<p></p>
<p dir="auto">Hi <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/oej/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/oej">@oej</a> !</p>
<p dir="auto">Disagree about "I would not expect DNS round robin to work with failover. Just load balancing.", according to doc:</p>
<pre><code>use_dns_failover = on |off - if on and sending a request fails (due to not
      being allowed from an onsend_route, send failure, blocklisted destination
      or, when using tm, invite timeout), and the destination resolves to
      multiple ip addresses and/or multiple SRV records, the send will be
      re-tried using the next ip/record. In tm's case a new branch will be
      created for each new send attempt.
</code></pre>
<p dir="auto">And if we comment out the strings which modify Via hiader in the scenario above:</p>
<pre><code>//        $fs = "udp:IPADDR_THISNODE:5060";
//      This have the same effect as forcing socket
//        via_add_srvid(1);
</code></pre>
<p dir="auto">We have the following signaling exchange:<br>
<a target="_blank" rel="noopener noreferrer" href="https://user-images.githubusercontent.com/26491743/148036789-f614d2de-2f61-43c2-907c-3fac61e23c5d.png"><img src="https://user-images.githubusercontent.com/26491743/148036789-f614d2de-2f61-43c2-907c-3fac61e23c5d.png" alt="Screenshot_20220104_121809" style="max-width: 100%;"></a></p>
<p dir="auto">If uncomment any of the statement which modify Via then error appear as described in the first post .</p>

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