Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!uakari.primate.wisc.edu!ames!uhccux!munnari.oz.au!manuel!ccadfa!sserve!cjsv From: Christopher-Vance@adfa.oz.au (Christopher JS Vance) Newsgroups: comp.protocols.tcp-ip.domains Subject: Re: Subnets and IN-ADDR.ARPA Keywords: subnets IN-ADDR.ARPA Message-ID: <1991Apr12.000620.19413@sserve.cc.adfa.oz.au> Date: 12 Apr 91 00:06:20 GMT References: <1991Apr11.090926.24784@bernina.ethz.ch> Sender: cjsv@sserve.cc.adfa.oz.au (Christopher J S Vance) Organization: Computer Science, Univ. of NSW, ADFA Canberra, Australia Lines: 23 In article <1991Apr11.090926.24784@bernina.ethz.ch> karrer@bernina.ethz.ch (Andreas Karrer) writes: | rob@cs.aukuni.ac.nz (Rob Burrowes ) writes: | | >Our domain is cs.aukuni.ac.nz and the server(s) look after addresses | >130.216.32.x through 130.216.39.x. These being subnets 32 - 39 of 130.216. | The problem is that the DNS has no concept of IP subnetting. I guess in your | case you could have a SOA field for each subnet, e.g. the cs.aukuni.ac.nz | servers would have 8 SOA RR's as in: | | $ORIGIN 32.216.130.in-addr.arpa. | @ IN SOA .... | | in their reverse tables, whereas the aukuni.ac.nz servers would have authority | SOA RR's for the other 246 subnets. Clumsy, but manageable. But you only need to delegate the ones not served by aukuni.ac.nz. The undelegated subnets are already part of the parent zone, and are already handled adequately by aukuni.ac.nz. There is no requirement of symmetry. Rob already has his DNS working properly now. -- Christopher