host name

[Bruce Hudson]

>    for the same computer, the hostname (the hostname of the computer 
> itselft) is the same, be either laptop1a or laptop1b, or whatever 
> something else. when this computer send a request, which statement will apply?

    Do not think of it as the name of the host. Think of it as the name of
the host entry in the configuration.

    A host entry may specify a client-id and not a mac address so it may
not have a mac address at alll. DHCP has more flexibility than most people
make use of, which the configuration language has to support.

    A host entry with a fixed IP address only matches if the request comes
from a subnet that matches that address. If you want your system to get
different configuration parameters depending on which subnet it connects
to, you need multiple host entries for the host.
--
Bruce A. Hudson				| Bruce.Hudson at Dal.CA
UCIS, Networks and Systems		|
Dalhousie University			|
Halifax, Nova Scotia, Canada		| (902) 494-3405