Bug ID 493825: Upgrade failure from version 11.4.0 due to incorrect configuration being saved

Last Modified: Aug 19, 2026

Affected Product(s):
BIG-IP ASM, Install/Upgrade(all modules)

Known Affected Versions:
11.5.1, 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, 11.5.2 hf1, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 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, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 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

Fixed In:
12.0.0

Opened: Dec 02, 2014

Severity: 3-Major

Related Article: K17520

Symptoms

Upgrade failure, after saving a custom filter based on a client IP address in the Requests logs, loading the configuration, or upgrading from it, might fail.

Impact

Configuration is not loaded.

Conditions

After saving a custom filter based on a client IP address in the Requests logs.

Workaround

Edit /config/bigip.conf, search for the following line, and delete it: values { \? }.

Fix Information

After saving a custom filter based on a client IP address in the Requests logs, loading the configuration, or upgrading from it, now completes successfully.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips