#ifdef __APPLE_API_PRIVATE
extern int esp6_output __P((struct mbuf *, u_char *, struct mbuf *,
struct ipsecrequest *));
-extern int esp6_input __P((struct mbuf **, int *, int));
+extern int esp6_input __P((struct mbuf **, int *));
extern void esp6_ctlinput __P((int, struct sockaddr *, void *));
#endif /* __APPLE_API_PRIVATE */