Bug ID 516598: Multiple TCP keepalive timers for same Fast L4 flow

Last Modified: Apr 28, 2025

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

Known Affected Versions:
11.5.0, 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, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5

Fixed In:
12.0.0, 11.6.0 HF6, 11.5.4

Opened: Apr 06, 2015

Severity: 3-Major

Related Article: K82721850

Symptoms

Multiple TCP keepalive timers for same Fast L4 flow.

Impact

TMM core.

Conditions

Fast L4 profile with TCP Keepalive option enabled.

Workaround

Disable TCP Keepalive option from the Fast L4 profile.

Fix Information

Prevent starting multiple TCP keepalive timer for the same fastL4 flow

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips