Ubuntu18.04
sudo vim /etc/netplan/50-cloud-init.yaml
network:
ethernets:
eth0:
dhcp4: no
addresses: [172.17.49.168/28]
gateway4: 172.17.49.161
nameservers:
addresses: [172.17.49.161, 114.114.114.114]
version: 2
sudo netplan apply