which is fair. It's be desirable in some cases. It's not in some other - when you need to validate.
To do edns you have to first know if the server you're querying supports it.
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no you don't have to, you try and 99% or so you're right. edns is now 15 years old.
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the bigger problem is stubs don't want to evolve with the spec, which makes me sad as server author :(
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The whole point of a standard protocol is that stubs don't have to evolve.
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RFC 1035 has everything a stub needs. Advanced features are for inter-DNS use, not stub-to-DNS.
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If a static-linked ping from 1989 doesn't work with your dns, it's your dns that's broken, not the stub.
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this is wrong analogy. You're asking for improved UX and refuse to use improved version of the protocol
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The "improved" version has worse ux. 4x or worse latency.
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again no, edns has nothing to do with latency.
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