Bug ID 1016113: HTTP response-chunking 'sustain' profile option may not rechunk responses when also using a web acceleration profile.

Last Modified: May 29, 2024

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

Known Affected Versions:
15.0.0, 15.0.1,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 16.0.0,, 16.0.1,,, 16.1.0, 16.1.1

Fixed In:
17.0.0, 16.1.2, 15.1.4

Opened: May 04, 2021

Severity: 3-Major


Configurations containing HTTP response-chunking 'sustain' and a Web Acceleration profile do not rechunk payload regardless of whether the web server responds with a chunked response.


The BIG-IP response is not chunked, regardless of whether the associated web server responds with a chunked payload when the Web Acceleration is utilized.


-- Incoming response payload to the BIG-IP system is chunked. -- HTTP profile is configured with response-chunking 'sustain'. -- Web Acceleration profile also configured on the same virtual server.


For a chunked response to be delivered to the client, apply the iRule command 'HTTP::rechunk' to responses when a Web Acceleration profile is used.

Fix Information

The BIG-IP response is chunked appropriately when a Web Acceleration profile is used.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips