this post was submitted on 18 Sep 2025
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Not to be pedantic, but a pihole is legitimate DNS. Being able to do your own DNS has always been a fundamental part of the Internet Protocol, and is used a lot in enterprise to handle name resolution for internal subnets and stuff like that.
Being pedantic is totally OK here - we're talking about SSL's spoof protection. I'll have to look up how any rando can host a DNS that supports DNS/HTTPS when a system would be expecting a valid SSL cert that declares who it was issued to and by whom and the requester is expecting a particular whom.
unbound, bind, or if you want a gui then technitium DNS.
but this thread is so, so full of misinfo. you don't need a local doh capable DNS server at home. having one won't solve anything either, because your advertising fridge won't be using it. that's the actual problem. you need to block any doh servers that the fridge might access (and regular DNS servers too), so that it doesn't have a choice but respect your pihole, but that is very difficult because doh traffic looks like regular web traffic (because it is). yeah the fridge does not need to load websites, but it does all its questionably useful functions through HTTPS APIs too, so if you want to give it internet, you can't just block web traffic for it.