Bug ID 431503: TMSH crashes in rare initial tunnel configurations

Last Modified: Oct 08, 2020

Bug Tracker

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

Known Affected Versions:
11.2.0, 11.3.0, 11.4.0, 11.4.1, 14.1.0,,,,,, 14.1.2,,,,,,,

Fixed In:, 11.5.0, 11.4.1 HF6, 11.4.0 HF4

Opened: Sep 23, 2013
Severity: 3-Major
Related AskF5 Article:


In rare BigIP configuration scenarios, TMM may crash during its startup process when the tunnel configurations are loaded.


TMM crash in rare race conditions.


During TMM startup, a tunnel is created, then immediately removed during the configuration load period, when TMM neighbor messages may be in flight via the tunnel. When the race condition fits, the neighbor message may land on an invalid tunnel.



Fix Information

TMM no longer crashes on neighbor messages during the initial tunnel config load process.

Behavior Change