PTR zone / VLSM issue
Alan Clegg
Alan_Clegg at isc.org
Sun Mar 15 21:55:47 UTC 2009
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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