Bug ID 494280: TMM crashes when PPTP finds a redirected flow when checking for an existing tunnel

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.0, 11.5.1, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.2

Opened: Dec 03, 2014

Severity: 2-Critical

Related Article: K16256

Symptoms

TMM crashes when PPTP finds a redirected flow when checking for an existing tunnel.

Impact

Traffic disrupted while tmm restarts.

Conditions

PPTP-ALG and CGNAT on a chassis system when a blade has been added with a stale PPTP tunnel.

Workaround

None

Fix Information

The system now drops the new flow/tunnel and allow it to clean up, so TMM no longer crashes when PPTP finds a redirected flow when checking for an existing tunnel.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips