k3s-ansible/roles/node/templates/etc-systemd-network-20-lan0.network.j2

[Match]
Name={{ interface_name }}

[Network]
Address={{ ansible_default_ipv4.address|default(ansible_all_ipv4_addresses[0]) }}/24
Gateway={{ gateway }}
{% for nameserver in nameservers %}
DNS={{ nameserver }}
{% endfor %}