It's theoretically interesting to hand off a listen socket, but I'd rather take 1/n machines out of service than leave half of my memory unused on every machine

It's theoretically interesting to hand off a listen socket, but I'd rather take 1/n machines out of service than leave half of my memory unused on every machine. Edit: I also remember hearing some out-there stuff about handing off your IP address and open connection state to another machine so the client doesn't even notice…