servers/roles/debian/templates/interfaces.j2

source /etc/network/interfaces.d/*

# Management VRF and link.
auto mgmt
iface mgmt
    address 127.0.0.1/8
    address ::1/128
    vrf-table auto

{% for iface in hostvars[inventory_hostname].interfaces | selectattr('name', 'match', '^mgmt') | selectattr('ip_addresses') %}
auto {{ iface.name }}
iface {{ iface.name }}
    vrf mgmt
{% for ip in iface.ip_addresses %}
    address {{ ip.address }}
{% set gw = query('netbox.netbox.nb_lookup', 'ip-addresses', api_filter=('tag=gateway parent=' + ip.address))|first %}
{% if gw is defined %}
    gateway {{ gw.value.address | ipaddr('address') }}
{% endif %}
{% endfor %}

{% endfor %}