环境
系统版本：Ubuntu 16.04.5 LTS
配置
ubuntu系统网卡文件是interfaces，修改网卡配置文件vim /etc/network/interfaces添加2个IP地址：
auto eth0:1
iface eth0:1 inet static
address 192.168.7.20
netmask 255.255.255.0
auto eth0:2
iface eth0:2 inet static
address 10.10.15.1
netmask 255.255.255.0多个IP可以在后面追加eth0:3下面是添加上2个IP的interfaces文件所有内容
source /etc/network/interfaces.d/*
# Network is managed by Network manager
auto eth0
#iface eth0 inet dhcp
iface eth0 inet static
address 192.168.6.22
netmask 255.255.255.0
auto eth0:1
iface eth0:1 inet static
address 192.168.7.20
netmask 255.255.255.0
auto eth0:2
iface eth0:2 inet static
address 10.10.15.1
netmask 255.255.255.0
auto lo
iface lo inet loopback 配置完成后，重启reboot使其生效，查看ip配置
