[asterisk-bugs] [JIRA] (ASTERISK-25632) res_pjsip_sdp_rtp: RTP is sent from wrong IP address when multihomed

[Daniel Journo (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-25632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=228878#comment-228878 ] 

Daniel Journo commented on ASTERISK-25632:
------------------------------------------

Following comments by 'file', I've tested the theory that PJSIP is letting the system decide which source IP to use. The hope was to fix this by changing the source IP on the system.

It seems like Asterisk is not allowing the system to determine the source IP as previously thought. I set the source IP to the pacemaker virtual IP. Ping tests show that the source IP change has taken effect correctly.

However, Asterisk is still sending audio out of the original IP.

> res_pjsip_sdp_rtp: RTP is sent from wrong IP address when multihomed
> --------------------------------------------------------------------
>
>                 Key: ASTERISK-25632
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25632
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip_sdp_rtp
>    Affects Versions: 13.6.0
>         Environment: Centos 7
>            Reporter: Olivier Krief
>
> Setup is a cluster of two Asterisk boxes. Each box has several Ethernet interfaces and both share a set of floating IP addresses (pacemaker/corosync).
> One box is volontarily powered off.
> The remaining box send an outbound call to a PJSIP trunk.
> Within SDP portion of INVITE message, I can read:
> IN IP4 10.20.143.100
> where 10.20.143.100 is a floating IP.
> The INVITE message itself also comes from 10.20.143.100
> A bit later, as captured with tcpcump, I can see outbound RTP is sent from 
> 10.20.143.101 (non-floating IP).
> Trunk's transport is configured with:
> external_media_address     : 10.20.143.100
> I must add I'm new to clusters.
> My question is:
> is this feature supported (use of floating IP addresses)
> Regards



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