Hello,
I would like to install AGH on my Qnap containerstation to free up memory on the AX-1800 router but I encounter two problems:
whenb configuring AGH on Qnap it says "listen tcp 0.0.0.0:53: bind: address already in use"
I tried stopping the systemd-resolved.service but AX-1800 does not recognize that command.
If point 1) is resolved, how can I set the AX-1800 DHCP to use the AGH DNS server on my Qnap?
PS: I want to keep my DHCP server on the AX-1800
Thank you very kindly.
Tom
Let us achieve your 1&2 easier, as the screenshot, enter the manual DNS address in the GL router, meanwhile the router as well as keep the DHCP server.
And do not require to disable the 'resolved.service' in the router.
Just make sure that the AGH server on your QNAP does not use the router as upstream DNS 
Thats right, in additional one point:
Thank you for your quick replies.
I disabled the AGH on the router. adjusted the DNS settings in the router and tried to setup the AGH on Qnap. On the first setup page of AGH , I can't bypass the error "listen tcp 0.0.0.0:53: bind: address already in use".
I tried to ignore the error but I do not have an internet connection after the changes made.
This is some AGH question and not related to GL in general.
Port 53 (DNS) is used for, well, DNS thingy. If your docker container uses the same IP as your NAS, it won't work if there is another service listening on this IP. So you might need to use Docker with a dedicated IP instead of NAT.
But, I changed the fixed ipaddress and even it wasn't a GL general question, your reply helped me. Thank you @admon
greetings, Tom
