ansible : (ubuntu) disable IPv6

disable-ipv6.yml

---
  - name: Remove ipv6 hosts entry
    replace:
      dest: /etc/hosts
      regexp: '^.*::\d\t.+|.*IPv6.*$'
      #backup: yes
    become: yes
# TODO FIND A WAY TO ELIMINATE EMPTY ROWS INSIDE /etc/hosts file
  - name: Find ipv6 kernel parameter
    shell: sysctl --all | egrep '^net.ipv6\..*disable' | awk '{print $1}'
    register: ipv6_sysctl_list
    changed_when: false
    check_mode: no
    become: yes
  - debug: var=ipv6_sysctl_list
  - debug: var=ipv6_sysctl_list.stdout_lines
  - name: Add ipv6 kernel parameter
    sysctl: name={{ item }} value=1
    with_items: "{{ ipv6_sysctl_list.stdout_lines }}"
    become: yes