Large reverse in-addr.arpa delegation (Revisited)
David Botham
dns at botham.net
Mon Feb 17 20:07:00 UTC 2003
I have gone back to your original email...
> -----Original Message-----
> From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org] On
> Behalf Of Hulman, Patrick (CCI-Atlanta)
> Sent: Wednesday, February 12, 2003 11:35 AM
> To: bind-users at isc.org
> Subject: Large reverse in-addr.arpa delegation
>
> I'm trying to delegate large chunks of ip space. I'm using a 10
network =
> where I need to delegate three /16 and a /21 to different servers. In
=
> this case i want to delegate 10.2.x.x/15 to ns1.foo.com and
ns2.foo.com, =
> 10.4.x.x to ns1.foo2.com ns2.foo2.com and 10.5.200.0/21 to
ns1.foo3.com =
> and ns2.foo3.com
10.2.0.0/15 could be done like this:
2.10.in-addr.arap IN NS ns1.foo.com.
2.10.in-addr.arap IN NS ns2.foo.com.
3.10.in-addr.arap IN NS ns1.foo.com.
3.10.in-addr.arap IN NS ns2.foo.com.
These two delegations cover all the addresses in the requested range,
that is 10.2.0.0 to 10.3.0.0.
This would work for the 10.4.0.0 section (note that I assume this is
*not* a /15).
4.10.in-addr.arap IN NS ns1.foo2.com.
4.10.in-addr.arap IN NS ns2.foo2.com.
For the 10.5.200.0/21, these would work:
200.5.10.in-addr.arpa IN NS ns1.foo3.com.
200.5.10.in-addr.arpa IN NS ns2.foo3.com.
201.5.10.in-addr.arpa IN NS ns1.foo3.com.
201.5.10.in-addr.arpa IN NS ns2.foo3.com.
202.5.10.in-addr.arpa IN NS ns1.foo3.com.
202.5.10.in-addr.arpa IN NS ns2.foo3.com.
203.5.10.in-addr.arpa IN NS ns1.foo3.com.
203.5.10.in-addr.arpa IN NS ns2.foo3.com.
204.5.10.in-addr.arpa IN NS ns1.foo3.com.
204.5.10.in-addr.arpa IN NS ns2.foo3.com.
205.5.10.in-addr.arpa IN NS ns1.foo3.com.
205.5.10.in-addr.arpa IN NS ns2.foo3.com.
206.5.10.in-addr.arpa IN NS ns1.foo3.com.
206.5.10.in-addr.arpa IN NS ns2.foo3.com.
207.5.10.in-addr.arpa IN NS ns1.foo3.com.
207.5.10.in-addr.arpa IN NS ns2.foo3.com.
Does that help?
Dave...
>
> My question is how would the 10.in-addr.arpa look
>
> would it be
> 0.2.10.in-addr.arpa. 86400 IN NS ns1.foo.com.
> 0.2.10.in-addr.arpa. 86400 IN NS ns2.foo.com.
> 1.2.10.in-addr.arpa. 86400 IN NS ns1.foo.com.
> 1.2.10.in-addr.arpa. 86400 IN NS ns2.foo.com.
> .
> .
> .
> 254.3.10.in-addr.arpa. 86400 IN NS ns1.foo.com.
> 254.3.10.in-addr.arpa. 86400 IN NS ns2.foo.com.
> 255.3.10.in-addr.arpa. 86400 IN NS ns1.foo.com.
> 255.3.10.in-addr.arpa. 86400 IN NS ns2.foo.com.
>
>
> 0.4.10.in-addr.arpa. 86400 IN NS ns1.foo2.com.
> 0.4.10.in-addr.arpa. 86400 IN NS ns2.foo2.com.
> 1.4.10.in-addr.arpa. 86400 IN NS ns1.foo2.com.
> 1.4.10.in-addr.arpa. 86400 IN NS ns2.foo2.com.
> .
> .
> .
> 254.4.10.in-addr.arpa. 86400 IN NS ns1.foo2.com.
> 254.4.10.in-addr.arpa. 86400 IN NS ns2.foo2.com.
> 255.4.10.in-addr.arpa. 86400 IN NS ns1.foo2.com.
> 255.4.10.in-addr.arpa. 86400 IN NS ns2.foo2.com.
No, this is not necessary unless you are delegating to different name
servers.
>
> 200.5.10.in-addr.arpa. 86400 IN NS ns1.foo3.com.
> 200.5.10.in-addr.arpa. 86400 IN NS ns2.foo3.com.
> 201.5.10.in-addr.arpa. 86400 IN NS ns1.foo3.com.
> 201.5.10.in-addr.arpa. 86400 IN NS ns2.foo3.com.
> .
> .
> .
> 207.5.10.in-addr.arpa. 86400 IN NS ns1.foo3.com.
> 207.5.10.in-addr.arpa. 86400 IN NS ns2.foo3.com.
> 207.5.10.in-addr.arpa. 86400 IN NS ns1.foo3.com.
> 207.5.10.in-addr.arpa. 86400 IN NS ns2.foo3.com.
This is correct for the 10.5.200.0/21, just as you have shown it below.
> or=20
>
> 2.10.in-addr.arpa. 86400 IN NS ns1.foo.com.
> 2.10.in-addr.arpa. 86400 IN NS ns2.foo.com.
> 3.10.in-addr.arpa. 86400 IN NS ns1.foo.com.
> 3.10.in-addr.arpa. 86400 IN NS ns2.foo.com.
Yup, this covers the 10.2.0.0/15.
> 4.10.in-addr.arpa. 86400 IN NS ns1.foo2.com.
> 4.10.in-addr.arpa. 86400 IN NS ns2.foo2.com.
And this covers the 10.4.0.0/16.
>
> 200.5.10.in-addr.arpa. 86400 IN NS ns1.foo3.com.
> 200.5.10.in-addr.arpa. 86400 IN NS ns2.foo3.com.
> 201.5.10.in-addr.arpa. 86400 IN NS ns1.foo3.com.
> 201.5.10.in-addr.arpa. 86400 IN NS ns2.foo3.com.
> .
> .
> .
> 207.5.10.in-addr.arpa. 86400 IN NS ns1.foo3.com.
> 207.5.10.in-addr.arpa. 86400 IN NS ns2.foo3.com.
> 207.5.10.in-addr.arpa. 86400 IN NS ns1.foo3.com.
> 207.5.10.in-addr.arpa. 86400 IN NS ns2.foo3.com.
And yes, this covers the 10.5.200.0/21.
Hope this helps. The perl script to automate the generation of these
delegations should be fairly straight forward.
Dave...
>
> or is it something else entirely
>
>
> patrick
>
>
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