kern/149516: [ath] ath(4) hostap with fake MAC/BSSID results in station dropping packets when associated

[Adrian Chadd]

There was someone who posted on -wireless a while ago about how to
"correctly" program different mac addresses for different VAPs. The
whole setup path is a little un-intuitive and needs some love.

So take a look over the -wireless archives for multi-VAP and separate
mac addresses. :-)

Aha. It's actually having the LSB set in the first octet. Not the MSB.

So 0x80 is fine. 0x90 is fine. 0x09 is not.

http://en.wikipedia.org/wiki/Multicast_address

The hardware treats that address as special, so don't ever configure a
MAC with that multicast bit set. Or things won't work out well.



Adrian