AdGuard Home: Network-Wide DNS Filtering with Failover

DNS is the single point of failure that makes everyone in the house complain that "the internet is down" when, in reality, your DNS container just crashed. I've spent too much time as the sole admin of my network having to manually flip DNS settings on my router because a single AdGuard Home instance decided to stop responding. If you're running this in a homelab, you can't just set it and forget it. You need a failover strategy that doesn't require you to touch a CLI while your family is starin