On 19 March 2018 at 08:21, Matthijs Mekking <[email protected]> wrote:
> I and some others have been using the term 'Negative response' to indicate > that the response does not contain any records in the Answer section. > Current definition seems to imply that this is only the case if the RCODE > is NXDOMAIN, NOERROR, SERVFAIL or if there was a timeout (unreachable). The > definition I have been using includes responses with other RCODEs too, for > example FORMERR or REFUSED. > I wonder if this is just me and my bubble or if others also a slightly > different meaning of 'Negative response' as it is defined now. If there are > others, is it worth spending a line or two about this here? > I would suggest that only NXDOMAIN and NOERROR+ANCOUNT=0 are negative responses. SERVFAIL, FORMERR, and REFUSED are error responses; you do not know as a result of those responses whether the name/type tuple queried about exists.
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