Lease file questions

[Ryan McCain]

>>> On Fri, Nov 16, 2007 at  2:25 PM, in message
<200711162025.lAGKPX7w002581 at Snoopy.UCIS.Dal.Ca>, Bruce Hudson
<Bruce.Hudson at Dal.Ca> wrote: 
>> >   hardware token-ring 52:41:43:42:d9:01;
>>>   uid "\00042d901-RACcc7e02d940";
>>>   client-hostname "42d901-RACcc7e02d940";
> 
>     You need to look at this device. The hardware type is a field in the
> packet that the server got from the client so that is where the mystery
> lies. What is a RAC? Not only is that in the hostname and the UID, the
> "52:41:43" part of the hardware address spells "RAC". It also says that
> this is not a globally defined ethernet address.


Doing a quick google search and looking in the index of "The DHCP Handbook" didn't turn up any results on how the UID is formed.  Any clue on this?