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Re:My Chromecast Ultra would not start until I began answeri... by mthoms on Friday February 15, 2019 @12:56PM (#19173066)
>It seems unlikely to me that the DNS client has the sophistication to know that it's not Google's 8.8.8.8 that it's talking to

I don't know much about DNS but based on what I do know I would think this to be trivial(?). All you'd need to do is make a request for a domain that doesn't exist. Something like "is-this-google-dns-im-connecting-with.google" or <salted hash of current timestamp>.com. Google DNS could be coded to respond accordingly.

So no DNS response, or not the response you were expecting = not Google DNS.

Re:My Chromecast Ultra would not start until I began answeri... by cwkoss on Friday February 15, 2019 @02:17PM (#19173818)
Clever, kind of reminds me of how map makers insert fake 'trap streets' to prove copyright theft.