(1) On uip/Mona/uipopt.h
    #define USE_QEMU_TAP_NETWORK 1
    
(2) cd contrib && make

(3) /etc/qemu-ifup
#!/bin/sh
sudo ifconfig $1 192.168.50.2 up

(4) /etc/qemu-ifdown
#!/bin/sh
sudo ifconfig $1 down

(5) sudo qemu -net nic,model=virtio -net tap,if_name=tap0 \
    -cdrom /home/taro/mona/tool/mkimg/mona.iso \
    -fda /home/taro/mona/tool/mkimg/mona.img -boot d

(6) ping 192.168.50.3 (Mona is 192.168.50.3 and Gateway is 192.168.50.2)
    Access 192.168.50.3

