（1）修改/etc/network/interfaces：
# interfaces(5) file used by ifup(8) and ifdown(8)
# Include files from /etc/network/interfaces.d:
source /etc/network/interfaces.d/*
auto enP4p65s0
iface enP4p65s0 inet static
address 192.168.0.123
netmask 255.255.255.0
gateway 192.168.0.1
nameserver 192.168.0.1
auto eth1
iface eth1 inet static
address 192.168.1.123
netmask 255.255.255.0
gateway 192.168.1.1
nameserver 192.168.1.1
（2）使设置的永久静态IP地址立即生效：
执行systemctl restart networking命令，执行完后，设备断电重启，此静态IP设置仍然生效。