$ sudo qemu-system-arm -M vexpress-a9 -smp 1 -m 256                  \
  -kernel _build/qemu_arm/dev/nerves/system/images/zImage            \
  -dtb _build/qemu_arm/dev/nerves/system/images/vexpress-v2p-ca9.dtb \
  -drive file=_images/qemu_arm/conreality.img,if=sd,format=raw       \
  -append "console=ttyAMA0,115200 root=/dev/mmcblk0p2" -serial stdio \
  -net nic,model=lan9118                                             \
  -net tap,ifname=tap0,script=qemu-ifup.sh,downscript=qemu-ifdown.sh