On Thu, Dec 23, 2004 at 09:39:37PM -0500, Steven M. Bellovin wrote:
> I'm running a very fresh -current on a Thinkpad T42 with an 802.11a/b/g 
> card.  I also run ifwatchd, and I see that carrier on the ath interface 
> is dropped/restored about once per minute.  Why is that?  At the 
> moment, it's the active interface I'm using to get out to the world.

If the interface idle, then maybe the AP is disconnecting you.  Will you
see what's happening "on the air" at that time with 'tcpdump -ne -y
ieee802_11 -i ath0' ?

There is a radio calibration that Atheros does periodically.  Maybe it
is that.

Dave

-- 
David Young             OJC Technologies
dyoung@ojctech.com      Urbana, IL * (217) 278-3933