I agree, it's arbitrary. If you are wanting to format the name of your zone similarly to the RFC, I believe the format would be 96/27.51.212.195.in-addr.arpa (for the subnet 195.212.51.96/27).
________________________________ From: bind-users-boun...@lists.isc.org on behalf of Alan Clegg Sent: Sun 3/15/2009 4:55 PM To: bind-users@lists.isc.org Subject: Re: PTR zone / VLSM issue Charles Lee wrote: > I believe its format should be: 96-127.51.212.195.in-addr.arpa > > The problem I seem to be having is what order the 96-127 should be in, > because in normal format the network is 195.212.51.96-127 (we basically > run address .96 to address .127) > > Can anyone help out with the proper format of the zone and what a PTR > record would look like? It matters not a bit nor a twiddle, as it is just a label that needs to be "pointed to" by the actual in-addr label elsewhere. 96.fred.51.212.195.in-addr.arpa. IN PTR mymachine.foo.com. would work fine as long as you had: fred.51.212.195.in-addr.arpa. IN NS delegated.foo.com. 96.51.212.195.in-addr.arpa. IN CNAME 96.fred.51.212.195.in-addr.arpa. on the nameserver that was actually delegated 51.212.195.in-addr.arpa. (feel free to use $GENERATE to create the above CNAMEs) AlanC
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