网络一设置使用NAT（用来上网）
网络二使用HostOnly 用来虚拟机和宿主主机互通
yangyan@debian:~$ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interfac
auto enp0s3
iface enp0s3 inet dhcp
auto enp0s8
iface enp0s8 inet static
address 192.168.56.11
netmask 255.255.255.0
gateway 192.168.56.1