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<tt>Hello Ravindra,<br>
<br>
Are you changing the interface (from IPv6 to IPv4) before sending
the call to user3 ? <br>
<br>
Normally OpenSIPS preserves the incoming interface when comes to
sending out. So, your opensips may try to reach user3 via the IPv6
interface (used for receiving the call from user1).<br>
<br>
see the force_send_socket() function for selecting the outbound
interface:<br>
<a class="moz-txt-link-freetext" href="http://www.opensips.org/Documentation/Script-CoreFunctions-2-3#toc16">http://www.opensips.org/Documentation/Script-CoreFunctions-2-3#toc16</a><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 09/13/2017 04:31 PM, Ravindrakumar
Bhatt wrote:<br>
</div>
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Hello,</div>
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<div>I apologize for earlier half mail done by mistake .
I am using opensips 2.2.3 within centos7.<br>
<br>
</div>
Opensips is listening on IPv4 and ipv6 sockets.I am
getting below shown error when i try call forwarding.<br>
<br>
</div>
<div>Scenario is :</div>
<div><br>
</div>
<div>user1(IPv6) -> user2(IPv6) ->call forward to
user3(IPv4)<br>
</div>
<div><br>
<div>Sep 13 13:18:45 host60-190-60-195
/usr/local/sbin/opensips[<wbr>134236]:
ERROR:core:proto_udp_send: sendto(sock,0x7f1da1c8a940,<wbr>2300,0,0x7f1da1ca9698,16):
Network is unreachable(101)<br>
Sep 13 13:18:45 host60-190-60-195
/usr/local/sbin/opensips[<wbr>134236]:
ERROR:tm:msg_send: send() for proto 1 failed<br>
Sep 13 13:18:45 host60-190-60-195
/usr/local/sbin/opensips[<wbr>134236]:
ERROR:tm:t_forward_nonack: sending request failed<br>
Sep 13 13:18:45 host60-190-60-195
/usr/local/sbin/opensips[<wbr>134234]: This is
handle_nat reply route: 477</div>
<div><br>
</div>
<div>please note i am getting this error in only this
scenario in other cases its working fine.so what is
the reason behind this and how does bridging between
ipv4 and ipv6 works?<br>
</div>
</div>
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