In message <>, Valentin Nechayev writes:
> Hi,
> Fri, Oct 24, 2008 at 08:59:20, Mark_Andrews wrote about "Re: glue records in
> child zone":
> > Except it isn't authoritative. It is GLUE.
> >
> > When you query for a zone's NS RRset there is no need to
> > return any additional records.
> >
> > The time when additional records are necessary is when there
> > is a referral. At all other time additional records are
> > completely optional.

> OK, understood. But there is another question for this case. In the
> initial example, query of address of from NS of
> gives only referral response to NSes of, in
> spite of record for is present in the
> zone itself. Am I correct that presence of NSes of is
> enough to treat by modern named that ` A' shall be
> ignored during learning of contents of

Not returned on direct query. I can be returned in a referral.

> If yes, why knows IP address of
> and authoritatively tells it in response to direct query?

Because the Atlas servers are based on old code and because
there are delegations that only work in COM and NET because
the servers promote glue to answer.

Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: