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Subject: Re: [PATCH] mac80211: do not check duplicate IEs when parsing
 elements.
From: Johannes Berg <johannes@sipsolutions.net>
To: Fred Zhou <fred.zy@gmail.com>
Cc: linux-wireless@vger.kernel.org
Date: Mon, 09 Sep 2013 17:11:24 +0200
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On Mon, 2013-09-09 at 11:41 +0800, Fred Zhou wrote:
>  The 802.11 standard does not prevent the same IE to be
>  included in one frame (e.g. beacon)  multiple times.

Actually, it does say that the IEs must be in a given order, with
exactly the IEs (except for the ones that are allowed multiple times
etc.)

johannes