---
- name: "fail if {{ inventory_hostname }} does not have any {{ ip_version }} address on {{ monitor_address_block }}"
  fail:
    msg: "{{ inventory_hostname }} does not have any {{ ip_version }} address on {{ monitor_address_block }}"
  when: hostvars[inventory_hostname]['ansible_all_' + ip_version + '_addresses'] | ipaddr(hostvars[inventory_hostname]['monitor_address_block']) | length == 0