format_function_t format_vnet_hw_interface;
format_function_t format_vnet_sw_interface;
format_function_t format_vnet_sw_interface_name;
+format_function_t format_vnet_sw_interface_name_override;
format_function_t format_vnet_sw_if_index_name;
format_function_t format_vnet_sw_interface_flags;