重新配置网卡

首先ifconfig查看你新的网卡的名字,例如是叫enp0s3,那么:
vim /etc/network/interfaces

Change from:

auto lo
iface lo inet loopback

allow-hotplug eth0
iface eth0 inet static
  address 192.168.56.5
  netmask 255.255.255.0
  gateway 192.168.56.1

Change to:

auto lo
iface lo inet loopback

allow-hotplug enp0s3
iface enp0s3 inet static
  address 192.168.56.5
  netmask 255.255.255.0
  gateway 192.168.56.1