As far as I understand it, with bridged networking you're basically sharing the network device -- your VM has it's own stack down to the MAC address. So as long as your network device is still online (in the sense of being enabled in Windows and having a cable attached), packets for a particular MAC will travel to the right network stack.
This is probably useful from the VirtualBox manual:
> With bridged networking, VirtualBox uses a device driver on your host system that filters data from your physical network adapter. This driver is therefore called a "net filter" driver. This allows VirtualBox to intercept data from the physical network and inject data into it, effectively creating a new network interface in software...
This is probably useful from the VirtualBox manual:
> With bridged networking, VirtualBox uses a device driver on your host system that filters data from your physical network adapter. This driver is therefore called a "net filter" driver. This allows VirtualBox to intercept data from the physical network and inject data into it, effectively creating a new network interface in software...
I'd try it, it wouldn't be hard to reverse.