diff --git a/usrsctplib/netinet/sctp_auth.c b/usrsctplib/netinet/sctp_auth.c
index a7a73157b..852512d74 100755
--- a/usrsctplib/netinet/sctp_auth.c
+++ b/usrsctplib/netinet/sctp_auth.c
@@ -575,7 +575,7 @@ sctp_auth_key_release(struct sctp_tcb *stcb, uint16_t key_id, int so_locked)
 		if ((skey->refcount <= 2) && (skey->deactivated)) {
 			/* notify ULP that key is no longer used */
 			sctp_ulp_notify(SCTP_NOTIFY_AUTH_FREE_KEY, stcb,
-					key_id, 0, so_locked);
+			                0, &key_id, so_locked);
 			SCTPDBG(SCTP_DEBUG_AUTH2,
 				"%s: stcb %p key %u no longer used, %d\n",
 				__func__, (void *)stcb, key_id, skey->refcount);
@@ -1334,8 +1334,8 @@ sctp_deact_sharedkey(struct sctp_tcb *stcb, uint16_t keyid)
 	/* are there other refcount holders on the key? */
 	if (skey->refcount == 1) {
 		/* no other users, send a notification for this key */
-		sctp_ulp_notify(SCTP_NOTIFY_AUTH_FREE_KEY, stcb, keyid, 0,
-				SCTP_SO_LOCKED);
+		sctp_ulp_notify(SCTP_NOTIFY_AUTH_FREE_KEY, stcb, 0, &keyid,
+		                SCTP_SO_LOCKED);
 	}
 
 	/* mark the key as deactivated */
@@ -1679,15 +1679,10 @@ sctp_handle_auth(struct sctp_tcb *stcb, struct sctp_auth_chunk *auth,
 			return (-1);
 		}
 		/* generate a notification if this is a new key id */
-		if (stcb->asoc.authinfo.recv_keyid != shared_key_id)
-			/*
-			 * sctp_ulp_notify(SCTP_NOTIFY_AUTH_NEW_KEY, stcb,
-			 * shared_key_id, (void
-			 * *)stcb->asoc.authinfo.recv_keyid);
-			 */
-			sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY,
-			    shared_key_id, stcb->asoc.authinfo.recv_keyid,
-			    SCTP_SO_NOT_LOCKED);
+		if (stcb->asoc.authinfo.recv_keyid != shared_key_id) {
+			sctp_ulp_notify(SCTP_NOTIFY_AUTH_NEW_KEY, stcb, 0,
+			                &shared_key_id, SCTP_SO_NOT_LOCKED);
+		}
 		/* compute a new recv assoc key and cache it */
 		if (stcb->asoc.authinfo.recv_key != NULL)
 			sctp_free_key(stcb->asoc.authinfo.recv_key);
@@ -1730,7 +1725,7 @@ sctp_handle_auth(struct sctp_tcb *stcb, struct sctp_auth_chunk *auth,
  */
 void
 sctp_notify_authentication(struct sctp_tcb *stcb, uint32_t indication,
-			   uint16_t keyid, uint16_t alt_keyid, int so_locked)
+                           uint16_t keyid, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_authkey_event *auth;
@@ -1739,8 +1734,7 @@ sctp_notify_authentication(struct sctp_tcb *stcb, uint32_t indication,
 	if ((stcb == NULL) ||
 	   (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
 	   (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
-	   (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)
-		) {
+	   (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
 		/* If the socket is gone we are out of here */
 		return;
 	}
@@ -1750,7 +1744,7 @@ sctp_notify_authentication(struct sctp_tcb *stcb, uint32_t indication,
 		return;
 
 	m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_authkey_event),
-					  0, M_NOWAIT, 1, MT_HEADER);
+	                                 0, M_NOWAIT, 1, MT_HEADER);
 	if (m_notify == NULL)
 		/* no space left */
 		return;
@@ -1762,7 +1756,12 @@ sctp_notify_authentication(struct sctp_tcb *stcb, uint32_t indication,
 	auth->auth_flags = 0;
 	auth->auth_length = sizeof(*auth);
 	auth->auth_keynumber = keyid;
-	auth->auth_altkeynumber = alt_keyid;
+	/* XXXMT: The following is BSD specific. */
+	if (indication == SCTP_AUTH_NEW_KEY) {
+		auth->auth_altkeynumber = stcb->asoc.authinfo.recv_keyid;
+	} else {
+		auth->auth_altkeynumber = 0;
+	}
 	auth->auth_indication = indication;
 	auth->auth_assoc_id = sctp_get_associd(stcb);
 
@@ -1782,7 +1781,8 @@ sctp_notify_authentication(struct sctp_tcb *stcb, uint32_t indication,
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
-	    &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
+	                  &stcb->sctp_socket->so_rcv, 1,
+	                  SCTP_READ_LOCK_NOT_HELD, so_locked);
 }
 
 /*-
diff --git a/usrsctplib/netinet/sctp_auth.h b/usrsctplib/netinet/sctp_auth.h
index e7cac3468..00682ae78 100755
--- a/usrsctplib/netinet/sctp_auth.h
+++ b/usrsctplib/netinet/sctp_auth.h
@@ -194,7 +194,7 @@ extern struct mbuf *sctp_add_auth_chunk(struct mbuf *m, struct mbuf **m_end,
 extern int sctp_handle_auth(struct sctp_tcb *stcb, struct sctp_auth_chunk *ch,
     struct mbuf *m, uint32_t offset);
 extern void sctp_notify_authentication(struct sctp_tcb *stcb,
-    uint32_t indication, uint16_t keyid, uint16_t alt_keyid, int so_locked);
+    uint32_t indication, uint16_t keyid, int so_locked);
 extern int sctp_validate_init_auth_params(struct mbuf *m, int offset,
     int limit);
 extern void sctp_initialize_auth_params(struct sctp_inpcb *inp,
diff --git a/usrsctplib/netinet/sctputil.c b/usrsctplib/netinet/sctputil.c
index 2c5c2280d..73e38f080 100755
--- a/usrsctplib/netinet/sctputil.c
+++ b/usrsctplib/netinet/sctputil.c
@@ -4396,19 +4396,16 @@ sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
 		sctp_notify_shutdown_event(stcb);
 		break;
 	case SCTP_NOTIFY_AUTH_NEW_KEY:
-		sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
-		                           (uint16_t)(uintptr_t)data,
-		                           so_locked);
+		sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY,
+		                           *(uint16_t *)data, so_locked);
 		break;
 	case SCTP_NOTIFY_AUTH_FREE_KEY:
-		sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
-		                           (uint16_t)(uintptr_t)data,
-		                           so_locked);
+		sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY,
+		                           *(uint16_t *)data, so_locked);
 		break;
 	case SCTP_NOTIFY_NO_PEER_AUTH:
-		sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
-		                           (uint16_t)(uintptr_t)data,
-		                           so_locked);
+		sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH,
+		                           0, so_locked);
 		break;
 	case SCTP_NOTIFY_SENDER_DRY:
 		sctp_notify_sender_dry_event(stcb, so_locked);