ansible-role-basic-system-setup/tasks/network-interfaces.yml

---
- name: network-interfaces | Manage additional network interfaces, Ubuntu style
  tags:
    - network_interface
    - networking
  when:
    - ansible_distribution == 'Ubuntu'
    - ubuntu_configure_additional_interfaces
  block:
    - name: network-interfaces | Check if netplan is in use
      ansible.builtin.stat:
        path: /etc/netplan
      register: netplan_in_use
    - name: network-interfaces | Check if additional interfaces have been defined
      ansible.builtin.set_fact:
        net_ints: "{% for i in ansible_interfaces %}{% if i != ansible_lo.device or i != ansible_default_ipv4.interface %}{{ i }}{% if not loop.last %},{% endif %}{% endif %}{% endfor %}"
      when: netplan_in_use.stat.isdir
    - name: network-interfaces | Create a dictionary of additional interfaces
      ansible.builtin.set_fact:
        new_ints: "[{% for i in ansible_interfaces %}{% if i != ansible_lo.device or i != ansible_default_ipv4.interface %}{{ i }}{% if not loop.last %},{% endif %}{% endif %}{% endfor %}]"
      when: net_ints is not defined or net_ints == None or net_ints | length == 0
    - name: network-interfaces | Install the network interface file
      ansible.builtin.template:
        src: 70-ansible.yaml.j2
        dest: /etc/netplan/70-ansible.yaml
        owner: root
        group: root
        mode: "0644"
      when: net_ints is not defined or net_ints == None or net_ints | length == 0
      notify: Netplan Apply