Twice in the last few weeks, my ath0 interface was somehow bound to a
channel when running dhclient.  Needless to say, it did not succeed in
finding an AP until I reset it to 'chan -1'.  Should I just add that to
the ifconfig attributes in my dhclient.conf file?  Why is this happening
to start with?

		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb