Hello!
I have a problem in a new AOS 8.4.0.2 MM/MC deployment.
Under System -> General -> Domain Name System, the konfigured domain servers are not displayed.
It does not matter where we configure the DNS servers, on GUI (on Mobility Master level or on the MM itself, the same on MC and it's layers above) or at CLI.
If we insert the DNS servers, and click Apply - they are showing up for a part of a second and desappear again.
The interesting thing is, that the "Deploy Changes" button gets active, and we can deploy the DNS servers to the startup config.
On the CLI we can find the servers with command #show ip domain-name.
DNS discovery works without issues.
I can't find a known issue entry to this in any 8.4.x release note.
Does anybody saw this phänomen bevore?