feat: add interface to firewall logic

        # allow incoming firewall rules

{% for rule in incoming_firewall_rules %}

        # {{ rule.name }}

        iif {{ lan_interface }} ip saddr {{ rule.source }} {{ rule.protocol | default('tcp') }} dport {{ rule.port }} accept

        iif {{ rule.interface | default(lan_interface) }} ip saddr {{ rule.source }} {{ rule.protocol | default('tcp') }} dport {{ rule.port }} accept

{% endfor %}

    }