Answer Section or Authority Section?
David Botham
dns at botham.net
Tue Feb 4 01:56:25 UTC 2003
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> > What I have been able to piece together is that the C root server
> > [192.33.4.12] is a BIND9 server and responds with a *referral* to my
NS
> > query and the other roots are BIND8 and respond with *answers*. Am
I on
> > the right track?
Mark,
Thank you for the reply.
>
> Yes. The next release of BIND 8 will return referrals
> unless it is both offering recursion *and* recursion is
> requested. In otherwords it will lie less of the time.
>
> BIND 8 has a single database and is incapable of caching
> answers which would override glue records (NS/A/AAAA).
>
> BIND 9 has multiple databases and is capable of giving
> different answers depending upon whether recursion was
> available and requested or not. In other words it depending
> apon how the query was framed it will return glue or it
> will return the answers from the relevent child zone even
> when it conflicts with the glue.
Why does it matter *how* the query was made? I would think that there
is only one right response. In other words, from a given name server's
perspective, it should have a view of the name space and regardless of
*how* the question was asked, it should return that response.
Thanks again,
Dave...
>
> Mark
>
> > Thanks in advance,
> >
> >
> > Dave...
> >
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