Originally Posted by
docbert
You'll probably find that if you simply block it from getting to 8.8.8.8 and 8.8.4.4, or just block all outgoing port 53 except to where you want DNS to go, then it'll start working as you want. I've seen devices do this before - they try 8.8.8.8 or similar, but if they can't get to there then they'll use what DHCP has told them to use.
eh, if I’m going to set a rule in the router I’ll just force everything to NextDNS.