[SR-Users] t_relay changing source IP?

Brooks Bridges bbridges at call48.com
Tue Oct 26 00:15:12 CEST 2021

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: -- invite --> (ha IP) -- invite --> (sbc)

Non working: -- invite --> (ha IP) *something happens here* (interface IP) -- invite --> (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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