Bug ID 745923: Virtual server may reset a connection with port zero when client sends ACK after a 4-way close

Last Modified: Sep 16, 2019

Bug Tracker

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

Known Affected Versions:
14.0.0,,,,,, 14.0.1

Opened: Oct 04, 2018
Severity: 3-Major


Virtual sends a reset of port zero.


Virtual does a wrong reset.


Here is an observed sequence for the problem to happen: 1. Three way handshake initiated by client to VIP. 2. Client actively closing the connection - 4 way close 3. Client continues to send ACK after 4 way close


There is no workaround at this time.

Fix Information


Behavior Change