Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!usc!ucsd!ucbvax!ERG.SRI.COM!davy
From: davy@ERG.SRI.COM
Newsgroups: comp.protocols.tcp-ip.domains
Subject: Re: HINFO record consistency
Message-ID: <9011302233.AA11478@intrepid.erg.sri.com>
Date: 30 Nov 90 22:33:52 GMT
References: <1990-333-78765@uunic.uu.no>
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: inet
Organization: The Internet
Lines: 42


     From:  Erik Naggum <erik@naggum.uu.no>
     Date:  Fri, 30 Nov 1990 22:52:45 +0100
     Subject:  Re: HINFO record consistency 

     
     
     > Well, this sounded like an interesting idea, so I went and FTPed the RFC,
     > and installed all the stuff in my name server.  I have the following info
     > now for domain erg.sri.com, from a "dig erg.sri.com any" request:
     
     [ whole bunch of records deleted ]
     
     I think you missed a small point in RFC 1101.  The idea is to make one
     PTR RR for ERG.SRI.COM pointing at your class B network, and vice
     versa, but NOT to point to all subnets.  These would have their own
     IN-ADDR.ARPA PTR RRs pointing at the proper network name, such as
     ERG-SN-1.ERG.SRI.COM for subnet 1.  With the aid of the A RRs for the
     network number, you can find those subnets easy enough, anyway.
     
     That is, the PTR RR should be:
     
     erg.sri.com.    86400   PTR     0.0.18.128.in-addr.arpa.
     
     You now have significantly less data to stuff into the reply packet,
     and I believe the problems you experience will go away.  :-)
     
     [Erik]

Well, we (erg.sri.com) don't own the class B... that belongs to our parent
domain, sri.com.

But, you're right, I may have misinterpreted something.  I was looking on
page 6 of the RFC, which shows an example for MCC.COM, listing several
nets.  But, now that I look more closely, those are all different class C
nets, not subnets of the same class B.

Guess I'll have to beat on the sri.com administrator to put the top-level
things in, and go take those back out of my files.  Bother.

Thanks,
--Dave