network/roles/firewall/templates/networks.nft.j2

{% for vlan in vlans %}
{% set prefixes = query('netbox.netbox.nb_lookup', 'prefixes', api_filter='vlan_id='~vlan.id, raw_data=true) %}
{% set prefixes4 = prefixes | selectattr('family.value', '==', 4) | map(attribute='prefix') %}
{% set prefixes6 = prefixes | selectattr('family.value', '==', 6) | map(attribute='prefix') %}
set {{ vlan.name }} {
    type ipv4_addr; flags interval
{% if prefixes4 %}
    elements = { {{ prefixes4 | join(', ') }} }
{% endif %}
}
set {{ vlan.name }}/6 {
    type ipv6_addr; flags interval
{% if prefixes6 %}
    elements = { {{ prefixes6 | join(', ') }} }
{% endif %}
}

{% endfor %}