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Date:      Mon, 24 Jan 2011 11:44:14 -0700
From:      Fred <>
Subject:   Re: Changing the MAC address on a LAN adapter
Message-ID:  <>
In-Reply-To: <>
References:  <20110123023834.19098.qmail@joyce.lan>	<>	<alpine.BSF.2.00.1101230946080.93018@joyce.lan>	<> <>

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Da Rock wrote:
> On 01/25/11 01:14, Paul B Mahol wrote:
>> On Sun, Jan 23, 2011 at 3:47 PM, John R. Levine<>  wrote:
>>>>> Is this a known problem?  As 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.
> Actually I can confirm that. I use lagg for failover, and I remember 
> now you have to set the 'real' interface to the MAC of the other lagg 
> member, not a 'psuedo-device' or it won't work. Same principle applies 
> here.
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Ethernet MAC addresses are assigned by the manufacturer of the 
equipment.  Each unit gets a unique address which generally can't be 
changed and shouldn't be changed.  The manufacturer buys a block of 
addresses from the IEEE.

Best regards,

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