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Re: [cobalt-users] RaQ4 nslookup doesn't work
- Subject: Re: [cobalt-users] RaQ4 nslookup doesn't work
- From: "Gerald Waugh" <gerald@xxxxxxxxx>
- Date: Thu Nov 22 04:42:04 2001
- List-id: Mailing list for users to share thoughts on Cobalt products. <cobalt-users.list.cobalt.com>
> I found a file called /etc/named/pri.0.0.127.in-addr.arpa.
You need to create a PTR record in the GUI.
Then you should have a file reveres.ip...in-addr-arpa
Be careful though the cobalt GUI defaults to a /24 network
You need to edit the record and set it to /?? [what ever you have]
If you do not have a full /24 network, you may need to
contact your ISP and tell them you want PTR records in
accordance with RFC-2317.
A typical RFC-2317 compliant delegated subnet would have a name;
pri.32-28.3.2.1.in-addr.arpa this would be a file for a /28 subnet
A /28 subnet has 16 ip addresses
A /29 subnet has 8 ip addresses
A /30 subnet has 4 ip addresses And that's as small as it gets!
A subnet has to have a network address, a gateway address, a broadcast address.
So, a /30 subnet only has one useable ip address.
Setup your PTR record for the domain, and talk to your ISP
about RFC-2317 classless IN-ADDR.ARPA delegation
Gerald