#ifdef KERNEL_PRIVATE
struct secasvar;
-extern int ah6_input(struct mbuf **, int *);
+extern int ah6_input(struct mbuf **, int *, int);
extern int ah6_output(struct mbuf *, u_char *, struct mbuf *,
struct secasvar *);
extern int ah6_calccksum(struct mbuf *, caddr_t, size_t,