Bug ID 757777: bigtcp does not issue a RST in all circumstances

Last Modified: May 29, 2024

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4

Fixed In:
15.1.0, 14.1.2.5, 13.1.5

Opened: Feb 06, 2019

Severity: 4-Minor

Symptoms

bigtcp does not issue a TCP reset, e.g. when using the iRule reject command on CLIENT_ACCEPTED

Impact

TCP RST is not sent, and the SYN is silently dropped.

Conditions

bigtcp in use, tcp connection, connection ungracefully shut down via a 'reject' command in an iRule

Workaround

none

Fix Information

bigtcp virtuals send now a TCP RST if needed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips