用系统后台面板重装的系统，2个IP都能正常使用，但是自己DD系统后，只有一个IP，我们需要修改/etc/network/interfaces的内容，让系统能够正常识别到2个IP
后台面板重装 interfaces 参数
# Generated by SolusVM auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 194.33.39.1 gateway 194.33.39.1 netmask 255.255.255.0 dns-nameservers 8.8.8.8 8.8.4.4 auto eth0:0 iface eth0:0 inet static address 194.33.39.2 gateway 194.33.39.1 netmask 255.255.255.0 dns-nameservers 8.8.8.8 8.8.4.4
自己DD系统 interfaces 参数
# 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 interface
allow-hotplug ens3
iface ens3 inet static
address 194.33.39.1/24
gateway 194.33.39.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 8.8.8.8
dns-search skulljargon.com
我们只需要把allow-hotplug改成auto，并新增加一个网卡:0就可以。
# 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 interface
auto ens3
iface ens3 inet static
address 194.33.39.1/24
gateway 194.33.39.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 8.8.8.8
dns-search skulljargon.com
auto ens3:0
iface ens3:0 inet static
address 194.33.39.2/24
gateway 194.33.39.1
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 8.8.8.8
dns-search skulljargon.com
