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From: Charles Swiger <cswiger@mac.com>
Date: Tue, 29 Mar 2005 18:02:05 -0500
To: Mac Mason <mac@cs.hmc.edu>
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cc: freebsd-questions@freebsd.org
Subject: Re: Best way to handle network interfaces on a laptop?
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On Mar 29, 2005, at 5:56 PM, Mac Mason wrote:
> Specifically, much of the use of this machine is in unwired sorts of
> places, where I want to use the wi0 interface and not the xl0 
> interface.
>
> If I don't have xl0 in /etc/rc.conf, and then dhclient wi0, it works
> fine.
>
> If I do have xl0 in rc.conf, I can't figure out how to make wi0 route
> things if it isn't plugged into a wire.

Try:
	
	route delete default
	route add default IP_of_wireless_NIC

It may be that deleting the default route first, before you grab a 
lease via "dhclient wi0" would also set up a new default route for 
you...

-- 
-Chuck