* @param[in] type Type of data (if talloced)
* @param[in] opaque Data to associate with the request. May be NULL.
* @param[in] free_on_replace Free opaque data if this request_data is replaced.
- * @param[in] free_on_parent Free opaque data if the request is freed.
+ * @param[in] free_on_parent Free opaque data if the request or session is freed.
* Must not be set if the opaque data is also parented by
* the request or state (double free).
* @param[in] persist Transfer request data to an #fr_state_entry_t, and