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From: Mark Willson <cdr.nil@gmail.com>
Date: Tue, 22 Sep 2009 13:12:59 +0100
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Subject: Re: Microsoft "Dynamic DNS"
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stan wrote:
> I have a situation at work, where I need  a FreeBSD machine to be in the
> corporate DNS. We have been bought out, and the new owner says "no static
> DNS entries". They use some Microsoft technogly where the client machiens
> register thier names with the corprate DNS.
> 
> My Windows laptop for instance, may get different IP addresses using DHCP
> depending on what physical location I connect it in. but it's always the
> same DNS name.
> 
> Can anyone sugest where to look for information as to how this works, and
> how I cna make my FreeBSD machine participate in this?
> 
> 

Stan,

You may also have to set the option "dhcp-client-identifier" in the 
/etc/dhclient.conf file. The value should be the MAC address of the 
interface you are requesting the DHCP address on. I think this is 
something that the Microsoft DHCP server expects.

E.g.

interface "ep0" {
    send host-name "andare.fugue.com";
    send dhcp-client-identifier 1:0:a0:24:ab:fb:9c;
}

-mark