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    <p>Hello,</p>
    <p>is that contact is some way special? Does it have the
      sipping_bflag set? Or are all those contacts not behind NAT and
      having same branch flags?</p>
    <p>Cheers,<br>
      Daniel<br>
    </p>
    <div class="moz-cite-prefix">On 28.11.18 12:38, Dan Quinney wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:BF9C010D-0288-4AD0-896C-2ADBFA0A6BBD@dial9.co.uk">
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      Hi,
      <div class=""><br class="">
      </div>
      <div class="">When using Kamailio v5.2.0-rc2 (x86_64/linux) 9e729b
        and setting the below nathelper module parameters it appears
        only the first contact is sent a SIP OPTIONS request.</div>
      <div class=""><br class="">
      </div>
      <div class="">
        <div class="">
          <div class="">modparam("nathelper", "natping_interval", 15)</div>
          <div class="">modparam("nathelper", "ping_nated_only", 0)</div>
          <div class="">modparam("nathelper", "sipping_bflag",
            FLB_NATSIPPING)</div>
          <div class="">modparam("nathelper", "sipping_from", "<a
              href="sip:ping@mydomain" class="" moz-do-not-send="true">sip:ping@mydomain</a>.com")</div>
          <div class="">modparam("nathelper", "keepalive_timeout", 90)</div>
        </div>
      </div>
      <div class=""><br class="">
      </div>
      <div class="">Reading the release notes for v5.2 what I’m doing
        *should* be possible, but as the functionality has been recently
        added I’m assuming that it might be a bug.</div>
      <div class=""><br class="">
      </div>
      <div class="">Any assistance on this would be great.</div>
      <div class=""><br class="">
      </div>
      <div class="">Thanks,</div>
      <div class="">Dan </div>
      <br>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
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Kamailio Advanced Training, Nov 12-14, 2018, in Berlin -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a></pre>
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