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