Setting message ID on task manager sets DPD sequence numbers in IKEv1

src/libcharon/sa/ikev1/task_manager_v1.c

@@ -1393,6 +1393,14 @@ METHOD(task_manager_t, reset, void,
 	this->initiating.seqnr = 0;
 	this->initiating.retransmitted = 0;
 	this->initiating.type = EXCHANGE_TYPE_UNDEFINED;
+	if (initiate != UINT_MAX)
+	{
+		this->dpd_send = initiate;
+	}
+	if (respond != UINT_MAX)
+	{
+		this->dpd_recv = respond;
+	}
 
 	/* reset queued tasks */
 	enumerator = this->queued_tasks->create_enumerator(this->queued_tasks);

src/libcharon/sa/task_manager.h

@@ -229,9 +229,11 @@ struct task_manager_t {
 	 * resets the message IDs and resets all active tasks using the migrate()
 	 * method.
 	 * Use a value of UINT_MAX to keep the current message ID.
+	 * For IKEv1, the arguments do not set the message ID, but the DPD sequence
+	 * number counters.
 	 *
-	 * @param initiate		message ID to initiate exchanges (send)
-	 * @param respond		message ID to respond to exchanges (expect)
+	 * @param initiate		message ID / DPD seq to initiate exchanges (send)
+	 * @param respond		message ID / DPD seq to respond to exchanges (expect)
 	 */
 	void (*reset) (task_manager_t *this, u_int32_t initiate, u_int32_t respond);