Bug ID 596556: Deleting self-ip that could possibly strand pool member will throw warning instead

Last Modified: Dec 20, 2018

Bug Tracker

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

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4

Fixed In:
13.0.0

Opened: May 31, 2016
Severity: 3-Major

Symptoms

Previously, validation would prevent self-ip from being deleted, if the self-ip could possibly strand a pool member.

Impact

You will be unable to delete the self-ip address. Mcpd will throw an error "Cannot delete IP 10.10.10.1 because it would leave a pool member (pool /Common/mypool) unreachable."

Conditions

Deleting a self-ip, and the self-ip could be use to reach an existing pool member

Workaround

Use one of the following workarounds: 1. Delete the pool member first, and then delete the self-ip 2. Change the self IP Netmask to 255.255.255.255 and then delete the self IP

Fix Information

It's possible to delete a self-ip that have the same network as a pool member, which will throw a warning instead, where previously it was preventing the deletion from happening.

Behavior Change