reverse zone delegation question

[Barry Margolin]

In article <e8m06b$1nbe$1 at sf1.isc.org>,
 dr sarcophagus <drsarcophagus at wharton.upenn.edu> wrote:
> ; --- 10.189.rev -----------------------------------------------------------
> $TTL	6h
> @			IN SOA	dns1.example.com. dns.example.com. (
> 				2006070612	21600	3600	3628800 21600)
> ;
> ;				Serial		Refresh Retry	Expire	Minimum
> ;				yyyymmddnn	6h	1h	42d	6h
> ;
> @			IN NS		dns1.example.com.
> 			IN NS		dns2.example.com.
> ;
> ; 10.189.0.0/16
> ;
> ; reverse mappings to hosts
> ;
> ;
> ; 10.189.0.0/24 - Loopback Addresses
> ;
> 1.0			IN PTR	a001.example.com.
> 2.0			IN PTR	a002.example.com.
> 3.0			IN PTR	a003.example.com.
> 4.0			IN PTR	a004.example.com.
> ;
> ; 10.189.16.0/24 - Server Farm
> ;
> 1.16			IN PTR	b001.example.com.
> 2.16			IN PTR	b002.example.com.
> 3.16			IN PTR	b003.example.com.
> ;
> ; 10.189.21.0/24 - delegate
> ;
> 21.189.10.in-addr.arpa.	IN NS	dns1.example2.com.

Are you sure you included the "." after "arpa" in the real file?  I 
suggest you be consistent: since you don't use the 
"189.10.in-addr.arpa." suffix on all your other records, leave them off 
this record as well, and write it as:

21 IN NS dns1.example2.com.

> ;
> ; 10.189.128.0/24 - User Network 1
> ;
> 1.128			IN PTR	c001.example.com.
> 2.128			IN PTR	c002.example.com.
> 3.128			IN PTR	c003.example.com.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
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