Bug ID 455376: Some response messages are dropped by LTM

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
10.2.4, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.10

Fixed In:
11.6.0, 11.5.2, 11.5.0 HF4, 11.4.1 HF6

Opened: Apr 03, 2014
Severity: 1-Blocking
Related Article:


Some Diameter response messages are dropped by LTM.


Some response messages get dropped by LTM. The LTM may retransmit the request messages.


This occurs when Tcl has parked the request message, typically in an iRule.


Remove the Tcl parking iRule, if possible. Tcl parking events: table, after, persist, session if it is possible.

Fix Information

Parked Diameter response messages are no longer dropped, nor are the requests retransmitted.

Behavior Change