Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1
Fixed In:
14.1.0, 14.0.0, 13.1.1.2
Opened: May 31, 2018 Severity: 1-Blocking Related Article:
K91300169
TCP flow may have an incorrect ACK number, and the flow may stall or reset. The BIG-IP system sends an ACK that is higher than it should be based on the data received from the client.
TCP connection fails.
Double tagging is used.
Change the db variable tm.tcplargereceiveoffload value to disable.
TCP flow now has the correct ACK number when double tagging is used.