A question, is this appropriate for IP's in the private IP ranges?
Regards, Andy (www.linuxrx.com)
From: Glynn Clements <[EMAIL PROTECTED]>
Robert G. Fisher wrote:
> Does anyone know how I could delegate a subnet for DNS lookups?
>
> I know I can do something along the lines of
>
> 24.3.168.192-IN-ADDR-ARPA IN NS other-ns.domain.com
>
> or something along those lines ;-)
>
> But, curious how to do something for like the 192.168.3.24/28 network?
The following is from the BIND FAQ:
Question 5.4. Subnetted domain name service
Date: Mon Aug 5 23:00:16 EDT 1996
If you are looking for some examples of handling subnetted class C
networks as separate DNS domains, see the Internet Draft
draft-ietf-cidrd-classless-inaddr-02.txt
for more information. This file is available for anonymous ftp at
ds.internic.net :
/internet-drafts/draft-ietf-cidrd-classless-inaddr-02.txt
or other IETF mirror sites (ftp.is.ca.za [Africa], nic.nordu.net [Europe],
munnari.oz.au [Pacific Rim], ds.internic.net [US East Coast], or
ftp.isi.edu [US West Coast]).
Details follow- You need to delegate down to the fourth octet, so you will
have one domain per IP address ! Here is how you can subdelegate a
in-addr.arpa address for non-byte aligned subnet masks:
Take as an example the net 192.1.1.x, and example subnet mask
255.255.255.240.
We first define the domain for the class C net,
$origin 1.1.192.in-addr.arpa
@ SOA (usual stuff)
@ ns some.nameserver
ns some.other.nameserver
; delegate a subdomain
one ns one.nameserver
ns some.nameserver
; delegate another
two ns two.nameserver
ns some.nameserver
; CNAME pointers to subdomain one
0 CNAME 0.one
1 CNAME 1.one
; through
15 CNAME 15.one
; CNAME pointers to subdomain two
16 CNAME 16.two
17 CNAME 17.two
31 CNAME 31.two
; CNAME as many as required.
Now, in the delegated nameserver, one.nameserver
$origin one.1.1.192.in-addr.arpa
@ SOA (usual stuff)
NS one.nameserver
NS some.nameserver ; secondary for us
0 PTR onenet.one.domain
1 PTR onehost.one.domain
; through
15 PTR lasthost.one.domain
And similar for the two.1.1.192.in-addr.arpa delegated domain.
There is additional documentation and a perl script that may be used for
this purpose available for anonymous ftp from:
ftp.vix.com : /pub/bind/contrib/gencidrzone
--
Glynn Clements <[EMAIL PROTECTED]>
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