Bug ID 462879: Self IP netmask change can invalidate a gateway address

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0

Opened: May 16, 2014

Severity: 3-Major

Related Article: K92674823

Symptoms

Self IP netmask change can invalidate a static route gateway address, when the new network (with the new netmask) no longer encompass an existing static route gateway address.

Impact

Gateway address unreachable after change; Prevent the loading of configuration after the change; possible reboot failure after the change.

Conditions

Changing the Self IP netmask to a bigger value (smaller network), while there are existing static route gateway entries in the original network.

Workaround

Create another Self IP with netmask covering the gateway address or remove the gateway address.

Fix Information

Validation will no longer allow changes to Self IP netmask that invalidates an existing static route gateway address.

Behavior Change

Will no longer allow selfip netmask changes that invalidate a static route gateway address, to occur.

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips