cidr_merge.yml

---

- hosts: all
  tasks: 
    
    - name: cidr_merge with merge action
      ansible.builtin.set_fact:
        value:
          - 192.168.0.0/17
          - 192.168.128.0/17
          - 192.168.128.1
    - debug:
        msg: '{{ value|ansible.utils.cidr_merge }}'