Bug ID 454256: Retransmitted SYNs result in connection reset

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
11.4.0, 11.4.1

Fixed In:
11.6.0, 11.4.1 HF4

Opened: Mar 27, 2014
Severity: 3-Major
Related AskF5 Article:
K16132

Symptoms

TCP connections are reset during three-way-handshake (3WHS).

Impact

Connections reset

Conditions

SYN retransmission to an IP-forwarding virtual on a CMP platform with persistence enabled.

Workaround

Disable persistence

Fix Information

SYN retransmissions received on CMP platforms will be queued and reprocessed upon completion of persistence processing.

Behavior Change