network:
  version: 2
  ethernets:
    id0:
      match:
        macaddress: "{{ virtualization_mac_address }}"
{% set has_static = system_cfg.ip is defined and system_cfg.ip | string | length %}
{% set dns_value = system_cfg.dns_servers if system_cfg.dns_servers is defined else '' %}
{% set dns_list_raw = dns_value if dns_value is iterable and dns_value is not string else dns_value.split(',') %}
{% set dns_list = dns_list_raw | map('trim') | reject('equalto', '') | list %}
{% set search_value = system_cfg.dns_search if system_cfg.dns_search is defined else '' %}
{% set search_list_raw = search_value if search_value is iterable and search_value is not string else search_value.split(',') %}
{% set search_list = search_list_raw | map('trim') | reject('equalto', '') | list %}
{% if has_static %}
      addresses:
        - "{{ system_cfg.ip }}/{{ system_cfg.prefix }}"
{% if system_cfg.gateway is defined and system_cfg.gateway | string | length %}
      gateway4: "{{ system_cfg.gateway }}"
{% endif %}
{% else %}
      dhcp4: true
{% if (system_cfg.dns_servers is defined and system_cfg.dns_servers | length) or (system_cfg.dns_search is defined and system_cfg.dns_search | length) %}
      dhcp4-overrides:
{% if system_cfg.dns_servers is defined and system_cfg.dns_servers | length %}
        use-dns: false
{% endif %}
{% if system_cfg.dns_search is defined and system_cfg.dns_search | length %}
        use-domains: false
{% endif %}
{% endif %}
{% endif %}
{% if dns_list or search_list %}
      nameservers:
{% if dns_list %}
        addresses:
{% for dns in dns_list %}
          - "{{ dns }}"
{% endfor %}
{% endif %}
{% if search_list %}
        search:
{% for search in search_list %}
          - "{{ search }}"
{% endfor %}
{% endif %}
{% endif %}