Bug ID 469519: tmm assert "l4hdr set"

Last Modified: May 14, 2019

Bug Tracker

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

Known Affected Versions:
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

Fixed In:
11.6.0, 11.5.2

Opened: Jun 28, 2014
Severity: 2-Critical


The TMM may assert when processing packet fragments that do not contain an L4 header while using a FastL4 profile.


The TMM crashes and restarts.


FastL4 profile enabled IP fragment reassembly not enabled in the profile


Enable "Reassemble IP Fragments" in the FastL4 profile.

Fix Information

BIG-IP no longer asserts on "l4hdr set".

Behavior Change