Bug ID 422808: The connection to a down port specific virtual server will be answered by the next less specific port, change in behavior in 11.2.0

Last Modified: Feb 13, 2019

Bug Tracker

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

Known Affected Versions:
11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
11.5.0, 11.4.1 HF6

Opened: Jun 06, 2013
Severity: 3-Major
Related AskF5 Article:
K15012

Symptoms

In versions prior to 11.2.0, a disabled port specific virtual server (10.10.80.80:80) will answer and then reject the connection. In version 11.2.0 and later, the connection to a down port specific virtual server (10.10.80.80:80) will be answered by the next less specific port, in this test it was a :0 any port virtual server.

Impact

In versions prior to 11.2.0, a disabled port specific virtual server (10.10.80.80:80) will answer and then reject the connection. In version 11.2.0 and later, the connection to a down port specific virtual server (10.10.80.80:80) will be answered by the next less specific port, in this test it was a :0 any port virtual server.

Conditions

In version 11.2.0 and later, the connection to a down port specific virtual server (10.10.80.80:80) will be answered by the next less specific port, in this test it was a :0 any port virtual server.

Workaround

None.

Fix Information

The connection to a down port specific virtual server is no longer answered by the next less specific port.

Behavior Change

In version 11.2.0 and later, the connection to a down port specific virtual server (10.10.80.80:80) will be answered by the next less specific port, for example a :0 any port virtual server.