Bug ID 1110165: Fasthttp connections infrequently fail

Last Modified: Mar 15, 2024

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

Known Affected Versions:
14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2

Opened: May 26, 2022

Severity: 3-Major

Symptoms

BIG-IP can rarely send client payloads to servers before the connection has been fully established.

Impact

Some servers will reset the connection, causing client side HTTP requests to fail.

Conditions

-- Fasthttp virtual server -- Cookie persistence enabled -- The payload is spread across multiple packets

Workaround

Use a fastl4/standard virtual server instead.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips