network:
  ethernets:
    eth0:
            addresses: [192.168.100.5/24]
            gateway4: 192.168.100.1
            nameservers:
                    addresses: [192.168.100.1]
    eth1:
            addresses: [<public ip>/29]
            gateway4: <public ip's gateway>
            nameservers:
                    addresses: [<public ip's gateway]
  version: 2
  renderer: networkd