That though had crossed my mind. Unfortunately everything is a retro-fit and other class-C address ranges are in use, often in other buildings, certainly in other vlans.
I should use new "file" for each of the 4 class-C, or can I use one file and dhcp/dns will add "origin" statements as needed?
Thanks much,
Brian
-----Original Message-----
From:
[hidden email] [mailto:
[hidden email]] On Behalf Of /dev/rob0
Sent: Thursday, March 19, 2015 12:48 PM
To:
[hidden email]
Subject: Re: Reverse records in /22 network
On Thu, Mar 19, 2015 at 04:10:16PM +0000, Simon Hobson wrote:
> "Cuttler, Brian (HEALTH)" <
[hidden email]> wrote:
>
> > Machines register in DHCP, and I see A and PTR records appear in DNS.
> >
> > However, I'm using a /22 address space, 10.57.36-39.0 and I only
> > declared a single pointer database
> >
> > Zone "36.57.10.in-addr.arpa." in {
> > Type slave;
> > Masters {xx.xx.xx.xx};
> > File "db.esp122-ptr";
> > };
> >
> > And I now wonder if I don't also need tables for
> > 37.57.10.in-addr.arpa and 38 and 39 as well.
>
> Yes you do. Any mask shorter than 24 bits is OK - you just have
> multiple reverse zones (unless the mask is 8 or 16 bits long). It's
> only when you have a mask longer than 24 bits that things become more
> difficult.
It would be simpler for Brian to just take the whole /16 zone, 57.10.in-addr.arpa, unless other parts of his extended internal network are using those addresses. (And in that case, delegation should have been done.)
> > And then how to properly declare in dhcpd.conf.
>
> Just declare zones for the extra three zones in the DNS - the same as
> the one I assume you already have declared for 36.57.10.in-addr.arpa
> Actually dhcpd will work out the right server to update is all the
> delegation is done correctly - ie a lookup on the SOA for (eg)
> 36.57.10.in-addr.arpa returns the correct master server. You only need
> to define zones to either a) provide a key for secure updates, or b)
> of the DNS isn't setup correctly and you need to tell dhcpd where to
> send updates.
--
http://rob0.nodns4.us/ Offlist GMX mail is seen only if "/dev/rob0" is in the Subject:
_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users_______________________________________________
dhcp-users mailing list
[hidden email]
https://lists.isc.org/mailman/listinfo/dhcp-users
Locked
