Bug ID 424561: Virtual server configured with preserve_port_strict in CMP environment

Last Modified: Apr 28, 2025

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

Known Affected Versions:
11.4.0

Fixed In:
11.5.0, 11.4.1, 11.4.0 HF4

Opened: Jul 03, 2013

Severity: 2-Critical

Related Article: K14849

Symptoms

If a virtual server is configured with preserve_port_strict in CMP environment, the returned packet for the given request may hit different tmm and be dropped due to no forwarding flow being established.

Impact

Reply packet for requests may be dropped due to a missing forwarding flow.

Conditions

Virtual server configured with preserve_port_strict in CMP environment.

Workaround

None

Fix Information

Virtual server configured with preserve_port_strict now functions correctly with CMP.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips