-typedef u_int (*if_ndo_printer)(struct netdissect_options *ndo,
- const struct pcap_pkthdr *, const u_char *);
-typedef u_int (*if_printer)(const struct pcap_pkthdr *, const u_char *);
-
-extern if_ndo_printer lookup_ndo_printer(int);
-extern if_printer lookup_printer(int);
-
-