$ sudo apt-get install netplan.io -y

$ cd /etc/netplan

$ sudo vim 01-network-manager-all.yaml

Add the following content, then save and exit:

network:

    version: 2

    renderer: NetworkManager

    ethernets:

        eth0:  # name of the wired network interface

            mtu: 9000 # MTU value; if set, a system reboot is required for it to take effect

            addresses: [11.22.33.44/24]  # set IP address, must include /24

            dhcp4: no  # disable IPv4 automatic IP assignment

            dhcp6: no  # disable IPv6 automatic IP assignment

            gateway4: 11.22.33.2  # set gateway; the first three segments must match the IP address

            nameservers:

                addresses: [22.33.44.1,22.33.44.2] # primary and secondary DNS servers; multiple values separated by commas, no spaces