about resolving on a child zone

[Barry Margolin]

In article <gs0ld2$2qob$1 at sf1.isc.org>,
 "Tech W." <techwww at yahoo.com.cn> wrote:

> --- On Tue, 14/4/09, Chris Buxton <cbuxton at menandmice.com> wrote:
> 
> > From: Chris Buxton <cbuxton at menandmice.com>
> > Subject: Re: about resolving on a child zone
> 
> > 
> > In this case, the answer is that your main zone
> > (example.com) will have an error, because it will have an A
> > record below the "bottom" of the zone that is not a glue
> > record. In other words, it will recognize that
> > www.my.example.com belongs to my.example.com, not to
> > example.com.
> > 
> 
> Thanks Chris for the good info.
> How about this case below?
> 
> my.example.com.  IN  NS  ns.my.example.com.
> ns.my.example.com.  IN  A  11.22.33.44
> 
> 
> Under this case, the A record for ns.my.example.com. will be defined in main 
> DNS or "ns.my.example.com" or both?

There's a special exception made for "glue" records, since they're 
needed to prevent an infinite recursion.  The parent zone will include 
this A record.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE don't copy me on replies, I'll read them in the group ***