Bug ID 424728: ZebOS: BGP peer-groups with a member using address-family IPv6 will not behave correctly after restart

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
11.3.0, 11.4.0, 11.4.1

Fixed In:

Opened: Jul 08, 2013
Severity: 3-Major
Related AskF5 Article:


After restart, BGP may lose address-family IPv6 configuration and does not perform as expected.


BGP might not perform as expected after a system/tmrouted/bgpd restart.


When a BGP peer-group is configured, enabling one of the members for address-family IPv6, saving and restarting leaves the configuration in an unexpected state.


Do not use peer groups whose neighbors don't all use the same address-family configuration. See Comment 13 for more details.

Fix Information

BGP address-family IPv6 configuration is correctly saved.

Behavior Change