{% regroup data_tag_mapping by parser_type__tag as grouped_mappings %}
{% for iface in interface_types %}
{% for group in grouped_mappings %}
{% if group.grouper == iface.parser_type__tag %}
{{ iface.tag }} ({{ iface.parser_type__tag }})
Mapping
Data Tag
{% for row in group.list %}
{% if row.mapping != row.tag__tag %}