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

[Olivier Krief (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-25632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=228930#comment-228930 ] 

Olivier Krief commented on ASTERISK-25632:
------------------------------------------

Hello,
I could also reproduce this in a non-cluster environment:
SIP signaling uses expected "auxiliary" IP address
while RTP media uses "main or default" IP address.

Main PJSIP settings are:

[foo-transport]
bind=192.168.50.16
external-signaling-address=192.168.50.16
external-media-address=192.168.50.16
local_net=192.168.50.0/24

where 192.168.50.16 is an auxiliary IP added with a statement like ip addr add 192.168.50.16/24 dev eth0

Following "I figured it out" comment above, shall I provide more data ?

> 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
>            Assignee: George Joseph
>
> 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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