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 enp0s3 # #设置开机自动连接网络
allow-hotplug enp0s3
iface enp0s3 inet static #static表示使用固定IP地址上网，dhcp表示使用动态ip
address 192.168.88.3 #设置静态ip地址
netmask 255.255.255.0 #子网掩码
gateway 192.168.88.1 #网关
auto lo
iface lo inet loopback
#重启网络不成功
service networking restart
my eg debian10
#要先确定你的网络接口为 enp0s3 也可能是其它
# The primary network interface 2020
auto enp0s3
allow-hotplug enp0s3
iface enp0s3 inet static
address 192.168.88.68
netmask 255.255.255.0
gateway 192.168.88.1
auto lo
iface lo inet loopback
#on lx
auto lo
iface lo inet loopback
# The primary network interface
auto ens192
allow-hotplug ens192
iface ens192 inet static
address 192.168.10.193
#address 192.168.11.193
netmask 255.255.254.0
gateway 192.168.10.1
# This is an autoconfigured IPv6 interface
iface ens192 inet6 auto
参考
Debian中如何设置静态IP地址
debian9.x配置网络
