Date: Wed, 11 Oct 2000 18:40:48 -0700 (PDT) From: Dan Busarow <dan@dpcsys.com> To: yvonne kravitz <yvonnek@switchpwr.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: DNS setup on small class c network Message-ID: <Pine.BSF.3.96.1001011182853.147D-100000@java.dpcsys.com> In-Reply-To: <39E4FC3E.BB2EDC42@switchpwr.com>
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On Wed, 11 Oct 2000, yvonne kravitz wrote:
> I have a small section of a c class network 12.14.48.16-> 12.14.48.31
> (nw->broadcast) ns at 12.14.48.19 and ns1 at 12.14.48.20
> 16 ip's /28 how do i handle named.conf, db.network.com and
> network-reverse files for this network ? Anyone have a similar situation
>
> and care to comment.( this network has been up running primary DNS for
> over 2 years, however reverse dns needs work. Thanks in advance for an
> input.
You have to work this out with your ISP. Nothing you do on your own
can make it work.
They need to delegate your subnet within the reverse zone they
maintain. They will delegate a zone with an extra octet. If
you had the full /24 they would delegate 48.14.12.in-addr.arpa
to you. With just that subnet they will make up a zone name,
commonly something like 16/28.48.14.12.in-addr.arpa
The zone they delegate is the key to your named.conf setting.
Following the example above the named.conf entry would look
like
zone "16/28.48.14.12.in-addr.arpa" {
type master;
file "db.16-28.48.14.12.in-addr.arpa";
}
The reverse zone itself looks normal as long as you use the @ shortcut.
This is for a /28 from 161 to 174
$TTL 86400
@ IN SOA ns.example.com. root.ns.example.com. (
2000101002 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS ns.example.com.
IN NS ns2.isp.net.
IN NS ns3.isp.net.
161 IN PTR host161.example.com.
162 IN PTR host162.example.com.
163 IN PTR host163.example.com.
164 IN PTR host164.example.com.
165 IN PTR host165.example.com.
...
174 IN PTR host174.example.com.
Dan
--
Dan Busarow 949 443 4172
Dana Point Communications, Inc. dan@dpcsys.com
Dana Point, California 83 09 EF 59 E0 11 89 B4 8D 09 DB FD E1 DD 0C 82
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