To:
"Shane Kerr" <shane@ripe.net>, "Robert Elz" <kre@munnari.OZ.AU>
Cc:
<dnsop@cafax.se>
From:
"Cricket Liu" <Cricket@verisign.com>
Date:
Wed, 9 May 2001 17:29:41 -0600
Sender:
owner-dnsop@cafax.se
Subject:
Re: Should a nameserver know about itself?
> > Any domain can have any RR in it. Any time you're tempted to > > generalise based upon domain name, you're almost invariably > > going to be wrong. > > Okay, I'll bite. What does it mean to have a PTR record in anything > other than the in-addr.arpa tree? While in some ways all domains are > equal, can't we at least say that some domains are more equal than > others? :P See RFC 2317, section 5.2. It suggests that, since you're already adding CNAME RRs to an in-addr.arpa zone, e.g., 1.0.168.192.in-addr.arpa. IN CNAME <something> why not make that <something> a domain name in a zone the delegate already owns, e.g., 1.0.168.192.in-addr.arpa. IN CNAME 1.0.customer.example. Then the customer adds 1.0.customer.example. IN PTR foo.customer.example. to his zone data file. Ergo, a PTR RR in what's traditionally considered a forward-mapping zone. cricket