extern void default_print_unaligned(const u_char *, u_int);
extern void dvmrp_print(const u_char *, u_int);
extern void egp_print(const u_char *, u_int, const u_char *);
extern void default_print_unaligned(const u_char *, u_int);
extern void dvmrp_print(const u_char *, u_int);
extern void egp_print(const u_char *, u_int, const u_char *);