- name: Reboot
  reboot:
  # Don't reboot yourself accidentally:
  when: 'ansible_env["SSH_CLIENT"].split()[0] not in ansible_all_ipv4_addresses'
  listen: reboot

- name: Wait for connectivity
  # One of the nodes is the VPN server connecting all the other nodes, wait
  # until all of them are back up:
  wait_for_connection:
  listen: reboot