Bug ID 721570: TMM core when trying to log an unknown subscriber

Last Modified: Jul 12, 2023

Affected Product(s):
BIG-IP CGN(all modules)

Known Affected Versions:
13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1

Fixed In:
14.1.0, 14.0.0, 13.1.1.2

Opened: May 23, 2018

Severity: 1-Blocking

Related Article: K20285019

Symptoms

Using CGNAT or FW-NAT with subscriber-id logging enabled can cause a TMM core when the subscriber ID is unknown.

Impact

Traffic disrupted while tmm restarts.

Conditions

-- A LSN pool or FW-NAT source translation that has a logging profile with subscriber-id enabled. -- A PEM profile that allows unknown subscribers.

Workaround

Config PEM to deny connections from unknown subscribers.

Fix Information

The system no longer crashes. It logs 'unknown' for unknown subscribers.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips