Run the virtual centos on the Ubuntu host

Environment: Ubuntu Command Script :#! /Bin/shsudotunctl-tvb02-umartinsudobrctladdbrbr0sudochmod777/dev/net/tunsudoifconfigeth00.0.0.0promiscsudoifconfigvb01_0.0.0promiscbrctladdbr0sudobrctl

Environment: Ubuntu

Command Script:
#! /Bin/sh

Sudo tunctl-t vb02-u martin
Sudo brctl addbr br0
Sudo chmod 777/dev/net/tun
Sudo ifconfig eth0 0.0.0.0 promisc
Sudo ifconfig vb02 0.0.0.0 promisc

Brctl addbr br0
Sudo brctl addif br0 eth0
Sudo ifconfig br0 up
Sudo dhclient br0
Sudo brctl addif br0 vb02
Sudo ifconfig vb02 up
Sudo chmod 777/dev/net/tun

Sudo VBoxAddIF vb02 martin br0