---
systemd_link__links:
  pub0: 04:00:00:1b:0a:3a

ifupdown2__interfaces:
  pub0:
    addresses:
      - 2a09:6840:215::1:3/64
      - 45.66.111.207/27
    gateways: "{{ ifupdown2__gateways.pub }}"
...