Bug ID 422199: AVR - Bad handling of chunked responses

Last Modified: Nov 22, 2021

Bug Tracker

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

Known Affected Versions:
11.3.0, 11.4.0

Fixed In:
11.5.0, 11.4.0 HF3, 11.3.0 HF6

Opened: May 30, 2013
Severity: 2-Critical
Related AskF5 Article:


Users report seeing garbled ASCII text in responses.


You may see garbled ASCII text in responses.


ASM and AVR are enabled and server is using Chunk request.


This issue has no workaround at this time.

Fix Information

Requests that are originally chunked are returned chunked to the client even if a DoS profile is assigned to the virtual server.

Behavior Change