root@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 allow-hotplug enp1s0 auto enp1s0 iface enp1s0 inet static address 192.168.100.80 netmask 255.255.255.0 gateway 192.168.100.1 dns-nameservers 192.168.100.1