extern int esp_print(register const u_char *, register const u_char *, int *);
extern void isakmp_print(const u_char *, u_int, const u_char *);
extern int ipcomp_print(register const u_char *, register const u_char *, int *);
extern int esp_print(register const u_char *, register const u_char *, int *);
extern void isakmp_print(const u_char *, u_int, const u_char *);
extern int ipcomp_print(register const u_char *, register const u_char *, int *);