Bug ID 751924: TSO (TcpSegmentationOffload) packet bit fails IPsec during ESP encryption

Last Modified: Mar 21, 2019

Bug Tracker

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

Known Affected Versions:
14.0.0,,,,, 14.1.0,,,

Opened: Dec 05, 2018
Severity: 2-Critical


Internal error when an unexpected packet bit for TCP segment offload manages to reach crypto code for ESP in IPsec, when this is not expected.


Traffic disrupted while tmm restarts.


Traffic passing through ESP encapsulation for an IPsec tunnel when the TSO bit (for TcpSegmentationOffload) is set on the packet involved.


None is known at this time.

Fix Information


Behavior Change