Recvmsg: return packet info (dst addr and nw i/f)

This extends `ddsrt_recvmsg` to not only return the packet's source
address, but also its destination address and the interface on which it
was received.  If the operating system does not provide this
information, they can be set to "unknown".

The additional information is valuable because, at least on Linux, one
sometimes receives multicast packets from an interface on which one did
not join the multicast group for reasons I am yet to discover.  This
allows detecting such cases.  It also makes it possible to make a more
informed guess about which interface is the most suitable choice for
communicating with a node X, and it also seems likely that receiving a
multicast from X is a good indicator that sending a multicast to node X
will work.

This commit does not use the information other than for writing it in
the trace.  Current implementation is verified to work on macOS, Linux
and Windows for IPv4 and IPv6.

Signed-off-by: Erik Boasson <[email protected]>

docs/manual/config/config_file_reference.rst

@@ -773,7 +773,7 @@ The default value is: ``default``
 //CycloneDDS/Domain/Internal
 ============================
 
-Children: :ref:`AccelerateRexmitBlockSize<//CycloneDDS/Domain/Internal/AccelerateRexmitBlockSize>`, :ref:`AckDelay<//CycloneDDS/Domain/Internal/AckDelay>`, :ref:`AutoReschedNackDelay<//CycloneDDS/Domain/Internal/AutoReschedNackDelay>`, :ref:`BuiltinEndpointSet<//CycloneDDS/Domain/Internal/BuiltinEndpointSet>`, :ref:`BurstSize<//CycloneDDS/Domain/Internal/BurstSize>`, :ref:`ControlTopic<//CycloneDDS/Domain/Internal/ControlTopic>`, :ref:`DefragReliableMaxSamples<//CycloneDDS/Domain/Internal/DefragReliableMaxSamples>`, :ref:`DefragUnreliableMaxSamples<//CycloneDDS/Domain/Internal/DefragUnreliableMaxSamples>`, :ref:`DeliveryQueueMaxSamples<//CycloneDDS/Domain/Internal/DeliveryQueueMaxSamples>`, :ref:`EnableExpensiveChecks<//CycloneDDS/Domain/Internal/EnableExpensiveChecks>`, :ref:`GenerateKeyhash<//CycloneDDS/Domain/Internal/GenerateKeyhash>`, :ref:`HeartbeatInterval<//CycloneDDS/Domain/Internal/HeartbeatInterval>`, :ref:`LateAckMode<//CycloneDDS/Domain/Internal/LateAckMode>`, :ref:`LivelinessMonitoring<//CycloneDDS/Domain/Internal/LivelinessMonitoring>`, :ref:`MaxParticipants<//CycloneDDS/Domain/Internal/MaxParticipants>`, :ref:`MaxQueuedRexmitBytes<//CycloneDDS/Domain/Internal/MaxQueuedRexmitBytes>`, :ref:`MaxQueuedRexmitMessages<//CycloneDDS/Domain/Internal/MaxQueuedRexmitMessages>`, :ref:`MaxSampleSize<//CycloneDDS/Domain/Internal/MaxSampleSize>`, :ref:`MeasureHbToAckLatency<//CycloneDDS/Domain/Internal/MeasureHbToAckLatency>`, :ref:`MonitorPort<//CycloneDDS/Domain/Internal/MonitorPort>`, :ref:`MultipleReceiveThreads<//CycloneDDS/Domain/Internal/MultipleReceiveThreads>`, :ref:`NackDelay<//CycloneDDS/Domain/Internal/NackDelay>`, :ref:`PreEmptiveAckDelay<//CycloneDDS/Domain/Internal/PreEmptiveAckDelay>`, :ref:`PrimaryReorderMaxSamples<//CycloneDDS/Domain/Internal/PrimaryReorderMaxSamples>`, :ref:`PrioritizeRetransmit<//CycloneDDS/Domain/Internal/PrioritizeRetransmit>`, :ref:`RediscoveryBlacklistDuration<//CycloneDDS/Domain/Internal/RediscoveryBlacklistDuration>`, :ref:`RetransmitMerging<//CycloneDDS/Domain/Internal/RetransmitMerging>`, :ref:`RetransmitMergingPeriod<//CycloneDDS/Domain/Internal/RetransmitMergingPeriod>`, :ref:`RetryOnRejectBestEffort<//CycloneDDS/Domain/Internal/RetryOnRejectBestEffort>`, :ref:`SPDPResponseMaxDelay<//CycloneDDS/Domain/Internal/SPDPResponseMaxDelay>`, :ref:`SecondaryReorderMaxSamples<//CycloneDDS/Domain/Internal/SecondaryReorderMaxSamples>`, :ref:`SocketReceiveBufferSize<//CycloneDDS/Domain/Internal/SocketReceiveBufferSize>`, :ref:`SocketSendBufferSize<//CycloneDDS/Domain/Internal/SocketSendBufferSize>`, :ref:`SquashParticipants<//CycloneDDS/Domain/Internal/SquashParticipants>`, :ref:`SynchronousDeliveryLatencyBound<//CycloneDDS/Domain/Internal/SynchronousDeliveryLatencyBound>`, :ref:`SynchronousDeliveryPriorityThreshold<//CycloneDDS/Domain/Internal/SynchronousDeliveryPriorityThreshold>`, :ref:`Test<//CycloneDDS/Domain/Internal/Test>`, :ref:`UnicastResponseToSPDPMessages<//CycloneDDS/Domain/Internal/UnicastResponseToSPDPMessages>`, :ref:`UseMulticastIfMreqn<//CycloneDDS/Domain/Internal/UseMulticastIfMreqn>`, :ref:`Watermarks<//CycloneDDS/Domain/Internal/Watermarks>`, :ref:`WriterLingerDuration<//CycloneDDS/Domain/Internal/WriterLingerDuration>`
+Children: :ref:`AccelerateRexmitBlockSize<//CycloneDDS/Domain/Internal/AccelerateRexmitBlockSize>`, :ref:`AckDelay<//CycloneDDS/Domain/Internal/AckDelay>`, :ref:`AutoReschedNackDelay<//CycloneDDS/Domain/Internal/AutoReschedNackDelay>`, :ref:`BuiltinEndpointSet<//CycloneDDS/Domain/Internal/BuiltinEndpointSet>`, :ref:`BurstSize<//CycloneDDS/Domain/Internal/BurstSize>`, :ref:`ControlTopic<//CycloneDDS/Domain/Internal/ControlTopic>`, :ref:`DefragReliableMaxSamples<//CycloneDDS/Domain/Internal/DefragReliableMaxSamples>`, :ref:`DefragUnreliableMaxSamples<//CycloneDDS/Domain/Internal/DefragUnreliableMaxSamples>`, :ref:`DeliveryQueueMaxSamples<//CycloneDDS/Domain/Internal/DeliveryQueueMaxSamples>`, :ref:`EnableExpensiveChecks<//CycloneDDS/Domain/Internal/EnableExpensiveChecks>`, :ref:`ExtendedPacketInfo<//CycloneDDS/Domain/Internal/ExtendedPacketInfo>`, :ref:`GenerateKeyhash<//CycloneDDS/Domain/Internal/GenerateKeyhash>`, :ref:`HeartbeatInterval<//CycloneDDS/Domain/Internal/HeartbeatInterval>`, :ref:`LateAckMode<//CycloneDDS/Domain/Internal/LateAckMode>`, :ref:`LivelinessMonitoring<//CycloneDDS/Domain/Internal/LivelinessMonitoring>`, :ref:`MaxParticipants<//CycloneDDS/Domain/Internal/MaxParticipants>`, :ref:`MaxQueuedRexmitBytes<//CycloneDDS/Domain/Internal/MaxQueuedRexmitBytes>`, :ref:`MaxQueuedRexmitMessages<//CycloneDDS/Domain/Internal/MaxQueuedRexmitMessages>`, :ref:`MaxSampleSize<//CycloneDDS/Domain/Internal/MaxSampleSize>`, :ref:`MeasureHbToAckLatency<//CycloneDDS/Domain/Internal/MeasureHbToAckLatency>`, :ref:`MonitorPort<//CycloneDDS/Domain/Internal/MonitorPort>`, :ref:`MultipleReceiveThreads<//CycloneDDS/Domain/Internal/MultipleReceiveThreads>`, :ref:`NackDelay<//CycloneDDS/Domain/Internal/NackDelay>`, :ref:`PreEmptiveAckDelay<//CycloneDDS/Domain/Internal/PreEmptiveAckDelay>`, :ref:`PrimaryReorderMaxSamples<//CycloneDDS/Domain/Internal/PrimaryReorderMaxSamples>`, :ref:`PrioritizeRetransmit<//CycloneDDS/Domain/Internal/PrioritizeRetransmit>`, :ref:`RediscoveryBlacklistDuration<//CycloneDDS/Domain/Internal/RediscoveryBlacklistDuration>`, :ref:`RetransmitMerging<//CycloneDDS/Domain/Internal/RetransmitMerging>`, :ref:`RetransmitMergingPeriod<//CycloneDDS/Domain/Internal/RetransmitMergingPeriod>`, :ref:`RetryOnRejectBestEffort<//CycloneDDS/Domain/Internal/RetryOnRejectBestEffort>`, :ref:`SPDPResponseMaxDelay<//CycloneDDS/Domain/Internal/SPDPResponseMaxDelay>`, :ref:`SecondaryReorderMaxSamples<//CycloneDDS/Domain/Internal/SecondaryReorderMaxSamples>`, :ref:`SocketReceiveBufferSize<//CycloneDDS/Domain/Internal/SocketReceiveBufferSize>`, :ref:`SocketSendBufferSize<//CycloneDDS/Domain/Internal/SocketSendBufferSize>`, :ref:`SquashParticipants<//CycloneDDS/Domain/Internal/SquashParticipants>`, :ref:`SynchronousDeliveryLatencyBound<//CycloneDDS/Domain/Internal/SynchronousDeliveryLatencyBound>`, :ref:`SynchronousDeliveryPriorityThreshold<//CycloneDDS/Domain/Internal/SynchronousDeliveryPriorityThreshold>`, :ref:`Test<//CycloneDDS/Domain/Internal/Test>`, :ref:`UnicastResponseToSPDPMessages<//CycloneDDS/Domain/Internal/UnicastResponseToSPDPMessages>`, :ref:`UseMulticastIfMreqn<//CycloneDDS/Domain/Internal/UseMulticastIfMreqn>`, :ref:`Watermarks<//CycloneDDS/Domain/Internal/Watermarks>`, :ref:`WriterLingerDuration<//CycloneDDS/Domain/Internal/WriterLingerDuration>`
 
 The Internal elements deal with a variety of settings that are evolving and that are not necessarily fully supported. For the majority of the Internal settings the functionality is supported, but the right to change the way the options control the functionality is reserved. This includes renaming or moving options.
 
@@ -954,6 +954,18 @@ In addition, there is the keyword all that enables all checks.
 The default value is: ``<empty>``
 
 
+.. _`//CycloneDDS/Domain/Internal/ExtendedPacketInfo`:
+
+//CycloneDDS/Domain/Internal/ExtendedPacketInfo
+-----------------------------------------------
+
+Boolean
+
+Whether to enable the IP\_PKTINFO on UDP sockets to get hold of the packet destination address and interface on which it was received. This allows for better filtering on discovery packets, but comes at a small performance penalty.
+
+The default value is: ``true``
+
+
 .. _`//CycloneDDS/Domain/Internal/GenerateKeyhash`:
 
 //CycloneDDS/Domain/Internal/GenerateKeyhash
@@ -2642,9 +2654,9 @@ The categorisation of tracing output is incomplete and hence most of the verbosi
 The default value is: ``none``
 
 ..
-   generated from ddsi_config.h[570f67bd3080674a4bad53d9580a8bb7ad1e6e4d] 
+   generated from ddsi_config.h[7a2ea305c6a2eab7fe285734641fe60da41874b6] 
    generated from ddsi__cfgunits.h[bd22f0c0ed210501d0ecd3b07c992eca549ef5aa] 
-   generated from ddsi__cfgelems.h[d4d0b8c7cf61f0a1cfa4b62e02458cf7b8962536] 
+   generated from ddsi__cfgelems.h[0d6b51026a1233c9516629caf2de8748b027bc20] 
    generated from ddsi_config.c[efeae198a5e12ca8977a655216470564b5c44b64] 
    generated from _confgen.h[e32eabfc35e9f3a7dcb63b19ed148c0d17c6e5fc] 
    generated from _confgen.c[237308acd53897a34e8c643e16e05a61d73ffd65] 

docs/manual/options.md

@@ -517,7 +517,7 @@ The default value is: `default`
 
 
 ### //CycloneDDS/Domain/Internal
-Children: [AccelerateRexmitBlockSize](#cycloneddsdomaininternalacceleraterexmitblocksize), [AckDelay](#cycloneddsdomaininternalackdelay), [AutoReschedNackDelay](#cycloneddsdomaininternalautoreschednackdelay), [BuiltinEndpointSet](#cycloneddsdomaininternalbuiltinendpointset), [BurstSize](#cycloneddsdomaininternalburstsize), [ControlTopic](#cycloneddsdomaininternalcontroltopic), [DefragReliableMaxSamples](#cycloneddsdomaininternaldefragreliablemaxsamples), [DefragUnreliableMaxSamples](#cycloneddsdomaininternaldefragunreliablemaxsamples), [DeliveryQueueMaxSamples](#cycloneddsdomaininternaldeliveryqueuemaxsamples), [EnableExpensiveChecks](#cycloneddsdomaininternalenableexpensivechecks), [GenerateKeyhash](#cycloneddsdomaininternalgeneratekeyhash), [HeartbeatInterval](#cycloneddsdomaininternalheartbeatinterval), [LateAckMode](#cycloneddsdomaininternallateackmode), [LivelinessMonitoring](#cycloneddsdomaininternallivelinessmonitoring), [MaxParticipants](#cycloneddsdomaininternalmaxparticipants), [MaxQueuedRexmitBytes](#cycloneddsdomaininternalmaxqueuedrexmitbytes), [MaxQueuedRexmitMessages](#cycloneddsdomaininternalmaxqueuedrexmitmessages), [MaxSampleSize](#cycloneddsdomaininternalmaxsamplesize), [MeasureHbToAckLatency](#cycloneddsdomaininternalmeasurehbtoacklatency), [MonitorPort](#cycloneddsdomaininternalmonitorport), [MultipleReceiveThreads](#cycloneddsdomaininternalmultiplereceivethreads), [NackDelay](#cycloneddsdomaininternalnackdelay), [PreEmptiveAckDelay](#cycloneddsdomaininternalpreemptiveackdelay), [PrimaryReorderMaxSamples](#cycloneddsdomaininternalprimaryreordermaxsamples), [PrioritizeRetransmit](#cycloneddsdomaininternalprioritizeretransmit), [RediscoveryBlacklistDuration](#cycloneddsdomaininternalrediscoveryblacklistduration), [RetransmitMerging](#cycloneddsdomaininternalretransmitmerging), [RetransmitMergingPeriod](#cycloneddsdomaininternalretransmitmergingperiod), [RetryOnRejectBestEffort](#cycloneddsdomaininternalretryonrejectbesteffort), [SPDPResponseMaxDelay](#cycloneddsdomaininternalspdpresponsemaxdelay), [SecondaryReorderMaxSamples](#cycloneddsdomaininternalsecondaryreordermaxsamples), [SocketReceiveBufferSize](#cycloneddsdomaininternalsocketreceivebuffersize), [SocketSendBufferSize](#cycloneddsdomaininternalsocketsendbuffersize), [SquashParticipants](#cycloneddsdomaininternalsquashparticipants), [SynchronousDeliveryLatencyBound](#cycloneddsdomaininternalsynchronousdeliverylatencybound), [SynchronousDeliveryPriorityThreshold](#cycloneddsdomaininternalsynchronousdeliveryprioritythreshold), [Test](#cycloneddsdomaininternaltest), [UnicastResponseToSPDPMessages](#cycloneddsdomaininternalunicastresponsetospdpmessages), [UseMulticastIfMreqn](#cycloneddsdomaininternalusemulticastifmreqn), [Watermarks](#cycloneddsdomaininternalwatermarks), [WriterLingerDuration](#cycloneddsdomaininternalwriterlingerduration)
+Children: [AccelerateRexmitBlockSize](#cycloneddsdomaininternalacceleraterexmitblocksize), [AckDelay](#cycloneddsdomaininternalackdelay), [AutoReschedNackDelay](#cycloneddsdomaininternalautoreschednackdelay), [BuiltinEndpointSet](#cycloneddsdomaininternalbuiltinendpointset), [BurstSize](#cycloneddsdomaininternalburstsize), [ControlTopic](#cycloneddsdomaininternalcontroltopic), [DefragReliableMaxSamples](#cycloneddsdomaininternaldefragreliablemaxsamples), [DefragUnreliableMaxSamples](#cycloneddsdomaininternaldefragunreliablemaxsamples), [DeliveryQueueMaxSamples](#cycloneddsdomaininternaldeliveryqueuemaxsamples), [EnableExpensiveChecks](#cycloneddsdomaininternalenableexpensivechecks), [ExtendedPacketInfo](#cycloneddsdomaininternalextendedpacketinfo), [GenerateKeyhash](#cycloneddsdomaininternalgeneratekeyhash), [HeartbeatInterval](#cycloneddsdomaininternalheartbeatinterval), [LateAckMode](#cycloneddsdomaininternallateackmode), [LivelinessMonitoring](#cycloneddsdomaininternallivelinessmonitoring), [MaxParticipants](#cycloneddsdomaininternalmaxparticipants), [MaxQueuedRexmitBytes](#cycloneddsdomaininternalmaxqueuedrexmitbytes), [MaxQueuedRexmitMessages](#cycloneddsdomaininternalmaxqueuedrexmitmessages), [MaxSampleSize](#cycloneddsdomaininternalmaxsamplesize), [MeasureHbToAckLatency](#cycloneddsdomaininternalmeasurehbtoacklatency), [MonitorPort](#cycloneddsdomaininternalmonitorport), [MultipleReceiveThreads](#cycloneddsdomaininternalmultiplereceivethreads), [NackDelay](#cycloneddsdomaininternalnackdelay), [PreEmptiveAckDelay](#cycloneddsdomaininternalpreemptiveackdelay), [PrimaryReorderMaxSamples](#cycloneddsdomaininternalprimaryreordermaxsamples), [PrioritizeRetransmit](#cycloneddsdomaininternalprioritizeretransmit), [RediscoveryBlacklistDuration](#cycloneddsdomaininternalrediscoveryblacklistduration), [RetransmitMerging](#cycloneddsdomaininternalretransmitmerging), [RetransmitMergingPeriod](#cycloneddsdomaininternalretransmitmergingperiod), [RetryOnRejectBestEffort](#cycloneddsdomaininternalretryonrejectbesteffort), [SPDPResponseMaxDelay](#cycloneddsdomaininternalspdpresponsemaxdelay), [SecondaryReorderMaxSamples](#cycloneddsdomaininternalsecondaryreordermaxsamples), [SocketReceiveBufferSize](#cycloneddsdomaininternalsocketreceivebuffersize), [SocketSendBufferSize](#cycloneddsdomaininternalsocketsendbuffersize), [SquashParticipants](#cycloneddsdomaininternalsquashparticipants), [SynchronousDeliveryLatencyBound](#cycloneddsdomaininternalsynchronousdeliverylatencybound), [SynchronousDeliveryPriorityThreshold](#cycloneddsdomaininternalsynchronousdeliveryprioritythreshold), [Test](#cycloneddsdomaininternaltest), [UnicastResponseToSPDPMessages](#cycloneddsdomaininternalunicastresponsetospdpmessages), [UseMulticastIfMreqn](#cycloneddsdomaininternalusemulticastifmreqn), [Watermarks](#cycloneddsdomaininternalwatermarks), [WriterLingerDuration](#cycloneddsdomaininternalwriterlingerduration)
 
 The Internal elements deal with a variety of settings that are evolving and that are not necessarily fully supported. For the majority of the Internal settings the functionality is supported, but the right to change the way the options control the functionality is reserved. This includes renaming or moving options.
 
@@ -645,6 +645,14 @@ In addition, there is the keyword all that enables all checks.
 The default value is: `<empty>`
 
 
+#### //CycloneDDS/Domain/Internal/ExtendedPacketInfo
+Boolean
+
+Whether to enable the IP\_PKTINFO on UDP sockets to get hold of the packet destination address and interface on which it was received. This allows for better filtering on discovery packets, but comes at a small performance penalty.
+
+The default value is: `true`
+
+
 #### //CycloneDDS/Domain/Internal/GenerateKeyhash
 Boolean
 
@@ -1846,9 +1854,9 @@ While none prevents any message from being written to a DDSI2 log file.
 The categorisation of tracing output is incomplete and hence most of the verbosity levels and categories are not of much use in the current release. This is an ongoing process and here we describe the target situation rather than the current situation. Currently, the most useful verbosity levels are config, fine and finest.
 
 The default value is: `none`
-<!--- generated from ddsi_config.h[570f67bd3080674a4bad53d9580a8bb7ad1e6e4d] -->
+<!--- generated from ddsi_config.h[7a2ea305c6a2eab7fe285734641fe60da41874b6] -->
 <!--- generated from ddsi__cfgunits.h[bd22f0c0ed210501d0ecd3b07c992eca549ef5aa] -->
-<!--- generated from ddsi__cfgelems.h[d4d0b8c7cf61f0a1cfa4b62e02458cf7b8962536] -->
+<!--- generated from ddsi__cfgelems.h[0d6b51026a1233c9516629caf2de8748b027bc20] -->
 <!--- generated from ddsi_config.c[efeae198a5e12ca8977a655216470564b5c44b64] -->
 <!--- generated from _confgen.h[e32eabfc35e9f3a7dcb63b19ed148c0d17c6e5fc] -->
 <!--- generated from _confgen.c[237308acd53897a34e8c643e16e05a61d73ffd65] -->

etc/cyclonedds.rnc

@@ -462,6 +462,12 @@ CycloneDDS configuration""" ] ]
           xsd:token { pattern = "((whc|rhc|xevent|all)(,(whc|rhc|xevent|all))*)|" }
         }?
         & [ a:documentation [ xml:lang="en" """
+<p>Whether to enable the IP_PKTINFO on UDP sockets to get hold of the packet destination address and interface on which it was received. This allows for better filtering on discovery packets, but comes at a small performance penalty.</p>
+<p>The default value is: <code>true</code></p>""" ] ]
+        element ExtendedPacketInfo {
+          xsd:boolean
+        }?
+        & [ a:documentation [ xml:lang="en" """
 <p>When true, include keyhashes in outgoing data for topics with keys.</p>
 <p>The default value is: <code>false</code></p>""" ] ]
         element GenerateKeyhash {
@@ -1283,9 +1289,9 @@ MIIEpAIBAAKCAQEA3HIh...AOBaaqSV37XBUJg==<br>
   duration_inf = xsd:token { pattern = "inf|0|(\d+(\.\d*)?([Ee][\-+]?\d+)?|\.\d+([Ee][\-+]?\d+)?) *([num]?s|min|hr|day)" }
   memsize = xsd:token { pattern = "0|(\d+(\.\d*)?([Ee][\-+]?\d+)?|\.\d+([Ee][\-+]?\d+)?) *([kMG]i?)?B" }
 }
-# generated from ddsi_config.h[570f67bd3080674a4bad53d9580a8bb7ad1e6e4d] 
+# generated from ddsi_config.h[7a2ea305c6a2eab7fe285734641fe60da41874b6] 
 # generated from ddsi__cfgunits.h[bd22f0c0ed210501d0ecd3b07c992eca549ef5aa] 
-# generated from ddsi__cfgelems.h[d4d0b8c7cf61f0a1cfa4b62e02458cf7b8962536] 
+# generated from ddsi__cfgelems.h[0d6b51026a1233c9516629caf2de8748b027bc20] 
 # generated from ddsi_config.c[efeae198a5e12ca8977a655216470564b5c44b64] 
 # generated from _confgen.h[e32eabfc35e9f3a7dcb63b19ed148c0d17c6e5fc] 
 # generated from _confgen.c[237308acd53897a34e8c643e16e05a61d73ffd65] 

etc/cyclonedds.xsd

@@ -600,6 +600,7 @@ CycloneDDS configuration</xs:documentation>
         <xs:element minOccurs="0" ref="config:DefragUnreliableMaxSamples"/>
         <xs:element minOccurs="0" ref="config:DeliveryQueueMaxSamples"/>
         <xs:element minOccurs="0" ref="config:EnableExpensiveChecks"/>
+        <xs:element minOccurs="0" ref="config:ExtendedPacketInfo"/>
         <xs:element minOccurs="0" ref="config:GenerateKeyhash"/>
         <xs:element minOccurs="0" ref="config:HeartbeatInterval"/>
         <xs:element minOccurs="0" ref="config:LateAckMode"/>
@@ -756,6 +757,13 @@ CycloneDDS configuration</xs:documentation>
       </xs:restriction>
     </xs:simpleType>
   </xs:element>
+  <xs:element name="ExtendedPacketInfo" type="xs:boolean">
+    <xs:annotation>
+      <xs:documentation>
+&lt;p&gt;Whether to enable the IP_PKTINFO on UDP sockets to get hold of the packet destination address and interface on which it was received. This allows for better filtering on discovery packets, but comes at a small performance penalty.&lt;/p&gt;
+&lt;p&gt;The default value is: &lt;code&gt;true&lt;/code&gt;&lt;/p&gt;</xs:documentation>
+    </xs:annotation>
+  </xs:element>
   <xs:element name="GenerateKeyhash" type="xs:boolean">
     <xs:annotation>
       <xs:documentation>
@@ -1939,9 +1947,9 @@ MIIEpAIBAAKCAQEA3HIh...AOBaaqSV37XBUJg==&lt;br&gt;
     </xs:restriction>
   </xs:simpleType>
 </xs:schema>
-<!--- generated from ddsi_config.h[570f67bd3080674a4bad53d9580a8bb7ad1e6e4d] -->
+<!--- generated from ddsi_config.h[7a2ea305c6a2eab7fe285734641fe60da41874b6] -->
 <!--- generated from ddsi__cfgunits.h[bd22f0c0ed210501d0ecd3b07c992eca549ef5aa] -->
-<!--- generated from ddsi__cfgelems.h[d4d0b8c7cf61f0a1cfa4b62e02458cf7b8962536] -->
+<!--- generated from ddsi__cfgelems.h[0d6b51026a1233c9516629caf2de8748b027bc20] -->
 <!--- generated from ddsi_config.c[efeae198a5e12ca8977a655216470564b5c44b64] -->
 <!--- generated from _confgen.h[e32eabfc35e9f3a7dcb63b19ed148c0d17c6e5fc] -->
 <!--- generated from _confgen.c[237308acd53897a34e8c643e16e05a61d73ffd65] -->