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 From:  Chris Buechler <cbuechler at gmail dot com>
 To:  "Jason J. Ellingson" <jason at ellingson dot com>
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] Dynamic DNS
 Date:  Wed, 9 Feb 2005 15:57:45 -0500
On Wed, 9 Feb 2005 13:31:33 -0600, Jason J. Ellingson
<jason at ellingson dot com> wrote:
> I have MS DNS servers running and was wondering if anyone had a way for m0n0
> to update a record?
> 
> I see m0n0 has a "RFC 2163 Dynamic DNS updates" option now, but no
> documentation on it.  I wonder if it can be used to update a stand-alone MS
> W2K Server running DNS?
> 

Doesn't look like it.  Windows 2000 DNS server doesn't appear to be
RFC 2163 compliant.  The back end of that appears to be BIND's
nsupdate if that might help any.

http://www.rt.com/man/nsupdate.8.html
http://www.oceanwave.com/technical-resources/unix-admin/nsupdate.html
http://linux.yyz.us/nsupdate/
http://caunter.ca/nsupdate.txt

Found this post:

---
Someone from Microsoft sent me mail the other day saying:

> When nsupdate sends a query for a SOA record of a non-existing name and
the
> Windows 2000 is authoritative for that name, the nsupdate fails to parse
the
> servers response.
>
> Windows 2000 DNS server returns NXDOMAIN with
> SOA record of an authoritative zone (in Authority section) and
> A record of the primary name server specified in the SOA record (in the
> Additional section).
> 
> It looks like the nsupdate can't parse this Additional section.
> Since nsupdate fails to parse the response, it fails the update. Thus,
> nsupdate cannot be used to update a Windows 2000 DNS server.
---

http://ops.ietf.org/lists/namedroppers/namedroppers.199x/msg04301.html

But that was September 1999, so things may have changed since then.  

If you give it a shot, I'd love to hear the results.  It's on my list
of things to check out, but that's a pretty long list.

-Chris