Last Modified: Oct 21, 2025
Affected Product(s):
BIG-IP Install/Upgrade, TMOS
Known Affected Versions:
17.1.3
Opened: Oct 21, 2025 Severity: 3-Major
After upgrading the system and rebooting, config load fails with an mcpd validation error: "IPv6 is not supported in 17.1.x and lower versions" "Unexpected Error: Loading configuration process failed."
Validation does not accept a hostname. Cannot add hostname as a server.
The TACACS server object is configured with a hostname. For example, the following TACACS+ configuration in the /config/bigip.conf auth tacacs /Common/system-auth { debug enabled protocol ip secret ***scrubbed*** servers { bigip.example.com } <<==== service ppp }
Use the IPV4 addresses of the TACACS server, instead of hostnames
None