whoops, should be interface_tags

includes/routeros-v7-aggregation-router/interfaces.j2

@@ -32,7 +32,7 @@
         add name="{{ interface.name|safe_string }}" protocol-mode=none vlan-filtering=yes comment="{{ virtual_interface_comment( interface ) }}"
     {%- endif %}
 
-    {%- set subinterface_tags = [] %}
+    {%- set interface_tags = [] %}
     {%- for tag in interface.tags %}
     {%- do interface_tags.append(tag.slug) %}
     {%- endfor %}