From owner-freebsd-net@FreeBSD.ORG  Wed Oct 19 22:46:36 2005
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From: Julian Elischer <julian@elischer.org>
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Subject: probably a simpple answer..
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A frienn asked me "how  do I automatically sence what location my laptop 
is at and
make it use teh right WEP key without manual intervention".

I realised I didn't know..

is there a standard way to do this?
(I know my MAC does it so I guess it's possible).

example  :

laptop moved between home and office. different keys.
automatically connects in and runs dhclient  using the correct WEP key
depending on where it is when booted.