NS record for the @ entry

[Edmund]

So, is it true that if the my primary DNS server has the @ entry
with NS records which is different from my parent zone NS records
(one of these NS record is pointing to my primary DNS server),
then query for NS record for my zone would return the set of
NS records from the @ entry instead of from those NS records in
my parent zone ???

marka at isc.org wrote:

>         SOA stands for Start Of Authority.  All RRs at or below the
>         SOA belong to the zone, until a new SOA is reached.  This
>         includes NS records.  The parent zone only contains copies
>         of the NS records.  If the parent server also serves the
>         child zone it will return the NS rrset from the child zone
>         and not the parent zone if they differ.
>
>         Mark
>
> >
> > Michael Voight wrote:
> >
> > > What do you mean the NS record for the SOA.
> > > The SOA and NS record are 2 different things.
> > >
> > > There is no requirement for you to have an NS record for the primary
> > > server. You may not want to advertise that machine as a nameserver.
> > >
> > > Michael
> > >
> > > Edmund wrote:
> > > >
> > > > Thanks.  Can it be possible that the NS record for the SOA is not pointin
> > g
> > > >
> > > > to the local machine ??
> > > >
> > > > marka at isc.org wrote:
> > > >
> > > > > > Does anyone know why there must be a NS record for the @ entry ?
> > > > > > As my understanding, the NS record is pointing to the local machine
> > > > > > and it is the local machine the SOA for this zone, so why is the NS
> > > > > > record still necessary for the @ entry ???
> > > > >
> > > > >         Because that is the definition of a zone.  All zones contain
> > > > >         a SOA record and a NS RRset at the top of a zone.  NS records
> > > > >         in parent zones are supposed to be *copies* of the child zones
> > > > >         NS records.
> > > > >
> > > > >         Mark
> > > > > --
> > > > > Mark Andrews, Internet Software Consortium
> > > > > 1 Seymour St., Dundas Valley, NSW 2117, Australia
> > > > > PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org
> >
> >
> --
> Mark Andrews, Internet Software Consortium
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org