MacOSx Lion AirDrop peers discovery method

Does the MacOSx 10.7 (Lion) AirDrop peers discovery method using the Bonjour (MDNS) technology, or the WiFi Direct Peer-to-Peer technology (http://www.wi-fi.org/Wi-Fi_Direct.php) ?

I remember Bonjour only works wi开发者_如何学编程thin link-local network. But I have seen articles saying AirDrop can work across different networks or SSID.

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AirDrop does use mDNS.

ifconfig shows that a new network interface called p2p[1-N] is created when AirDrop is opened. Sniffing traffic on this interface shows mDNSv6 packets being sent to ff02::fd port 5353. Containing the strings "_airdrop", your machine name and so on.

But I haven't been able to determine anything about the radio link layer.