I have my HAP AC connected via one of the LAN ports to my LAN/modem.
The HAP AC has a fixed IP inside my LAN. My modem is now the DHCP server on my LAN.
All wifi clients connect to the net/LAN without any problem in this setup.
But I can't check for new updates of the HAP AP like this
The HAP AP only got a LAN IP now but no gateway and no dns server configured.
How can I configure DNS/Gateway without messing up my current setup?