-extern u_int pppoe_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int prism_if_print(const struct pcap_pkthdr *, const u_char *);
-extern void q933_print(const u_char *, u_int);
-extern int vjc_print(register const char *, u_short);
-extern void vqp_print(register const u_char *, register u_int);
-extern u_int raw_if_print(const struct pcap_pkthdr *, const u_char *);
-extern void rip_print(const u_char *, u_int);
-extern u_int sl_if_print(const struct pcap_pkthdr *, const u_char *);
-extern void lane_print(const u_char *, u_int, u_int);
-extern u_int lane_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int cip_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int sl_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int chdlc_if_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int chdlc_print(register const u_char *, u_int);
-extern u_int juniper_atm1_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_atm2_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_mfr_print(const struct pcap_pkthdr *, register const u_char *);
-extern u_int juniper_mlfr_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_mlppp_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_pppoe_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_pppoe_atm_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_ggsn_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_es_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_monitor_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_services_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_ether_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_ppp_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_frelay_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int juniper_chdlc_print(const struct pcap_pkthdr *, const u_char *);
-extern u_int sll_if_print(const struct pcap_pkthdr *, const u_char *);
-extern void snmp_print(const u_char *, u_int);
-extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
-extern u_int symantec_if_print(const struct pcap_pkthdr *, const u_char *);