Last Modified: Oct 19, 2025
Affected Product(s):
BIG-IP TMOS
Known Affected Versions:
16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2, 16.1.6, 16.1.6.1
Opened: Sep 14, 2023 Severity: 3-Major
If the gtm.allownxdomainoverride db key setting (available from 15.1.2) has been enabled on a BIG-IP system, this setting will be lost when upgrading to version 16.1.0 or later, where the functionality has been migrated to a native tmsh command.
Partial loss of configuration
- The db key gtm.allownxdomainoverride is enabled - Upgrade to BIG-IP version 16.1.0 or later
Set "gtm global-settings general allow-nxdomain-override enabled" after upgrading to restore the functionality that was previously enabled through the db key setting.
None