And the "SHOULD try...TCP" is conditional on "if the requester supports TCP".
It's not my setup but a user who encountered failed lookups in musl-based containers using 8.8.8.8.
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okay, and something is preventing the stub to use edns?
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Our stub resolver intentionally doesn't do edns or tcp, for several reasons.
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Low latency, statelessness, ability to use same query packet concurrently w/multiple servers, etc.
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Also bounding the size of the response.
End of conversation
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