ultrabirb-cluster/ansible/templates/netplan.yaml

# {{ansible_managed}}
network:
  version: 2
  ethernets:
    {{ansible_default_ipv4.interface}}:
      dhcp4: false
      dhcp6: false
      gateway4: {{ ansible_default_ipv4.gateway }}
      addresses:
        - "{{ ansible_default_ipv4.address }}/24"
      routes:
{% for item in magic_routes %}
        - to: {{ item }}
          via: {{ magic_router_ip }}
{% endfor %}