Bug ID 599313: Support IPv6 address in XFF header to encapsulated within square brackets

Last Modified: May 29, 2024

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

Known Affected Versions:
12.1.1, 12.1.2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:

Opened: Jun 15, 2016

Severity: 3-Major


ASM cannot extract IPv6 addresses from XFF header when it is encapsulated within square brackets.


ASM treats the TCP connection IP address as the request IP address instead of the one present in the XFF header.


1. Trust XFF is on in ASM policy. 2. IP address in XFF header is IPv6 and encapsulated within square brackets.



Fix Information

ASM parser now allows IPV6 to be encapsulated within square brackets.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips