Bug ID 2218205: Dosl7_get_client_ip extraction failure with simultaneous XFF insertion and acceptance in HTTP profile

Last Modified: Feb 03, 2026

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

Known Affected Versions:
17.1.3, 17.1.3.1

Opened: Jan 29, 2026

Severity: 3-Major

Symptoms

When both "Insert X-Forwarded-For" and "Accept XFF" options are enabled in the HTTP profile, the AVR function dosl7_get_client_ip fails to extract the X-Forwarded-For header.

Impact

Bot Defense profiles do not honor the true client IP from X-Forwarded-For headers

Conditions

"Insert X-Forwarded-For" and "Accept XFF" should be enabled in the HTTP profile.

Workaround

AVRD restart - bigstart restart avrd.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips