classless ptr setup

[johnh at primebuchholz.com]

In your zone file for the class c (x.y.z), you'd create a delegation like 
this in the zone file:

; For 0-127
0/25     NS   some.server.
0/25     NS   some.other.server.
1   CNAME   1.0/25.z.y.x.in-addr.arpa.
2   CNAME   2.0/25.z.y.x.in-addr.arpa.
...
; For 128 on...
128/25   NS  some.server.
128/25   NS   some.other.server.
129   CNAME   129.128/25.z.x.y.in-addr.arpa.
130   CNAME   130.128/25.z.x.y.in-addr.arpa.
...

...then the servers you delegated to have this:

named.conf:

zone "0/25.z.y.x.in-addr.arpa" {
...
...
}

...and in the zone file:

1   PTR   some.host.
...

as normal.

HTH,

-John




From:   Jim Pazarena <bind at paz.bz>
To:     bind-users at lists.isc.org
Date:   01/20/2014 01:43 PM
Subject:        classless ptr setup
Sent by:        bind-users-bounces+johnh=primebuchholz.com at lists.isc.org



I have a full /24, which I would like to separate into two /25's, and
assign each half to two of my customers. The snag is that *I* maintain
the DNS for each of these customers.

Is it possible to create the classless setup within my system so that it
starts with the /24 but can assign the two classless /25's ?

If so, I am stumped on the setup. Any help would be appreciated.
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