Bug ID 625542: SIP ALG with Translation fails for REGISTER refresh.

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3,, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2

Fixed In:
13.0.0, 12.1.2 HF1,

Opened: Oct 28, 2016
Severity: 3-Major


SIP-MBLB-ALG-Translation mode doesn't translate SIP REGISTER refresh message when arriving on the original flow.


SIP Register message egressed will not have translation applied i.e. the CONTACT and VIA header will not be translated.


1. LSN Pool selected on CLIENT_ACCEPTED event. 2. SIP REGISTER request refresh happens on the original flow.



Fix Information

SIP REGISTER refresh processing identifies the translation used for the original SIP REGISTER and applies that translation to the SIP REGISTER refresh message.

Behavior Change