Check the /etc/network/interfaces file. If there is nothing but lo – you are hijacked by the network-manager. Edit /etc/network/interfaces like: auto enp1s0f0 iface enp1s0f0 inet static address 192.168.100.120 netmask 255.255.0.0 gateway 192.168.100.1 dns-nameservers 192.168.100.2 8.8.8.8 dns-search MYDOMAIN.ORG Then do # systemctl stop network-manager # systemctl disable network-manager replace the symlink /etc/resolv.conf with a proper file.