sstrncpy(vl.plugin, "serial", sizeof(vl.plugin));
sstrncpy(vl.type, "serial_octets", sizeof(vl.type));
sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
sstrncpy(vl.plugin, "serial", sizeof(vl.plugin));
sstrncpy(vl.type, "serial_octets", sizeof(vl.type));
sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));