Bug ID 1319385: Syncookies may always show as enabled if a listener address is changed while syncookies is on

Last Modified: May 29, 2024

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

Known Affected Versions:
15.1.8.2, 15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3, 15.1.10.4, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3

Opened: Jul 12, 2023

Severity: 3-Major

Symptoms

Syncookies may always show as enabled if a listener source or destination address is changed while syncookies is on. The stat epva_hwvipstat.fsu_rx_drops will be non zero when this occurs.

Impact

Syncookies will be disabled, but the virtual server status will show syncookies enabled.

Conditions

Syncookies on Modifications to the source or destination address

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips