strncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
strncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));