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by tresni 3371 days ago
Definitely this. Also lots of weird hardware/software out there that tends to discard packets it can't understand (i.e. this doesn't look like a DNS packet going to port 53, let's drop it.) 443 generally works as it is expected to be encrypted by most middleware.

I would also say that most DNSCrypt-capable providers I know of can also do it on port 53.