Bug ID 746825: MRF SIP ALG with SNAT: Ephemeral listeners not created for un-subscribed outgoing calls

Last Modified: May 01, 2019

Bug Tracker

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,,, 14.0.0,,,,

Opened: Oct 15, 2018
Severity: 3-Major


When a temporary registration is created for an un-subscribed user making an outgoing call, an ephemeral listener to receive incoming messages is not created.


The callee of an outgoing call initiated by an un-registered sip device will not be able to end the call.


If nonregister-subscriber-callout attribute in the siprouter-alg profile is enabled, and an unregiatered client device places an outgoing call, a temporary registration is created. This temporary registration lives for the life of the call. During the lifetime of the temporary registration if the connection from the client is closed, it is not possible for an external device to reach the client.


There is no workaround at this time.

Fix Information


Behavior Change