-extern void zmtp1_print(netdissect_options *, const u_char *, u_int);
-extern void zmtp1_print_datagram(netdissect_options *, const u_char *, const u_int);
-extern void ipx_print(netdissect_options *, const u_char *, u_int);
-extern void mpls_print(netdissect_options *, const u_char *, u_int);
-extern u_int pppoe_print(netdissect_options *, const u_char *, u_int);
-extern u_int pppoe_if_print(netdissect_options *, const struct pcap_pkthdr *, const u_char *);
-extern void sunrpcrequest_print(netdissect_options *, const u_char *, u_int, const u_char *);
-extern u_int pflog_if_print(netdissect_options *, const struct pcap_pkthdr *, const u_char *);
-extern u_int token_print(netdissect_options *, const u_char *, u_int, u_int);
-extern u_int token_if_print(netdissect_options *, const struct pcap_pkthdr *, const u_char *);
-extern void vqp_print(netdissect_options *, register const u_char *, register u_int);
-extern void zephyr_print(netdissect_options *, const u_char *, int);
-extern void fddi_print(netdissect_options *, const u_char *, u_int, u_int);
-extern u_int fddi_if_print(netdissect_options *, const struct pcap_pkthdr *, const u_char *);
-extern void mpcp_print(netdissect_options *, const u_char *, u_int);
-extern void rpki_rtr_print(netdissect_options *, const u_char *, u_int);
-extern u_int sll_if_print(netdissect_options *, const struct pcap_pkthdr *, const u_char *);
-extern void dccp_print(netdissect_options *, const u_char *, const u_char *, u_int);
-extern int llc_print(netdissect_options *, const u_char *, u_int, u_int, const u_char *, const u_char *, u_short *);
-extern int snap_print(netdissect_options *, const u_char *, u_int, u_int, u_int);
-extern void eigrp_print(netdissect_options *, const u_char *, u_int);
-extern void stp_print(netdissect_options *, const u_char *, u_int);
-extern void l2tp_print(netdissect_options *, const u_char *, u_int);
-extern void udp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
-extern void icmp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
-extern void openflow_print(netdissect_options *, const u_char *, const u_int);
-extern void telnet_print(netdissect_options *, const u_char *, u_int);
-extern void slow_print(netdissect_options *, const u_char *, u_int);
-extern void radius_print(netdissect_options *, const u_char *, u_int);
-extern void lmp_print(netdissect_options *, const u_char *, u_int);
-extern u_int fr_print(netdissect_options *, register const u_char *, u_int);
-extern u_int mfr_print(netdissect_options *, register const u_char *, u_int);
-extern u_int fr_if_print(netdissect_options *, const struct pcap_pkthdr *, const u_char *);
-extern u_int mfr_if_print(netdissect_options *, const struct pcap_pkthdr *, const u_char *);
-extern void q933_print(netdissect_options *, const u_char *, u_int);
-extern void igmp_print(netdissect_options *, const u_char *, u_int);
-extern void rip_print(netdissect_options *, const u_char *, u_int);
-extern void lwapp_control_print(netdissect_options *, const u_char *, u_int, int);
-extern void lwapp_data_print(netdissect_options *, const u_char *, u_int);
-extern void pgm_print(netdissect_options *, const u_char *, u_int, const u_char *);
-extern void pptp_print(netdissect_options *, const u_char *);
-extern void ldp_print(netdissect_options *, const u_char *, u_int);
-extern void wb_print(netdissect_options *, const void *, u_int);
-extern int oam_print(netdissect_options *, const u_char *, u_int, u_int);
-extern void atm_print(netdissect_options *, u_int, u_int, u_int, const u_char *, u_int, u_int);
-extern u_int sunatm_if_print(netdissect_options *, const struct pcap_pkthdr *, const u_char *);
-extern u_int atm_if_print(netdissect_options *, const struct pcap_pkthdr *, const u_char *);
-extern void vtp_print(netdissect_options *, const u_char *, u_int);
-extern int mptcp_print(netdissect_options *, const u_char *, u_int, u_char);
-extern void ntp_print(netdissect_options *, const u_char *, u_int);