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    Hello,<br>
    <br>
    can you add a log message to print the source ip, call id and r-uri?<br>
    <br>
    It may happen that the ACK is looping back if r-uri is pointing to
    itself.<br>
    <br>
    Also, try to get the ngrep on all devices, like:<br>
    <br>
    ngrep -d any -qt -W byline port 5060<br>
    <br>
    Pasting the ACK request here will help to see if something is wrong
    with it.<br>
    <br>
    Cheers,<br>
    Daniel<br>
    <br>
    <div class="moz-cite-prefix">On 7/30/12 8:53 AM, David Notivol
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAOHrEOB4_qjpLKZse0-92MMspE6N5rTTwg5DrqqsLyRtdxsG8w@mail.gmail.com"
      type="cite">In a UAC-Kamailio-UAS scenario, we've found a case
      where the ACK coming
      from uac is not relayed by our proxy to the uas. This is the log
      for the
      ACK message:
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:624]: SIP Request:
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:626]:&nbsp; method:&nbsp;
      &lt;ACK&gt;
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:628]:&nbsp; uri:
      <a moz-do-not-send="true" class="moz-txt-link-rfc2396E"
        href="mailto:sip:59138553189@79.170.68.157">&lt;sip:59138553189@79.170.68.157&gt;</a>
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:630]:&nbsp; version:
      &lt;SIP/2.0&gt;
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/parse_via.c:1286]: Found param type
      235, &lt;rport&gt; =
      &lt;n/a&gt;; state=6
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/parse_via.c:1286]: Found param type
      232, &lt;branch&gt;
      = &lt;z9hG4bKKc4gKXyemS9HD&gt;; state=16
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/parse_via.c:2561]: end of header
      reached, state=5
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:511]: parse_headers: Via
      found, flags=2
      <br>
      &nbsp; &nbsp; &nbsp;Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:513]: parse_headers: this
      is the
      first via
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [receive.c:149]: After parse_msg...
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [receive.c:190]: preparing to run routing
      scripts...
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: sl [sl_funcs.c:396]: DEBUG : sl_filter_ACK: to late to be a
      local
      ACK!
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: maxfwd [mf_funcs.c:85]: value = 65
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/parse_to.c:178]: DEBUG: add_param:
      tag=6ne1x6d6-CC-23
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/parse_to.c:802]: end of header
      reached, state=29
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:188]: DEBUG:
      get_hdr_field: &lt;To&gt;
      [52]; uri=[<a moz-do-not-send="true"
        class="moz-txt-link-abbreviated"
        href="mailto:sip:59138553189@79.170.68.157">sip:59138553189@79.170.68.157</a>]
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:190]: DEBUG: to body
      [<a moz-do-not-send="true" class="moz-txt-link-rfc2396E"
        href="mailto:sip:59138553189@79.170.68.157">&lt;sip:59138553189@79.170.68.157&gt;</a>]
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:168]: get_hdr_field: cseq
      &lt;CSeq&gt;:
      &lt;31362871&gt; &lt;ACK&gt;
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:202]: DEBUG: get_hdr_body
      :
      content_length=0
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/msg_parser.c:104]: found end of header
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/parse_to.c:178]: DEBUG: add_param:
      tag=0cS8trtaF196F
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: &lt;core&gt; [parser/parse_to.c:802]: end of header
      reached, state=29
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: sanity [mod_sanity.c:255]: sanity checks result: 1
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: siputils [checks.c:106]: totag found
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      ERROR: &lt;script&gt;: ESTAMOS EN WITHIN
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: rr [loose.c:108]: No Route headers found
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      DEBUG: rr [loose.c:829]: There is no Route HF
      <br>
      &nbsp;&nbsp;&nbsp;&nbsp; Jul 27 10:04:59 theseus-test
      /usr/local/kamailio/sbin/kamailio[17358]:
      ERROR: &lt;script&gt;: NO LOOSE ROUTE&nbsp;
      <div><br>
        However, in a pcap trace I clearly see the Route header:
        <br>
        This is the Record-Route in the 200 message
        <br>
        &nbsp; &nbsp; &nbsp;Record-Route:
        <a class="moz-txt-link-rfc2396E" href="sip:79.170.68.157;lr;ftag=330cdf48-co1022-INS033">&lt;sip:79.170.68.157;lr;ftag=330cdf48-co1022-INS033&gt;</a>
        <br>
        And this is the Route header in the ACk:
        <br>
        &nbsp;&nbsp;&nbsp;&nbsp; Route:
        <a class="moz-txt-link-rfc2396E" href="sip:79.170.68.157;lr;ftag=330cdf48-co1022-INS033">&lt;sip:79.170.68.157;lr;ftag=330cdf48-co1022-INS033&gt;</a>
        <br>
        <br>
      </div>
      <div>I haven't been able to figure out what's going on. We have
        plenty of
        traffic working in that proxy. What am I missing?
        <br>
        <br>
      </div>
      <div>Thanks in advance
        <br>
        David.
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:sr-users@lists.sip-router.org">sr-users@lists.sip-router.org</a>
<a class="moz-txt-link-freetext" href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a>
</pre>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Daniel-Constantin Mierla - <a class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a>
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - <a class="moz-txt-link-freetext" href="http://asipto.com/u/katu">http://asipto.com/u/katu</a>
Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - <a class="moz-txt-link-freetext" href="http://asipto.com/u/kpw">http://asipto.com/u/kpw</a></pre>
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