ansible-base/roles/client_iptables/handlers/main.yml

---
- name: save iptables v4 rules
  shell: iptables-save > /etc/iptables/rules.v4
  listen: persist iptables

- name: save iptables v6 rules
  shell: ip6tables-save > /etc/iptables/rules.v6
  listen: persist iptables