- /* If we get here `vl.type_instance' and all `vl.values' have been set */
- plugin_dispatch_values (&vl);
+ /* If we get here `vl.type_instance' and all `vl.values' have been set
+ * vl.type_instance can be empty, i.e. a blank port description on a
+ * switch if you're using IF-MIB::ifDescr as Instance.
+ */
+ if (vl.type_instance[0] != '\0')
+ plugin_dispatch_values (&vl);