network:
  version: 2
  renderer: networkd
  ethernets:
    eth1:
      dhcp4: no
      addresses: [192.168.123.100/24]
      routes:
        - to: 0.0.0.0/0
          via: 192.168.123.1
      nameservers:
        addresses: [8.8.8.8, 8.8.4.4]