---
- hosts: all
  tasks:
  - name: show IP address
    debug:
      msg: >
        This host uses IP address {{ ansible_facts.default_ipv4.address }}
  - name: show IP address injected variables style
    debug:
      msg: THe IP address is {{ ansible_default_ipv4.address }}
  - name: show IP address preferred style
    debug:
      msg: The IP address is {{ ansible_facts['default_ipv4']['address'] }}
  - name: show IP addresses old way
    debug:
      msg: IP is {{ ansible_default_ipv4['address'] }}