DBotham at OptimusSolutions.com
Wed Nov 3 21:37:47 UTC 2004
bind-users-bounce at isc.org wrote on 11/03/2004 03:53:33 PM:
> We just started using a new ISP for connectivity at our offices. They're
> a reseller of another, national ISP.
> I'm trying to get them to set up delegation of reverse DNS for our
> network. I believe the reseller has some access to the larger ISPs DNS
> systems so that they can set up PTR records or CNAMEs in the
> zones for their customers. I'm not sure that they can create NS records
> to delegate subzones, however.
> Instead of them doing a fairly standard RFC 2317 delegation, as we've
> always done with our providers
> 0-26 IN NS ns1.mydomain.com.
> IN NS ns2.mydomain.com.
> $ORIGIN .
> 0 IN CNAME 0.0-126.96.36.199.in-addr.arpa.
> 1 IN CNAME 1.0-188.8.131.52.in-addr.arpa.
> 2 IN CNAME 1.0-184.108.40.206.in-addr.arpa.
> would the following, without creating a delegated subzone, work just as
> well, or are there potential problems?
> $ORIGIN .
> 0 IN CNAME 0-officenet.mydomain.com.
> 1 IN CNAME 1-officenet.mydomain.com.
> 2 IN CNAME 2-officenet.mydomain.com.
If you are say that in the 2.168.192.in-addr.arpa zone you want to put
15 IN CNAME host-15.domaina.com
16 IN CNAME host-16.domaina.com
and in the zone file for domaina.com you want to put things like:
host-15 IN PTR www.domaina.com.
host-16 IN PTR www.someotherdomain.com.
Then, yes it will work. As a matter of fact, this naming convention is
outlined as a alternate method in RFC2317.
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