+ * encapsulated IPv4 address, returns 1 if yes, 0 otherwise */
+int avahi_address_is_ipv4_in_ipv6(const AvahiAddress *a);
+
+/** Map AVAHI_PROTO_xxx constants to Unix AF_xxx constants */
+int avahi_proto_to_af(AvahiProtocol proto);
+
+/** Map Unix AF_xxx constants to AVAHI_PROTO_xxx constants */
+AvahiProtocol avahi_af_to_proto(int af);
+
+/** Return a textual representation of the specified protocol number. i.e. "IPv4", "IPv6" or "UNSPEC" */
+const char* avahi_proto_to_string(AvahiProtocol proto);
+
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+AVAHI_C_DECL_END
+#endif