu", 
+                         TimeStamp, AddrStr, DecT, DecE)
     end;
 do_format_msg(TimeStamp, Packet, AddrStr, Mib) ->
-    case (catch snmp_pdus:dec_message(binary_to_list(Packet))) of
+    try snmp_pdus:dec_message(binary_to_list(Packet)) of
 	Msg when is_record(Msg, message) ->
-	    f(ts2str(TimeStamp), "", Msg, AddrStr, Mib);
-	{'EXIT', Reason} ->
-	    format_tab("** error in log file ~p\n\n", [Reason])
+	    try f(ts2str(TimeStamp), "", Msg, AddrStr, Mib) of
+                {ok, _} = OK ->
+                    OK
+            catch
+                FormatT:FormatE ->
+                    %% Provide info about the message
+                    Extra = 
+                        case Msg#message.version of
+                            'version-3' ->
+                                #v3_hdr{msgID            = ID,
+                                        msgFlags         = Flags,
+                                        msgSecurityModel = SecModel} = 
+                                    Msg#message.vsn_hdr,
+                                SecLevel = snmp_misc:get_sec_level(Flags),
+                                f("msg-id: ~w, sec-level: ~w, sec-model: ~w", 
+                                  [ID, SecLevel, sm2atom(SecModel)]);
+                            _ -> %% Community
+                                f("community: ~s", [Msg#message.vsn_hdr])
+                        end,
+                    format_error(f("format ~p message; ~s", 
+                                   [Msg#message.version, Extra]),
+                                 TimeStamp, AddrStr, FormatT, FormatE)
+            end
+    catch
+        DecT:DecE ->
+            format_error("decode message", 
+                         TimeStamp, AddrStr, DecT, DecE)
+
     end.
-    
+
+sm2atom(?SEC_ANY) -> any;
+sm2atom(?SEC_V1)  -> v1;
+sm2atom(?SEC_V2C) -> v2c;
+sm2atom(?SEC_USM) -> usm;
+sm2atom(_)        -> unknown.
+
 do_format_msg(TimeStamp, SeqNo, {V3Hdr, ScopedPdu}, AddrStr, Mib) ->
-    case (catch snmp_pdus:dec_scoped_pdu(ScopedPdu)) of
+    try snmp_pdus:dec_scoped_pdu(ScopedPdu) of
 	ScopedPDU when is_record(ScopedPDU, scopedPdu) -> 
 	    Msg = #message{version = 'version-3',
 			   vsn_hdr = V3Hdr,
 			   data    = ScopedPDU},
-	    f(ts2str(TimeStamp), sn2str(SeqNo), Msg, AddrStr, Mib);
-	{'EXIT', Reason} ->
-	    format_tab(
-	      "** error in log file at ~s from ~s ~p\n\n",
-	      [ts2str(TimeStamp), sn2str(SeqNo), AddrStr, Reason])
+	    try f(ts2str(TimeStamp), sn2str(SeqNo), Msg, AddrStr, Mib) of
+                {ok, _} = OK ->
+                    OK
+            catch
+                FormatT:FormatE ->
+                    format_error("format scoped pdu",
+                                 TimeStamp, SeqNo, AddrStr, FormatT, FormatE)
+            end
+    catch
+        DecT:DecE ->
+            format_error("decode scoped pdu",
+                         TimeStamp, SeqNo, AddrStr, DecT, DecE)
     end;
 do_format_msg(TimeStamp, SeqNo, Packet, AddrStr, Mib) ->
-    case (catch snmp_pdus:dec_message(binary_to_list(Packet))) of
+    try snmp_pdus:dec_message(binary_to_list(Packet)) of
 	Msg when is_record(Msg, message) ->
-	    f(ts2str(TimeStamp), sn2str(SeqNo), Msg, AddrStr, Mib);
-	{'EXIT', Reason} ->
-	    format_tab(
-	      "** error in log file ~s from ~s ~p\n\n",
-	      [ts2str(TimeStamp), sn2str(SeqNo), AddrStr, Reason])
+	    try f(ts2str(TimeStamp), sn2str(SeqNo), Msg, AddrStr, Mib) of
+                {ok, _} = OK ->
+                    OK
+                        
+            catch
+                FormatT:FormatE ->
+                    %% Provide info about the message
+                    Extra = 
+                        case Msg#message.version of
+                            'version-3' ->
+                                #v3_hdr{msgID            = ID,
+                                        msgFlags         = Flags,
+                                        msgSecurityModel = SecModel} = 
+                                    Msg#message.vsn_hdr,
+                                SecLevel = snmp_misc:get_sec_level(Flags),
+                                f("msg-id: ~w, sec-level: ~w, sec-model: ~w", 
+                                  [ID, SecLevel, sm2atom(SecModel)]);
+                            _ -> %% Community
+                                f("community: ~s", [Msg#message.vsn_hdr])
+                        end,
+                    format_error(f("format ~p message; ~s", 
+                                   [Msg#message.version, Extra]),
+                                 TimeStamp, SeqNo, AddrStr, FormatT, FormatE)
+            end
+    catch
+        DecT:DecE ->
+            format_error("decode message",
+                         TimeStamp, SeqNo, AddrStr, DecT, DecE)
     end.
-    
-    
-%% format_msg({TimeStamp, {V3Hdr, ScopedPdu}, {Addr, Port}}, 
-%% 	   Mib, Start, Stop) ->
-%%     format_msg({TimeStamp, {V3Hdr, ScopedPdu}, Addr, Port}, 
-%% 	      Mib, Start, Stop);
-%% format_msg({TimeStamp, {V3Hdr, ScopedPdu}, Addr, Port}, 
-%% 	  Mib, Start, Stop) ->
-%%     case timestamp_filter(TimeStamp, Start, Stop) of
-%%         true ->
-%%             case (catch snmp_pdus:dec_scoped_pdu(ScopedPdu)) of
-%%                 ScopedPDU when record(ScopedPDU, scopedPdu) -> 
-%%                     Msg = #message{version = 'version-3',
-%%                                    vsn_hdr = V3Hdr,
-%%                                    data    = ScopedPDU},
-%%                     f(ts2str(TimeStamp), Msg, Addr, Port, Mib);
-%%                 {'EXIT', Reason} ->
-%%                     format_tab("** error in log file at ~s from ~p:~w ~p\n\n", 
-%% 			       [ts2str(TimeStamp), ip(Addr), Port, Reason])
-%%             end;
-%%         false ->
-%%             ignore
-%%     end;
-%% format_msg({TimeStamp, Packet, {Addr, Port}}, Mib, Start, Stop) -> 
-%%     format_msg({TimeStamp, Packet, Addr, Port}, Mib, Start, Stop);
-%% format_msg({TimeStamp, Packet, Addr, Port}, Mib, Start, Stop) ->
-%%     case timestamp_filter(TimeStamp, Start, Stop) of
-%%         true ->
-%%             case (catch snmp_pdus:dec_message(binary_to_list(Packet))) of
-%%                 Msg when record(Msg, message) ->
-%%                     f(ts2str(TimeStamp), Msg, Addr, Port, Mib);
-%%                 {'EXIT', Reason} ->
-%%                     format_tab("** error in log file ~p\n\n", [Reason])
-%%             end;
-%%         false ->
-%%             ignore
-%%     end;
-%% format_msg(_, _Mib, _Start, _Stop) ->
-%%     format_tab("** unknown entry in log file\n\n", []).
+
+
+format_error(WhatStr, TimeStamp, AddrStr, throw, {error, Reason}) ->
+    {ok, Str} = 
+        format_tab(
+          "** error (~s) in log file at ~s from ~s: "
+          "~n   ~p\n\n",
+          [WhatStr, ts2str(TimeStamp), AddrStr, Reason]),
+    {error, Str};
+format_error(WhatStr, TimeStamp, AddrStr, T, E) ->
+    {ok, Str} = 
+        format_tab(
+          "** error (~s) in log file at ~s from ~s: "
+          "~n   ~w: ~p\n\n",
+          [WhatStr, ts2str(TimeStamp), AddrStr, T, E]),
+    {error, Str}.
+
+format_error(WhatStr, TimeStamp, SeqNo, AddrStr, throw, {error, Reason}) ->
+    {ok, Str} = 
+        format_tab(
+          "** error (~s) in log file at ~s~s from ~s: "
+          "~n   ~p\n\n",
+          [WhatStr, ts2str(TimeStamp), sn2str(SeqNo), AddrStr, Reason]),        
+    {error, Str};
+format_error(WhatStr, TimeStamp, SeqNo, AddrStr, T, E) ->
+    {ok, Str} = 
+        format_tab(
+          "** error (~s) in log file at ~s~s from ~s: "
+          "~n   ~w, ~p\n\n",
+          [WhatStr, ts2str(TimeStamp), sn2str(SeqNo), AddrStr, T, E]),        
+    {error, Str}.
+
 
 f(TimeStamp, SeqNo, 
   #message{version = Vsn, vsn_hdr = VsnHdr, data = Data}, 
@@ -838,51 +924,21 @@ f(TimeStamp, SeqNo,
 	end,
     format_tab(
       "~w ~s - ~s [~s]~s ~w\n~s",
-      [Class, AddrStr, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
-
-%% f(TimeStamp, SeqNo,
-%%   #message{version = Vsn, vsn_hdr = VsnHdr, data = Data},
-%%   Addr, Port, Mib) ->
-%%     Str    = format_pdu(Data, Mib),
-%%     HdrStr = format_header(Vsn, VsnHdr),
-%%     case get_type(Data) of
-%%         trappdu ->
-%%             f_trap(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-%%         'snmpv2-trap' ->
-%%             f_trap(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-%%         'inform-request' ->
-%%             f_inform(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-%%         'get-response' ->
-%%             f_response(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-%%         report ->
-%%             f_report(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port);
-%%         _ ->
-%%             f_request(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port)
-%%     end.
-
-%% f_request(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-%%     format_tab("request ~s:~w - ~s [~s]~s ~w\n~s",
-%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
-
-%% f_response(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-%%     format_tab("response ~s:~w - ~s [~s]~s ~w\n~s",
-%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
-
-%% f_report(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-%%     format_tab("report ~s:~w - ~s [~s]~s ~w\n~s",
-%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
+      [Class, AddrStr, HdrStr, TimeStamp, SeqNo, Vsn, Str]);
+f(TimeStamp, SeqNo, Msg, AddrStr, _Mib) ->
+    io:format("<ERROR> Unexpected data: "
+              "~n   TimeStamp: ~s~s"
+              "~n   Msg:       ~p"
+              "~n   AddrStr:   ~p"
+              "~n", [TimeStamp, SeqNo, Msg, AddrStr]),
+    throw({error, 'invalid-message'}).
 
-%% f_trap(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-%%     format_tab("trap ~s:~w - ~s [~s]~s ~w\n~s",
-%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
+f(F, A) ->
+    lists:flatten(io_lib:format(F, A)).
 
-%% f_inform(TimeStamp, SeqNo, Vsn, HdrStr, Str, Addr, Port) ->
-%%     format_tab("inform ~s:~w - ~s [~s]~s ~w\n~s",
-%% 	       [ip(Addr), Port, HdrStr, TimeStamp, SeqNo, Vsn, Str]).
 
 ipPort2Str(Ip, Port) ->
     snmp_conf:mk_addr_string({Ip, Port}).
-    %% io_lib:format("~s:~w", [ip(Ip), Port]).
 
 %% Convert a timestamp 2-tupple to a printable string
 %%
@@ -973,7 +1029,13 @@ format_pdu(#scopedPdu{contextName = Context, data = Pdu}, Mib) ->
     io_lib:format("Context: \"~s\"\n~s",
                   [Context, snmp_misc:format_pdu(Pdu, Mib)]);
 format_pdu(Pdu, Mib) ->
-    snmp_misc:format_pdu(Pdu, Mib).
+    try snmp_misc:format_pdu(Pdu, Mib) of
+        Str ->
+            Str
+    catch
+        _:_ ->
+            throw({error, 'invalid-pdu'})
+    end.
 
 get_type(#scopedPdu{data = Pdu}) ->
     get_type(Pdu);
@@ -983,12 +1045,6 @@ get_type(#pdu{type = Type}) ->
     Type.
 
 
-%% ip(Domain, Addr) ->
-%%     snmp_conf:mk_addr_string(Domain, Addr).
-%% ip({A,B,C,D}) ->
-%%     io_lib:format("~w.~w.~w.~w", [A,B,C,D]).
-
-
 
 %% -------------------------------------------------------------------    
 %% Various utility functions