network:
    version: 2
    ethernets:
        eth0:
            addresses:
            - 5.6.77.8/32
            gateway4: 123.4.5.254
            routes:
                      - to: 123.4.5.254
                        via: 0.0.0.0
                        scope: link
            match:
                macaddress: 00:00:00:00:00:00
            nameservers:
                addresses:
                - 8.8.8.8
                search: []
            set-name: eth0