That will definitely work for a Pi-Hole or AdGuard Home. If it has 2 network controllers, you could even set it up as a router and firewall with OPNsense. That would allow you to do even cooler stuff like DNS packet redirection for devices/applications that have a hardcoded DNS server.
I have an old Intel nuc that I could slap a hard drive in. It wouldn’t have to handle all traffic, right?
That will definitely work for a Pi-Hole or AdGuard Home. If it has 2 network controllers, you could even set it up as a router and firewall with OPNsense. That would allow you to do even cooler stuff like DNS packet redirection for devices/applications that have a hardcoded DNS server.