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    <p>Hi all,</p>
    <p>i'm going crazy with an issue with WiFi VoIP users. Our VoIP
      server, Opensips 1.11.9, was inside DMZ with public IP address
      193.x.x.110 and WiFi network is 10.x.x.x. VoIP fixed phone are
      inside a separated network 172.20.x.x and firewall allowed traffic
      in both directions between those nets.</p>
    <p>When i call from a fixed phone (172.20.1.90, as example) to a
      client connected to WiFi network (ex. 10.101.8.71) it works
      perfectly. But, on other side, SIP signalling fail on a PRACK sent
      to 193.x.x.110 instead of 10.101.8.71, printing out
      "WARNING:rr:after_strict:no socket found for match second RR"
      error.</p>
    <p>5004 was the CALLED user, 5009 the calling one, on WiFi network
      (10.10.1.22):</p>
    <p>/usr/sbin/opensips[29845]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub -
      Route RELAY INVITE To: 5004, From: 5009, RURI:
      <a class="moz-txt-link-abbreviated" href="mailto:sip:5004@172.20.1.33:45802">sip:5004@172.20.1.33:45802</a><br>
      /usr/sbin/opensips[29845]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub -
      Route NEW BRANCH To: 5004, From: 5009, RURI:
      <a class="moz-txt-link-abbreviated" href="mailto:sip:5004@172.20.1.33:45802">sip:5004@172.20.1.33:45802</a><br>
      /usr/sbin/opensips[29844]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub -
      Route RELAY PRACK To: 5004, From: 5009, RURI: sip:193.x.x.110;lr;<br>
      /usr/sbin/opensips[29849]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub -
      Route MISSED CALL INVITE To: 5004, From: 5009, RURI:
      <a class="moz-txt-link-abbreviated" href="mailto:sip:5004@172.20.1.33:45802">sip:5004@172.20.1.33:45802</a><br>
      /usr/sbin/opensips[29845]: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub -
      Route RELAY ACK To: 5004, From: 5009, RURI:
      sip:voip.xxxx.it;transport=udp;lr<br>
      <br>
    </p>
    <p>Oh the 5009 phone i did a tcpdump where i saw:</p>
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    <b style="font-weight:normal;"
      id="docs-internal-guid-01a3dff1-1d15-5de5-4112-0cba41c277b6">
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">SIP/2.0 489 Bad Event</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">v: SIP/2.0/UDP 10.0.8.1:34209;rport=53951;received=10.101.8.71;branch=z9hG4bKPjDD2mDOwI11dIEIX-FY-72lpXL2jS9Qvz</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">Record-Route: <sip:193.<b>x</b>.<b>x</b>.110;lr;ftag=V41fxeL-v5HuRwE4rUnVN-XRVBTsVal3></span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">i: 6znDCyifz4jVTBUDMGe07e2UQrdr2qCl</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">f: <sip:5009@voip.<b>xxx</b>.it>;tag=V41fxeL-v5HuRwE4rUnVN-XRVBTsVal3</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">t: <sip:5009@voip.<b>xxx</b>.it>;tag=1eC1ckc8ts5OH4mJhMwZ-RgHxEFUgMJw</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">CSeq: 27800 SUBSCRIBE</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">l:  0</span></p>
      <br>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">PRACK sip:5004@193.<b>x</b>.<b>x</b>.110:26892 SIP/2.0</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">v: SIP/2.0/UDP 10.0.8.1:34209;rport;branch=z9hG4bKPjghFr0FmAkMHZhWMcfUtl1mUxj-IdkyQg</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">Max-Forwards: 70</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">f: <sip:5009@voip.<b>xxx</b>.it>;tag=KgJWD-2L-MlmTD0FyxgXhlnUeIIOhYbM</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">t: <sip:5004@voip.<b>xxx</b>.it>;tag=aewrc0nu91</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">i: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">CSeq: 13112 PRACK</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">Route: <sip:193.<b>x.</b><b>x</b>.110;lr;ftag=KgJWD-2L-MlmTD0FyxgXhlnUeIIOhYbM;did=b8.6fcc5694></span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">RAck: 1 13111 INVITE</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">l:  0</span></p>
      <br>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">SIP/2.0 404 Not here</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">v: SIP/2.0/UDP 10.0.8.1:34209;received=10.101.8.71;rport=53951;branch=z9hG4bKPjghFr0FmAkMHZhWMcfUtl1mUxj-IdkyQg</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">f: <sip:5009@voip.<b>xxx</b>.it>;tag=KgJWD-2L-MlmTD0FyxgXhlnUeIIOhYbM</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">t: <sip:5004@voip.<b>xxx</b>.it>;tag=aewrc0nu91</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">i: 8EhpJFUAhqwKXTay3zK9S.B3nGLBWUub</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">CSeq: 13112 PRACK</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">Server: VoIP</span></p>
      <p dir="ltr"
        style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span style="font-size:11pt;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;white-space:pre-wrap;">Content-Length: 0</span></p>
      <br>
    </b>Any hints how to solve this issue ?<br>
    <br>
    Thanks, Michele<br>
    <br>
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