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From: Paul B Mahol <onemda@gmail.com>
Date: Mon, 24 Jan 2011 16:14:14 +0100
Message-ID: <AANLkTi=S5FHNQwu7ZgavF_-TgckFW1AsiY8ZRUKMWawk@mail.gmail.com>
To: "John R. Levine" <johnl@iecc.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Changing the MAC address on a LAN adapter
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On Sun, Jan 23, 2011 at 3:47 PM, John R. Levine <johnl@iecc.com> wrote:
>>> Is this a known problem? =A0As far as I know, it's supposed to work.
>>
>> How you change MAC address? With "ether" command?
>
> # ifconfig em0 ether 01:17:a4:8f:04:5d

Well, if it does not work it can be driver bug.

In iwn case try to set MAC address of iwn before creating wlan or
you will need to set same MAC on wlanX and iwn.