参考:http://blog.bodhizazen.net/linux/bridge-wireless-cards/


样例:

qemu-system-x86_64 -enable-kvm -M pc -nodefconfig -nodefaults -rtc base=localtime,clock=host -chardev socket,id=monitor,path=/opt/

a8df3155-6150-4a9e-ab94-846ff948728d82,server,nowait -mon chardev=monitor,mode=readline -smp 1 -m 2048 -name jwang -boot order=dcn -drive media=disk,file=/mnt/test.qcow2,if=none,id=drive-ide0-0-0,format=qcow2,cache=writeback -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0   -net nic -net tap,ifname=tap0,script=no -vga qxl -soundhw ac97 -spice addr=0.0.0.0,port=5904,password=11111111 -usb -usbdevice tablet