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Subject: Re: [PATCHv3] mac80211: dynamic wep
From: Volker Braun <volker.braun@physik.hu-berlin.de>
To: Jouni Malinen <j@w1.fi>
Cc: Johannes Berg <johannes@sipsolutions.net>,
	Linux Wireless <linux-wireless@vger.kernel.org>,
	Michael Wu <flamingice@sourmilk.net>
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Date: Tue, 21 Aug 2007 00:35:06 -0400
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The APs rotate key index 1 and 2 for broadcast keys as you said, but
I've never seen it use anything but key index 3 for unicast keys. Key
index 0 is apparently never used. 

I understand that rekeying broadcast keys while all STA's exchange
broadcast traffic has a synchronization problem. But for unicast traffic
there is no way to lose packets during rekeying since at any given time
only one packet can be in the air. Am I missing something?