ansible/roles/network/templates/netplan.yaml.j2

---
network:
  version: {{ network_netplan_version | default(2) }}
  renderer: {{ network_netplan_renderer | default('networkd') }}
{% if network_interfaces is defined and network_interfaces | length %}
  ethernets:
{%   for iface in network_interfaces %}
    {{ iface['name'] }}:
{%     if iface['inet4']['dhcp'] is defined %}
      dhcp4: {{ iface['inet4']['dhcp'] | ternary('true', 'false') }}
{%     endif %}
{%     if iface['inet4']['dhcp'] is defined %}
      dhcp6: {{ iface['inet6']['dhcp'] | ternary('true', 'false') }}
{%     endif %}
{%     if iface['inet6']['accept_ra'] is defined %}
      accept-ra: {{ iface['inet6']['accept_ra'] | ternary('true', 'false') }}
{%     endif %}
{%     if iface['inet4']['address'] is defined or iface['inet6']['address'] is defined %}
      addresses:
{%       for ip in iface['inet4']['address'] | default([]) %}
        - {{ ip }}
{%       endfor %}
{%       for ip in iface['inet6']['address'] | default([]) %}
        - {{ ip }}
{%       endfor %}
{%     endif %}
{%     if iface['inet4']['gateway'] is defined %}
      gateway4: {{ iface['inet4']['gateway'] }}
{%     endif %}
{%     if iface['inet6']['gateway'] is defined %}
      gateway6: {{ iface['inet6']['gateway'] }}
{%     endif %}
{%     if network_dns_nameservers is defined %}
      nameservers:
        addresses:
{%       for ip in network_dns_nameservers %}
          - {{ ip }}
{%       endfor %}
{%     endif %}
{%   endfor %}
{% endif %}