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<p>Typically received parameter to Via is added when the IP address
in that header is different than the source IP of the request.</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="moz-cite-prefix">On 29.09.20 12:06, Duarte Rocha wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAAJJHZhTvJ1cXcGbeCnqC3qqx5y3HPSm2vCPy6m0=JFraPxeHQ@mail.gmail.com">
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<div dir="auto">Thank you for your answers.
<div dir="auto"><br>
</div>
<div dir="auto">I have a old SBC with opensips and it always
adds received to Via. However, in my Kamailio it only adds in
NAT scenarios. I would like to understand why that happens. </div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">A segunda, 28/09/2020, 17:35,
Duarte Rocha <<a href="mailto:duarterocha91@gmail.com"
moz-do-not-send="true">duarterocha91@gmail.com</a>>
escreveu:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="auto">
<div dir="auto">Greetings, </div>
<div dir="auto"><br>
</div>
<div dir="auto">When NAT is detected in my Kamailio, the
proxy add the parameter "received" to the Via header which
includes the source IP.</div>
<div dir="auto"><br>
</div>
<div dir="auto">What is the mechanic or function responsible
for this behaviour? Does it come from the NATHELPER
module?</div>
<div dir="auto"><br>
</div>
<div dir="auto">Best Regards,</div>
</div>
</blockquote>
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</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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Funding: <a class="moz-txt-link-freetext" href="https://www.paypal.me/dcmierla">https://www.paypal.me/dcmierla</a></pre>
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