Ubuntu 18.04 uses now Netplan to configure the network interfaces, so the configuration must be done in the file /etc/netplan/50-cloud-init.yaml sudo vi /etc/netplan/50-cloud-init.yaml DHCP address: network: version: 2 renderer: networkd ethernets: enp3s0: dhcp4: true Static address: network: version: 2 renderer: networkd ethernets: enp3s0: addresses: - 10.10.10.2/24 gateway4: 10.10.10.1 nameservers: addresses: [10.10.10.1, 1.1.1.1] You can find … Continue reading How to config static IP address in Ubuntu 18.04 server with Netplan