Bug ID 434907: A re-invite in a hairpin call may result in incorrect SNAT IPs on a media flow

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(all modules)

Known Affected Versions:
11.4.0, 11.4.1

Fixed In:
11.5.0, 11.4.1 HF2

Opened: Oct 22, 2013
Severity: 3-Major


Media flows not properly set up in Re-invite.


No video/audio can be passed during the specified condition.


Using TCP, set up a hairpin call. Do a re-invite from the client that did not initiate the call, and it will be noticed that the media flows are not set up with the proper SNAT IP (they seem to be reversed). If the re-invite is initiated from the same client, the problem does not exist.



Fix Information

Call from clientA is hairpinned by the BIG-IP system, a reinvite is sent from clientB, the media flows are properly set up.

Behavior Change