In message <20051001131503.GA1122@antioche.eu.org>, Manuel Bouyer writes:
>On Sat, Oct 01, 2005 at 06:25:21AM -0500, David Young wrote:
>> I think I understand the problem, now, and how to fix it.  ath assumes
>> that the card has power, always, so it can always write keys to the
>> hardware using ath_hal_keyset.  NetBSD breaks that assumption by powering
>> down the cardslot when the NIC is deactivated (ifconfig ath0 down).
>> A quick fix is to stop powering down the cardslot; that happens in
>> ath_cardbus_disable.
>
>It may not be desireable, though. ifconfig down is a way to save power when
>a NIC isn't used, without having to unplug it (which means it would loose
>configuration)
>

Right.  I have a built-in ath interface, and it really drains the 
battery when on.  Besides, I don't think I'm supposed to keep it on on 
airplanes...

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