Bug ID 745261: The TMM process may crash in some tunnel cases

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.1.2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,

Fixed In:

Opened: Sep 26, 2018

Severity: 3-Major


When Direct Server Return (DSR) or asymmetric routing with a tunnel is deployed, the TMM process may crash.


The TMM process crashes.Traffic disrupted while tmm restarts.


There are two scenarios that may lead to this issue: Scenario 1: DSR - DSR is deployed. Scenario 2: Asymmetric routing - The sys db variable connection.vlankeyed is set to 'disable'. - A VLAN and a tunnel are used to handle asymmetric routing.



Fix Information

The TMM process no longer crashes.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips