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    <tt>Hi,<br>
      <br>
      do you have multiple interface ? do you use mhomed ? Maybe you are
      trying to route an un-routeable destination through the socket .<br>
      <br>
      Regards,<br>
    </tt>
    <pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
  OpenSIPS Founder and Developer
  <a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a>
</pre>
    <div class="moz-cite-prefix">On 10/21/2017 02:01 AM, Nabeel wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CA+vx6K+icWH5fTQW7bE2PoquEHU0as95c2ftLSnETRPrkm=XKA@mail.gmail.com">
      <div dir="ltr">
        <div>Hi,</div>
        <div><br>
        </div>
        <div>The listen part parameter is as follows:</div>
        <div><br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
          0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">listen=udp:162.XXX.X.206:5060</blockquote>
        <div><br>
        </div>
        <div>OpenSIPS version: 2.2</div>
        <div><br>
        </div>
        <div>OS: CentOS 7</div>
        <div> </div>
        <div><br>
        </div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On 20 October 2017 at 08:50, Abdul
          Basit <span dir="ltr"><<a
              href="mailto:basit.engg@gmail.com" target="_blank"
              moz-do-not-send="true">basit.engg@gmail.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">
              <div>please share you opnesips.cfg especially the section
                you configured listen parameter.</div>
              <div><br>
              </div>
              <div>what's opensips version and OS you are using?<br>
              </div>
            </div>
            <div class="gmail_extra"><br clear="all">
              <div>
                <div class="m_-7654909893455936930gmail_signature"
                  data-smartmail="gmail_signature">
                  <div><font size="2"><span
                        style="font-family:verdana,sans-serif"><span
                          style="color:rgb(39,78,19)">--<br>
                          regards,</span></span></font></div>
                  <font size="2"><span
                      style="font-family:verdana,sans-serif"><span
                        style="color:rgb(39,78,19)"><br>
                        abdul basit | p: +92 32 1416 4196 | o: +92 30
                        0841 1445</span></span></font></div>
              </div>
              <br>
              <div class="gmail_quote">
                <div>
                  <div class="h5">On 20 October 2017 at 09:22, Nabeel <span
                      dir="ltr"><<a
                        href="mailto:nabeelshikder@gmail.com"
                        target="_blank" moz-do-not-send="true">nabeelshikder@gmail.com</a>></span>
                    wrote:<br>
                  </div>
                </div>
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">
                  <div>
                    <div class="h5">
                      <div dir="ltr">
                        <div>Hello,</div>
                        <div><br>
                        </div>
                        <div>Please help me understand this error below.
                          Is it of concern?</div>
                        <div>The server is not bound to localhost, it is
                          bound to public IPs.</div>
                        <div> </div>
                        <blockquote class="gmail_quote"
                          style="margin:0px 0px 0px
                          0.8ex;border-left:1px solid
                          rgb(204,204,204);padding-left:1ex">Oct 20
                          05:10:12 server2
                          /usr/local/sbin/opensips[923]:
                          ERROR:core:proto_udp_send:
                          sendto(sock,0x7f1f89c2bcf0,4,0<wbr>,0x7ffc5f146db0,16):
                          Invalid argument(22)<br>
                          Oct 20 05:10:12 server2
                          /usr/local/sbin/opensips[923]:
                          CRITICAL:core:proto_udp_send: invalid
                          sendtoparameters#012one possible reason is the
                          server is bound to localhost and#012attempts
                          to send to the net<br>
                          Oct 20 05:10:12 server2
                          /usr/local/sbin/opensips[923]:
                          ERROR:nathelper:msg_send: send() for proto 1
                          failed<br>
                          Oct 20 05:10:12 server2
                          /usr/local/sbin/opensips[923]:
                          ERROR:nathelper:nh_timer: sip msg_send failed!</blockquote>
                        <div><br>
                        </div>
                      </div>
                      <br>
                    </div>
                  </div>
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                </blockquote>
              </div>
              <br>
            </div>
            <br>
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          </blockquote>
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      <pre wrap="">_______________________________________________
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</pre>
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