Bug ID 426992: Self IPs fail to listen on some default port

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
11.2.1, 11.3.0, 11.4.0, 11.4.1

Fixed In:

Opened: Aug 02, 2013
Severity: 3-Major
Related AskF5 Article:


When there is more than one self IP address, some of these self IPs might not have a listener bound to one or more of the default ports.


Packets are dropped, and on those self IPs, that port is not accepting packets. In above example, SSH does not work to one of the self IPs.


More than one self IP needs to be configured. One of these self IP adresses have a 'allow-service' defined as 'default' and also explicitly specify one of the default ports, like specifying 'tcp:https'.


Identify the self IP configuration that has both default and also explicitly specifies a default port. Remove the lines that explicitly specify the default port.

Fix Information

When more than one self IP is configured, those self IPs now correctly listen on default ports.

Behavior Change