---
- name: Backup sysctl
  ansible.builtin.copy:
    src: /etc/sysctl.conf
    dest: /etc/sysctl.conf.backup
    remote_src: true

- name: Load conntrack module
  ansible.builtin.modprobe:
    name: nf_conntrack
    state: present

- name: Tuning core
  ansible.builtin.sysctl:
    name: "{{ item.key }}"
    value: "{{ item.value }}"
  loop: "{{ sysctl_params | dict2items }}"
  notify: Reload sysctl
...