qemu-system-x86_64 -kernel Codes/linux-3.4.7/arch/x86_64/boot/bzImage -hda Ubuntu-PrecisePangolin-AMD64-root_fs -append root=/dev/sda \
          -net nic,macaddr=52:54:00:12:34:56 \
          -net tap,ifname=tap0,script=/bin/true,downscript=/bin/true \
          -m 1024 \
          -smp 1 \
          -localtime