[OpenSIPS-Users] Receiving TM 477

[Bogdan-Andrei Iancu]

Hello Ravindra,

Are you changing the interface (from IPv6 to IPv4) before sending the 
call to user3 ?

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).

see the force_send_socket() function for selecting the outbound interface:
http://www.opensips.org/Documentation/Script-CoreFunctions-2-3#toc16

Regards,

Bogdan-Andrei Iancu
   OpenSIPS Founder and Developer
   http://www.opensips-solutions.com

On 09/13/2017 04:31 PM, Ravindrakumar Bhatt wrote:
>
> Hello,
>
> I apologize for earlier half mail done by mistake . I am using 
> opensips 2.2.3 within centos7.
>
> Opensips is listening on IPv4 and ipv6 sockets.I am getting below 
> shown error when i try call forwarding.
>
> Scenario is :
>
> user1(IPv6) -> user2(IPv6) ->call forward to user3(IPv4)
>
> Sep 13 13:18:45 host60-190-60-195 /usr/local/sbin/opensips[134236]: 
> ERROR:core:proto_udp_send: 
> sendto(sock,0x7f1da1c8a940,2300,0,0x7f1da1ca9698,16): Network is 
> unreachable(101)
> Sep 13 13:18:45 host60-190-60-195 /usr/local/sbin/opensips[134236]: 
> ERROR:tm:msg_send: send() for proto 1 failed
> Sep 13 13:18:45 host60-190-60-195 /usr/local/sbin/opensips[134236]: 
> ERROR:tm:t_forward_nonack: sending request failed
> Sep 13 13:18:45 host60-190-60-195 /usr/local/sbin/opensips[134234]: 
> This is handle_nat reply route: 477
>
> 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?
>
>
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