sstrncpy(vl.type, "delay_rate", sizeof(vl.type));
sstrncpy(vl.type_instance, delay_metrics[i].type_instance,
sizeof(vl.type_instance));
sstrncpy(vl.type, "delay_rate", sizeof(vl.type));
sstrncpy(vl.type_instance, delay_metrics[i].type_instance,
sizeof(vl.type_instance));