-gchar* avahi_reverse_lookup_name_ipv4(const AvahiIPv4Address *a);
-gchar* avahi_reverse_lookup_name_ipv6_arpa(const AvahiIPv6Address *a);
-gchar* avahi_reverse_lookup_name_ipv6_int(const AvahiIPv6Address *a);
+/** Return the port number of a sockaddr structure (either IPv4 or IPv6) */
+uint16_t avahi_port_from_sockaddr(const struct sockaddr* sa);
+
+/** Generate the DNS reverse lookup name for an IPv4 address. g_free() the result! */
+char* avahi_reverse_lookup_name_ipv4(const AvahiIPv4Address *a);
+
+/** Generate the modern DNS reverse lookup name for an IPv6 address, ending in ipv6.arpa. g_free() the result! */
+char* avahi_reverse_lookup_name_ipv6_arpa(const AvahiIPv6Address *a);
+
+/** Generate the historic DNS reverse lookup name for an IPv6 address, ending in ipv6.int. g_free() the result! */
+char* avahi_reverse_lookup_name_ipv6_int(const AvahiIPv6Address *a);
+
+/** Check whether the specified IPv6 address is in fact an
+ * encapsulated IPv4 address, returns 1 if yes, 0 otherwise */
+int avahi_address_is_ipv4_in_ipv6(const AvahiAddress *a);