virtualbox stuff

ifconfig eth0 0.0.0.0 up && brctl addbr br0 && brctl addif br0 eth0 && ifconfig br0 10.151.35.203 netmask 255.255.255.0 up && tunctl -t tap1 -u chika && brctl addif br0 tap1 && ifconfig tap1 0.0.0.0 up && route add default gw 10.151.35.1
ifconfig eth0 0.0.0.0 up && brctl addbr br0 && brctl addif br0 eth0 && ifconfig br0 10.151.35.203 netmask 255.255.255.0 up && tunctl -t tap0 -u python && brctl addif br0 tap0

Eg: (works)
sudo ifconfig eth0 0.0.0.0 up && sudo brctl addbr br0 && sudo brctl addif br0 eth0 && sudo ifconfig br0 10.151.35.203 netmask 255.255.255.0 up && sudo tunctl -t tap0 -u python && sudo brctl addif br0 tap0 && route add default gw 10.151.35.1