Bug ID 439048: TCP connection stall when tcpdump with tcp segmentation offload enabled

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
11.4.1

Fixed In:
11.5.0, 11.4.1 HF6

Opened: Nov 26, 2013
Severity: 1-Blocking
Related AskF5 Article:
K15192

Symptoms

TCP connections are stalled when tcpdump is started on the BIG-IP system and tcp segmentation offload is enabled.

Impact

TCP connections stall.

Conditions

This occurs with TCP connections when tcpdump is started on the BIG-IP system and tcp segmentation offload is enabled.

Workaround

None.

Fix Information

TCP connections no longer stall when tcpdump is started on the BIG-IP system and tcp segmentation offload is enabled.

Behavior Change

TCP and UDP hardware checksum offloading is no longer disabled when running tcpdump on the BIG-IP.