PTRs, PTRs everywhere (was: Should a nameserver know about itself?)
Sam Trenholme <namedroppers@artemas.reachin.com> Thu, 10 May 2001 07:14 UTC
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Date: Wed, 09 May 2001 17:08:23 -0700
From: Sam Trenholme <namedroppers@artemas.reachin.com>
To: dnsop@cafax.se
Subject: PTRs, PTRs everywhere (was: Should a nameserver know about itself?)
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> What does it mean to have a PTR record in anything other than the > in-addr.arpa tree? A PTR is a pointer to the FQDN for a given host name. So, for example, if artemas.reachin.com is the fully-qualified domain name for the ip of www.reachin.com, it can make sense to have something like: www.reachin.com IN PTR artemas.reachin.com. or, using MaraDNS' 'csv1' zone file format: Pwww.reachin.com.|3600|artemas.reachin.com. A valid, if pointless, use of the PTR record. Of course, as Cricket correctly pointed out, a more practical use is classless in-addr.arpa delegation. - Sam
- PTRs, PTRs everywhere (was: Should a nameserver k… Sam Trenholme