Date: Thu, 11 May 2000 14:32:56 -0400 From: Mitch Collinsworth <mkc@Graphics.Cornell.EDU> To: Rudy Rucker <rudy@dipsy.monkeybrains.net> Cc: Marius Vincent <mvincent@elcb.co.za>, freeBSD-Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: Block and reverse DNS. Message-ID: <200005111832.OAA87348@larryboy.graphics.cornell.edu> In-Reply-To: Message from Rudy Rucker <rudy@dipsy.monkeybrains.net> of "Thu, 11 May 2000 11:09:46 PDT." <Pine.BSF.4.21.0005111058250.1366-100000@dipsy.monkeybrains.net>
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>> Basically, there >> is nothing special about reverse lookups except for converting the IP >> address into in-addr.arpa notation before starting. > >There is one unique difference. Besides the fact that this has nothing to do with the question that was asked "How do reverse lookups work?", there is nothing unique about this. All DNS delegations are managed by working out the details with the manager of the parent zone. If you have a .com domain, the manager of the parent zone is the Internic. If you have an .in-addr.arpa zone, the manager of the parent zone is whoever you obtained your IP space from. The fact that some zone managers are better organized than others is nothing new and doesn't change the mechanical details of how it all fits together. Now if your IP subnet happens to be less than a /24, there are some unique issues you have to deal with in configuring the in-addr.arpa delegation since it doesn't fit along a zone boundary. But even this doesn't change _how_ reverse lookups are done. >If you have a Class C address, and reserve a domain through Internic, it >is easy to specify what DNS server that domain should use. If you Get a >Class C address, and wish to host the in-addr.arpa you are at the *mercy* >of your upstream provider's technical support team. It took Verio 3 >months to corrently configure their DNS servers to slave off of my DNS >server. -Mitch To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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