Re: [Doh] A question on the mix of DNS and HTTP semantics

Dave Lawrence <tale@dd.org> Mon, 19 March 2018 11:17 UTC

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Subject: Re: [Doh] A question on the mix of DNS and HTTP semantics
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Ted Hardie writes:
> but it can clarify at the DNS level that this was REFUSED.  The
> semantics of that are much closer to 451's meaning

Well, yes and no.  REFUSED is hopelessly overloaded, with only one of
its meanings being semantically in the neighborhood or 451.  It is
also used to signal lame delegations, and even rejecting an EDNS
option.  Thus we have a draft for extended errors in DNS responses to
make things clearer.