extern struct pr_usrreqs udp6_usrreqs;
void udp6_ctlinput(int, struct sockaddr *, void *);
-int udp6_input(struct mbuf **, int *);
+int udp6_input(struct mbuf **, int *, int);
int udp6_output(struct inpcb *inp, struct mbuf *m,
struct sockaddr *addr, struct mbuf *control,
struct proc *p);