I know that I could test this by plugging in and out the physical networkconnections, but I'm not really in a position to do this on any of the aboveboxes.
If you are on Windows you can use TCPView to kill connections without having to physically disconnect the network:
<http://technet.microsoft.com/en-us/sysinternals/bb897437.aspx> I'm sure there are similar tools for other platforms. Regards, Johan Stuyts