host-identifier with IPv6

[David Farmer]

On 3 Mar 2009 Ted Lemon wrote:

> One of the motivating factors behind the current DUID language was  
> that we do in fact have a serious problem with Mac addresses not being  
> unique to machines.   As the maintainer of the ISC server, and as one  
> of the authors of the Nominum server, we have encountered real  
> customers for whom this need was very real.
> 
> And again, we are aware of your problem - the need to tie a unique  
> identifier to a specific machine.   The DUID does solve that  
> problem.   Depending on your present circumstances, using the DUID may  
> require you to write some additional glue code in your business logic,  
> but you can make it work.   The debate here is not over whether or not  
> you can make it work, but whether you should have to.

So for the sake of discussion, you've convinced me that DUID 
is the way to go for IPv6, I've been there for a while actually I'm 
just trying to figure out how to get there.  What are we suppose 
to be doing for IPv4?  Do DCHPv4 clients exist out in the wild, 
especially Windows and Macintosh that support DUID and 
RFC 4361?  Or do we have to support MAC addresses and 
DUIDs at the same time?


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David Farmer				     Email:	
farmer at umn.edu
Office of Information Technology
Networking & Telecomunication Services
University of Minnesota			     Phone:	612-626-
0815
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Minneapolis, MN 55414-3029		     FAX:	612-626-
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