[SR-Users] IPv6 socket issues

[Daniel-Constantin Mierla]

Hello,

On 15/12/14 22:25, Kees Meijs - SIGNET B.V. wrote:
> Good evening,
>
> During pre-production testing, we discovered quite odd IPv6 socket
> issues. Problems arise when a SIP dialog is initiated from within
> Kamailio (e.g. a SIP INVITE message).
>
> Using ngrep, it seems very odd IPv6 sockets are opened, for example:
>
>> U 2001:beef:34a:10::234:5060 -> 2001:beef:285:1::3:5060 1573541542 at 0:1440
>> U 2001:beef:34a:10::234 -> 2001:beef:285:1::3 +1573541542 at 1448:17
>
> Obviously the "1573541542 at 0:1440" part is bogus,

Where is that bogus part appearing effectively? Inside the SIP packet or
just the output of ngrep about source and destination?

Topoh and header manipulation doesn't have anything to do with
sending/receiving sockets...

Cheers,
Daniel

> I expect output similar to:
>
>> U 2001:beef:34a:10::234:5060 -> 2001:beef:285:1::3:5060
>> INVITE sip:s@[2001:beef:285:1::3]:5060 SIP/2.0.
>
> When I do a REGISTER from UA using IPv6, the dialog (and return
> packets) seem completely normal.
>
> Using IPv4, there's no problem at all.
>
> It seems the socket problems are triggered when:
>
>  1. Using the topoh module.
>  2. When altering From: headers e.g. using uac_replace_from().
>
> When topoh is disabled and no headers are altered, IPv6 works as good
> as IPv4.
>
> We could reproduce the problem using Kamailio 4.1.4, 4.1.5 and 4.2.0
> on Debian (64-bit).
>
> Please advice what to do.
>
> Thanks in advance!
>
> Best regards,
> Kees
>
>
>
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-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

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