[asterisk-bugs] [JIRA] (ASTERISK-18032) IPv6 and IPv4 NAT not working

[Valentin Vidić (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-18032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=225699#comment-225699 ] 

Valentin Vidić commented on ASTERISK-18032:
-------------------------------------------

The patch attached above solves the problem for me on v1.8. The code of this function seems unchanged in v11 and v13 so it might work there also. Please test if you have this issue.

> IPv6 and IPv4 NAT not working
> -----------------------------
>
>                 Key: ASTERISK-18032
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-18032
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/IPv6
>    Affects Versions: 1.8.3
>         Environment: AsteriskNOW 1.7.1
> CentOS 5.6
> Asterisk 1.8.3.3
> FreePBX 2.9
>            Reporter: Christoph Timm
>            Assignee: Leif Madsen
>         Attachments: call_from_extern_not_working.cap, call_from_intern_working.cap, full.zip, nat_with_ipv6.diff, sip_general_additional.conf
>
>
> Hi All,
> I tried to play a little bit with IPv6 to test our VoIP quality software with IPv6 RTP streams.
> I add "bindaddr=::" to the general section of the sip.conf and netstat shows that Asterisk is listing also on IPv6.
> My Asterisk server is behind a IPv4 NAT and was working absolutely perfect.
> But after my bindaddr change I got a problem with external calls.
> I spend some time to investigate this issue and found out the outbound calls are working. The externaddr is used in the SIP INVITE.
> If I received a inbound call the externaddr isn't used any more in SDP part of the answer from the Asterisk. The result is one way audio. In addition I saw the following message in the Asterisk log:
>     [May 25 19:18:18] WARNING[3674] chan_sip.c: Address remapping activated in sip.conf but we're using IPv6, which doesn't need it. Please remove "localnet" and/or "externaddr" settings.
> I think that is a bug because the externaddr is used correct during the outbound calls.



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