-extern void dvmrp_print(const u_char *, u_int);
-extern void egp_print(const u_char *, u_int);
-extern u_int enc_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int pflog_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int arcnet_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int arcnet_linux_if_print(const struct pcap_pkthdr *, const u_char *);
-extern void ether_print(const u_char *, u_int, u_int);
-extern u_int ether_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int token_print(const u_char *, u_int, u_int);
-extern u_int token_if_print(const struct pcap_pkthdr *, const u_char *);
-extern void fddi_print(const u_char *, u_int, u_int);
-extern u_int fddi_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int fr_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int fr_print(register const u_char *, u_int);
-extern u_int ieee802_11_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int ieee802_11_radio_if_print(const struct pcap_pkthdr *,
- const u_char *);
-extern u_int ap1394_if_print(const struct pcap_pkthdr *, const u_char *);
-extern void gre_print(const u_char *, u_int);
-extern void icmp_print(const u_char *, u_int, const u_char *, int);
-extern void igmp_print(const u_char *, u_int);
-extern void igrp_print(const u_char *, u_int, const u_char *);
-extern void ipN_print(const u_char *, u_int);
-extern u_int ipfc_if_print(const struct pcap_pkthdr *, const u_char *);
-extern void ipx_print(const u_char *, u_int);
-extern void isoclns_print(const u_char *, u_int, u_int);
-extern void krb_print(const u_char *);
-extern u_int llap_print(const u_char *, u_int);
-extern u_int ltalk_if_print(const struct pcap_pkthdr *, const u_char *);
-extern void msdp_print(const unsigned char *, u_int);
-extern void nfsreply_print(const u_char *, u_int, const u_char *);
-extern void nfsreq_print(const u_char *, u_int, const u_char *);
-extern void ns_print(const u_char *, u_int, int);
-extern void ntp_print(const u_char *, u_int);
-extern u_int null_if_print(const struct pcap_pkthdr *, const u_char *);