DElegating an IP block

Barry Margolin barmar at genuity.net
Thu Aug 16 21:02:40 UTC 2001


In article <9lhabl$f4d at pub3.rc.vix.com>, Harison <harison at 888.net> wrote:
>
>If I want to delegate an IP block to another Nameserver  (20 IP's) how
>would I go about doing that...
>
>I got the cname part down:
>
>11.22.33.44.in-addr.arpa cname 11/14/28.22.33.44.in-addr.arpa

It should be:

11.22.33.44.in-addr.arpa. cname 11.14/28.22.33.44.in-addr.arpa.

>
>that would take care of 44.33.22.11 and I just do the other 19 the
>same...
>
>But shouldn't there be a ns record.  What if the name server I want to
>delegate to is on another subnet all together 65.11.22.1 for example? 
>What would the NS record look like?

You need to have NS records for 14/28.22.33.44.in-addr.arpa:

14/28.22.33.44.in-addr.arpa. IN NS otherserver1.otherdomain.com.
                             IN NS otherserver2.otherdomain.com.

It doesn't matter at all what subnet the server is on.

This is all explained in RFC 2317 and in the DNS & BIND book.  Just copy
their examples and you should be fine.

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.


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