So I run Docker on my Debian server.( Qotom SFF intel pc) This runs AdGuard Home, Whoogle and others Containerised applications.. Adguardhome (AG)connect DNS over QUIC back to Adguard DNS servers. (it does require a valid Certificate. this is generated by the DDNS on the Asus 86u( I can also select several types of public DNS servers should I wish. I also use AdGuard Home as my DHCP server which takes a bit of load away from the RT-AC86U running Merlin 386.2_2. I prefer AG over PI Hole .. its just my preference as it natively supports encrypted DNS. The 86U just forwards all DNS to AG or the DHCP clients send DNS direct to AG. I have even tried DoT to the AG and that works fine over my internal network. Given Docker can be configured to automatically update the Conatiner images (AG, WHoogle etc) its just sits there and ticks over whiout any issue. The Debian server checks daily for updates and applies updates in the background. Fo me its a low maintenace solution.