Added a new alert that is raised if peer does not respond to initial IKE message

src/libcharon/sa/ike_sa.c

@@ -1690,6 +1690,8 @@ METHOD(ike_sa_t, retransmit, status_t,
 			{
 				/* retry IKE_SA_INIT/Main Mode if we have multiple keyingtries */
 				u_int32_t tries = this->peer_cfg->get_keyingtries(this->peer_cfg);
+				charon->bus->alert(charon->bus, ALERT_PEER_INIT_UNREACHABLE,
+								   this->keyingtry);
 				this->keyingtry++;
 				if (tries == 0 || tries > this->keyingtry)
 				{