vat_json_object_add_uint (node, "src-if-index", sw_if_index_from);
vat_json_object_add_string_copy (node, "src-if-name", sw_if_from_name);
vat_json_object_add_uint (node, "dst-if-index", sw_if_index_to);
vat_json_object_add_uint (node, "src-if-index", sw_if_index_from);
vat_json_object_add_string_copy (node, "src-if-name", sw_if_from_name);
vat_json_object_add_uint (node, "dst-if-index", sw_if_index_to);