Path: utzoo!utgpu!watserv1!watmath!att!news.cs.indiana.edu!samsung!cs.utexas.edu!usc!jarthur!nntp-server.caltech.edu!heather
From: heather@truebalt.caltech.edu (Heather L. Sherman)
Newsgroups: comp.protocols.tcp-ip.domains
Subject: Delegating part of a subdomain
Message-ID: <1990Dec15.014421.4519@nntp-server.caltech.edu>
Date: 15 Dec 90 01:44:21 GMT
Sender: heather@nntp-server.caltech.edu (Heather L. Sherman)
Organization: California Institute of Technology, Pasadena
Lines: 19

What's the best way to delegate PART of an in-addr.arpa subdomain to another
nameserver?  A group on campus will be sharing a gateway and subnet with a
couple of other groups.  They already nameserver for their subdomain and 
would like to nameserve for their section of the subnet as well. 
What's the best way to delegate something like:

151.4.215.139.in-addr.arpa  through 200.4.215.139.in-addr.arpa ?

Their suggestion has been to stick CNAMES in for all these to a subdomain
(151.name.4.215.131.in-addr.arpa) and delegate name.4.215.131.in-addr.arpa.

If we instead use NS records for each address, must there also be a
matching SOA record on the delgatee's end for each address?  Which 
method will cause the least unnecessary activity on the nameserver's part?
Any ideas or warnings?

Thanks!  
Heather Sherman
heather@iago.caltech.edu