ip

    - name: Ensure hostname is in /etc/hosts

      lineinfile:

        dest=/etc/hosts

        regexp="^127.0.1.1.+$"

        line="127.0.1.1 {{ ansible_fqdn }} {{ ansible_hostname }} {{ inventory_hostname }}"

        regexp="^{{ ip | default(ansible_default_ipv4.address) }}.+$"

        line="{{ ip | default(ansible_default_ipv4.address) }} {{ ansible_fqdn }} {{ ansible_hostname }} {{ inventory_hostname }}"

  tags: hostname