That is no longer the case. It doesn't respond authoritative on the first query.
-Ben Croswell On Jan 30, 2011 10:01 AM, "Kevin Oberman" <ober...@es.net> wrote: > On Sat, 2011-01-29 at 14:49 +0800, p...@mail.nsbeta.info wrote: >> The book "Pro DNS and BIND" says: >> >> If the caching server obtains its data directly from an authoritative DNS, >> then it too will respond as authoritative. Ohterwise, if the data is >> supplied from its cache, the response is nonauthoritative. >> >> So this means even for a cache only server it can answer with authoritative >> response? I have been thinking the cache only server shouldn't do this. >> >> Regards. >> _______________________________________________ >> bind-users mailing list >> bind-users@lists.isc.org >> https://lists.isc.org/mailman/listinfo/bind-users > > If the caching-only server does not have an answer to a query in its > cache and recurses and gets an authoritative response, it, too, will set > the AA bit. If it gets another query for the name that is now cached, > the AA bit will not be set. Further, if any host responding to a query > already has the information in cache, the AA bit will not be set. > > In simple terms, if the response to a query comes directly from > information at an authoritative source, the AA bit is set. > > _______________________________________________ > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users
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