Hi,
Have you managed to set a static BSSID to all those chipsets - Atheros, Broadcom, Ralink etc? Because up to now, only Atheros made this trick possible.
thanks to Felix from the OpenWRT project the Atheros driver has that feature (as you know). Broadcom is a much harder cases because the drivers a binary only. We mostly use the famous WRT54G and its derivates for our network. Sven- Ola managed to write patch for that binary driver of the WRT. There also is an open source driver project for the broadcom chips but I'm not sure where it stands. I never experimented with Ralink myself, so I can't answer that. I'm sure Elektra could jump in here. :-)
Regards, Marek