+flxDnsPacket *flx_recv_dns_packet_ipv4(gint fd, struct sockaddr_in*ret_sa, gint *ret_iface, guint8 *ret_ttl);
+flxDnsPacket *flx_recv_dns_packet_ipv6(gint fd, struct sockaddr_in6*ret_sa, gint *ret_iface, guint8 *ret_ttl);
+
+int flx_mdns_mcast_join_ipv4(int index, int fd);
+int flx_mdns_mcast_join_ipv6(int index, int fd);
+
+int flx_mdns_mcast_leave_ipv4(int index, int fd);
+int flx_mdns_mcast_leave_ipv6(int index, int fd);