Bug ID 1029105: Hardware SYN cookie mode state change logs bogus virtual server address

Last Modified: Sep 23, 2021

Bug Tracker

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

Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1

Fixed In:
15.1.4

Opened: Jun 25, 2021
Severity: 3-Major

Symptoms

When a virtual server enters or exits hardware SYN cookie mode, a bogus IP address is logged in /var/log/ltm. For example: Syncookie HW mode activated, server name = /Common/vs server IP = 0.0.0.3:0

Impact

Only the logging information is wrong, the hardware SYN cookie mode functions correctly.

Conditions

A virtual server enters or exits hardware SYN cookie mode.

Workaround

None

Fix Information

TMM now logs the correct IP address of the virtual server.

Behavior Change