在virtualbox中安装了虚拟机ubuntu，网络配置中只有一个网卡，其他的是灰色，这是为什么啊，怎么配置，ubuntu，才能使得网卡2可以用呢？在/etc/network/interface 添加一个eth1，启动是老师报：Cannot find device "eth1"。在debian中怎么就没事呢
但是另一个虚拟机debian却有两个：
迷茫2017-04-22 09:00:45
After my own experiment just now, I think you can set it up by turning off the running Ubuntu virtual machine first.
ringa_lee2017-04-22 09:00:45
Correct answer upstairs, the configuration of the virtual machine cannot be modified while it is running.
