Bug ID 611320: Mirrored connection on Active unit of HA pair may be unexpectedly torndown

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1

Fixed In:
13.0.0, 12.1.2

Opened: Aug 16, 2016

Severity: 3-Major

Related Article: K93234008


Mirrored connection on Active unit is torn down. TCP connection is RST with cause of 'HA Expire flow'.


Traffic loss.


Mirrored connection on Standby unit times out due state mismatch with connection on Active unit.


Disable mirroring.

Fix Information

The system no longer mirrors connflow expiration from Standby to Active. This is correct behavior.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips