host-identifier with IPv6

[Ted Lemon]

On Mar 1, 2009, at 2:51 PM, Eustace, Glen wrote:
> So unless I have a means to extract out and allocate the address  
> based on the MAC, I am stuffed :-(

My point is that you have the database of macs, and you have an  
identifier that contains the mac.   So there is no reason at all why  
you shouldn't be able to link those two together, while still  
following the protocol.   Since the Mac address of the client is  
stable, despite the fact that there *could* be two DUIDs containing  
the same Mac address, there won't be.   So if you do a database lookup  
based on the extracted Mac, and use it in the address allocation  
decision, but retain the full identifier for disambiguation, you get  
what you want - control based on Mac address - without violating the  
protocol.