Classless IN-ADDR.ARPA delegation
Henrik Samal
hsamal at start.no
Thu Nov 29 03:04:18 UTC 2001
Hello
We have been delegated a subnet of 8 IP addresses fom our ISP (217.13.31.120-127). The ISP is already doing reverse, but we want to controll the reverese ourself. So basically all the ISP has to do is to add CNAME records in their "31.13.217.in-addr.arpa" zone pointing to our nameserver, right?
This could be something like this:
120-127 NS ns.mydomain.no.
NS ns.someotherdomain.no.
120 CNAME 120.120-127
121 CNAME 121.120-127
...
127 CNAME 127.120-127
But how would our "120-127.31.13.217.in-addr.arpa." zone look like?
Maybe somthing like this: (?)
$TTL 6h
120-127.31.13.217.in-addr.arpa. IN SOA ns.mydomain.no. admin.mydomain.no. (
1 ; Serial
6h ; Refresh
3h ; Retry
1w ; Expire
1h ) ; Minimum
NS ns.mydomain.no.
NS ns.someotherdomain.no.
120 PTR host.mydomain.no.
121 PTR host1.mydomain.no.
...
127 PTR host7.mydomain.no.
Does this mean that ns.someotherdomain.no would transfer zone date from ns.mydomain.no when i update its "120-127.31.13.217.in-addr.arpa." zonefile ?
Thanks,
Henrik
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