no glue A record in child domain

[Tech W.]

--- On Sat, 18/7/09, Mark Andrews <marka at isc.org> wrote:

> From: Mark Andrews <marka at isc.org>
> Subject: Re: no glue A record in child domain
> To: "Tech W." <techwww at yahoo.com.cn>
> Cc: bind-users at lists.isc.org
> Received: Saturday, 18 July, 2009, 10:22 PM
> 
> In message <961314.13824.qm at web15606.mail.cnb.yahoo.com>,
> "Tech W." writes:
> > 
> > Hello gurus,
> > 
> > Say I have this glue record in parent's DNS:
> > 
> > child.example.com.  IN NS 
> ns.child.example.com.
> > ns.child.example.com. IN A  12.34.56.78
> > 
> > Then in child's zone file, I don't include the A
> record for  "ns.child.exampl
> > e.com.".
> 
>     Then you have a broken delegation.
>  
> > What will be happened? Does it affect client's query
> to other records in this
> > child domain?
> 
>     Lookups will fail sooner or later when
> the interative
>     resolver learns that the A record does
> not exist. 


Thanks Mark.
How will a LDNS behave under this case?

Regards,
Wah.



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