[SR-Users] t_relay changing source IP?

[Brooks Bridges]

That's been set to 0 since inception and this has just recently become an issue.

-----Original Message-----
From: sr-users <sr-users-bounces at lists.kamailio.org> On Behalf Of Alex Balashov
Sent: Monday, October 25, 2021 3:19 PM
To: Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
Subject: Re: [SR-Users] t_relay changing source IP?

Does the behaviour differ depending on whether ‘mhomed’ is on?

https://www.kamailio.org/wiki/cookbooks/5.5.x/core#mhomed

> On Oct 25, 2021, at 6:15 PM, Brooks Bridges <bbridges at call48.com> wrote:
>
> So we have a box that's bound to all interfaces on the server, and one specific IP address (that is an HA IP), and I've run into a bit of an odd behavior that I cannot explain.
>
> For 99.9999% of our traffic, the invites come into the HA IP, and then are forwareded out the HA IP to an SBC for further processing.  In a very rare instance however, I have found that there is an invite coming in the HA IP, and for some unknown reason it gets forwarded out the *interface* ip instead of the HA IP.
>
> For example:
>
> Working:
> 1.2.3.4 -- invite --> 9.8.7.6 (ha IP) -- invite --> 5.6.7.8 (sbc)
>
> Non working:
> 1.2.3.4 -- invite --> 9.8.7.6 (ha IP) *something happens here* 9.8.7.5 (interface IP) -- invite --> 5.6.7.8 (sbc)
>
> I've been through tm, tmx, and the incoming invite of a working and non working request with a fine toothed comb and I cannot for the life of me explain this behavior.  Any thoughts?
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--
Alex Balashov | Principal | Evariste Systems LLC

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