Apple has posted AirPort 4.0.6 Firmware Update, as noted by MacUpdate. The update is for white base stations only and improves the Admin Utility’s ability to find base stations, is compatible with Internet service providers or other home router products that use private 10.0.0.x or 10.0.1.x addresses in bridge mode, and is compatible with Rendezvous-enabled applications in Mac OS X 10.2. The new Firmware is already included with the Admin Utility found in Mac OS X 10.2.