[dhcwg] proxy host name removal

	One of the items that needs clarification for the Host Options
Considerations draft is the removal of host name <-> IP address updates.
Specifically, is there a way for a client to ask a DHCP server to remove
an update without giving up its lease?  Two suggestions were made at the
Minneapolis meeting:  either the client should send a zero-length host
name or a new bit in the FQDN option flags field could be allocated to
convey the request.
	There was no concensus at the WG meeting on the need for such a
facility, so I'm polling the mailing list to see whether it's felt we
should pursue this further.  Personally, I believe that if a way of doing
it is to be offered, we should not change the way the Host Name option
is used but instead use the FQDN option to express the request.

			Carl
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