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From: Adrian Chadd <adrian@freebsd.org>
To: Peter Jeremy <peter@rulingia.com>
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Cc: kaltheat@googlemail.com, net@freebsd.org
Subject: Re: lagg failover issue
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On 2 September 2012 14:29, Peter Jeremy <peter@rulingia.com> wrote:
> Adrian,
>
> On 2012-Aug-31 04:29:53 -0700, Adrian Chadd <adrian@freebsd.org> wrote:
>>You can't override set the outbound MAC address of a wireless station.
>>It associates with the MAC address of the card/vap/device. The AP
>>_will_ store that MAC address in its node table.
>
> Are you saying I can't portably do the following:
>     # ifconfig ath0 ether 00:11:22:33:44:55
>     # ifconfig create wlan0 wlandev ath0 ssid my_net up

There's some weird, undocumented crap surrounding changing MAC
addresses but in theory, once the right incantation works, that should
work fine.

However, lagg would then have to ensure a broadcast frame will go out
so the forwarding tables get updated. Or else various L2 devices won't
know the location of your device has changed.

I'ms aying if you placed an ath STA  vap into a bridge group or some
other device that sent frames from a source MAC that wasn't the STA
MAC, it won't work. That only works with 4-address WDS mode.


Adrian