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Disabling ipv6 on Rocky Linux 8 with Ansible

If you wish to disable ipv6 on Rocky Linux 8, there is a wonderful writeup on the script found at https://github.com/juju4/ansible-ipv6/blob/main/tasks/ipv6-disable.yml which you may find useful. If you just need to disable it temporarily without disruption (assuming you have not been using ipv6 at all)

- name: Disable IPv6 with sysctl
  ansible.posix.sysctl:
    name: "{{ item }}"
    value: "1"
    state: "present"
    reload: "yes"
  with_items:
    - net.ipv6.conf.all.disable_ipv6
    - net.ipv6.conf.default.disable_ipv6
    - net.ipv6.conf.lo.disable_ipv6

If you can tolerate a bit of disruption, you may want to take a look at putting it at the network configuration and restarting it

- name: RedHat | disable ipv6 in sysconfig/network
  ansible.builtin.lineinfile:
    dest: /etc/sysconfig/network
    regexp: "^{{ item.regexp }}"
    line: "{{ item.line }}"
    mode: '0644'
    backup: true
    create: true
  with_items:
    - { regexp: 'NETWORKING_IPV6=.*', line: 'NETWORKING_IPV6=NO' }
    - { regexp: 'IPV6INIT=.*', line: 'IPV6INIT=no' }
  notify:
    - Restart network
    - Restart NetworkManager
  when: ansible_os_family == 'RedHat'