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Date:      Mon, 11 Jun 2012 09:28:49 -0700
From:      Adrian Chadd <adrian@freebsd.org>
To:        Monthadar Al Jaberi <monthadar@gmail.com>
Cc:        freebsd-wireless@freebsd.org
Subject:   Re: AP <-> STA: tcpdump shows duplicate ARP request from STA, but STA only sends one.
Message-ID:  <CAJ-VmonwquHPh%2BHcDDU0u1SNRf_eG6sRs_kVg-geaN=wGwUEsw@mail.gmail.com>
In-Reply-To: <CA%2BsBSo%2BKF-OABC8v=3hPfn433Lhi2wkcP3Q%2B5Hu9H%2BHnpC2kGw@mail.gmail.com>
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Hi!

The "null frame" is from hostap. It sends it out whenever a new
station (re) joins. It's a broadcast frame that's harmless, designed
to "seed" all the switches with the true location of the MAC address.

As for dup packets, I'm not sure. Hm!



Adrian
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