Before upgrading to lion os it work for me. But after upgrading to lion os it didnít work for me. The host has 2 network cards, a host bridge, unique. When my MacBook Pro is connected to a Wi-Fi Base Station Apple AirPort Extreme, the guest cannot get an IP via DHCP. When my MBP is connected via Wi-Fi to my Verizon 4GLTE MiFi .The guest operating system is capable to obtain an IP via DHCP in the network adapter bridge.