First do: https://bytesandbones.wordpress.com/2018/02/22/debian-disabling-the-spooky-network-manager/   Then edit /etc/network/interfaces like:   # 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 iface enp1s0f0 inet manual auto br0 iface br0 inet static address […]