ansible/roles/iproute2/tasks/main.yml

---
- name: Configure custom tables and protos
  template:
    src: "{{ item }}.j2"
    dest: "/etc/iproute2/{{ item }}.d/custom.conf"
    owner: root
    group: root
    mode: u=rw,g=r,o=r
  loop:
    - rt_tables
    - rt_protos
...