Bug ID 558534: The TMM may crash if http url rewrite is used with APM

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
12.1.0, 11.6.1 HF1

Opened: Nov 16, 2015
Severity: 2-Critical


The HTTP uri rewrite feature depends on having a client-side to determine the ip address of that client. However, APM may use the HTTP filter without having a client-side. This can cause a TMM crash when the missing ip address is used by the HTTP uri rewrite feature.


Traffic disrupted while tmm restarts.


APM + HTTP uri rewrite feature. (This is different to the "rewrite" profile.)


Disable the HTTP uri rewrite feature when using APM. An iRule may be used to safely implement its transformations.

Fix Information

The TMM no longer crashes when the HTTP uri rewrite feature is used with APM.

Behavior Change