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<p>Hello,</p>
<p>first: 5.2.5 is really old by now and not maintained, it is not
easy anymore to get proper answers for questions related to it.
You should upgrade to a recent release.</p>
<p>Kamailio has nothing to do with defragmentation of incoming UDP
packets, it is the kernel/ip stack doing it. If it is done, then
Kamailio received the entire UDP message.</p>
<p>You should run with debug=3 and see if Kamailio prints log
messages related to processing the SIP request. If not, then
Kamailio didn't receive it, either because it was not forwarded by
kernel/ip stack or kamailio is busy doing something else (which
should be somehow visbile from the log messages or run 'kamctl
trap' to get the gdb backtraces for all kamailio processes and
look into the stored file).</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="moz-cite-prefix">On 18.08.22 10:20, Ali Taher wrote:<br>
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<blockquote type="cite"
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<p class="MsoNormal">Hello all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Lately I faced an issue that Kamailio is
not responding to some invite packets coming from SBC. When
investigating I found that these packets exceeds MTU size.<o:p></o:p></p>
<p class="MsoNormal">Could this be the issue? Knowing that in
Kamailio configuration I have a condition on
is_method("INVITE"). Could be that in case of packet exceeding
MTU size it’s not considered as invite packet by Kamailio?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have Kamailio 5.2.5.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Ali Taher<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<br>
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<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a></pre>
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