virtualbox host-only 单网卡上网
1.在host主机上共享互联网到virtualbox host-only- network 网卡上(右键共享选 host-only)
2.host-only ip 从192.168.137.1改为 192.168.56.1
3.在guest电脑上 route add default gw 192.168.56.1
4.guest 上vi /etc/resolf.conf
nameserver 210.22.84.3
nameserver 210.22.70,3