host-identifier with IPv6

[David W. Hankins]

On Sun, Mar 01, 2009 at 04:44:34PM -0700, Ted Lemon wrote:
> *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.

No, then you've got something else entirely.  The fixed-address host
entry's main feature is that it is completely stateless on the
server's part.  What you are proposing still requires the server to
touch disk to record state prior to answering in order to migrate an
address associated with a MAC address to a DUID.

So although you could use DUID subcontents to flag that a given client
should be given a "reserved dynamic address", that is a different
feature that may not fit all requirements

-- 
David W. Hankins	"If you don't do it right the first time,
Software Engineer		     you'll just have to do it again."
Internet Systems Consortium, Inc.		-- Jack T. Hankins
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