Domain and subdomain from the same IP

Dr. Muhammad Masroor Ali mmasroorali at
Sat Oct 6 18:13:40 UTC 2001

Hello all,
I am trying to serve a domain say, and its parent domain from the same static IP. While other settings are more or less
clear to me, I can not seem to understand how to set up the reverse zone

Say my ip address is p.q.r.s, so reverse lookup entry for, in the named.conf will be,

zone "" {
        type master;
        file "db.p.q.r";

and the file db.p.q.r will start with

@               IN      SOA

Now what entry do I make in named.conf for reverse zone lookup of and how do I start this file (perhaps the second answer is not
required when the first one is answered).

Any help will be appreciated,

Dr. Muhammad Masroor Ali

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