troubles with classless in-addr.arpa

[Barry Margolin]

In article <8c5kvm$iul$1 at news.hamburg.pop.de>,
D.Scherbarth <dscherbarth at hanse-net.de> wrote:
>Hi everyone,
>I've to implement an DNS in our Intranet. We're
>using class-B networks; for this domain (A.de.)
>I've implemented an DNS - no problem ...
>But there are also DDNS-server (DHCP) in the
>domain; these server are managing a part of the
>network (for examp.: 190.1.35.0 to 190.1.40.254) -

If you're not using officially-assigned addresses, why aren't you using RFC
1918 private addresses, e.g. the class B block 172.16.0.0

>so I delegated a subdomain (DDNS.A.de.) to them.
>The 1.190.in-addr.arpa domain is now my problem.
>I think I've to delegate the in-addr.arpa ip-section
>(190.1.34.0 to 190.1.40.254) to the DDNS-servers
>like ISPs are doing (classless in-addr.arpa).
>
>So I've read the draft cidrd-classless-inaddr-02.txt
>but I've got dark troubles to implement it (bind 8)
>(extra-pointers and so on) ...

The special "classless in-addr.arpa" technique is normally only appropriate
if you're delegating a block smaller than a class C.  In your case you're
delegating entire class C-sized blocks, so you can do ordinary delegation.
In the 1.190.in-addr.arpa zone file, just put:

35 IN NS ...
36 IN NS ...
37 IN NS ...
38 IN NS ...
39 IN NS ...
40 IN NS ...

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
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