--- mod_throttle-3.1.2/mod_throttle.c	Sun Dec  3 11:15:10 2000
+++ mod_throttle.c	Fri Aug 30 11:38:50 2002
@@ -2788,6 +2788,12 @@
 	if (ap_table_get(r->headers_in, x_is_subrequest) == true)
 		return OK;
 
+#ifdef INET6
+	/* decline if client has an IPv6 address */
+	if (r->connection->remote_addr.ss_family != AF_INET)
+		return DECLINED;
+#endif
+
 	/* Avoid throttling status requests, but subject them to
 	 * other access controls.
 	 */
@@ -2811,7 +2817,11 @@
 	 * which we will apply the global policy for client connections.
 	 */
 	client_ip_config.track = (t_throttle *) get_client_ip(
+#ifdef INET6
+		client_ip_pool, ((struct sockaddr_in *)&r->connection->remote_addr)->sin_addr
+#else
 		client_ip_pool, r->connection->remote_addr.sin_addr
+#endif
 	);
 
 	/* Is it time for the period adjustment? */
@@ -3185,7 +3195,17 @@
 	(void) critical_acquire(critical);
 
 #ifdef THROTTLE_CLIENT_IP
-	client_ip = get_client_ip(client_ip_pool, r->connection->remote_addr.sin_addr);
+	#ifdef INET6
+	/* decline if client has an IPv6 address */
+	if (r->connection->remote_addr.ss_family != AF_INET)
+		return DECLINED;
+
+	client_ip = get_client_ip(client_ip_pool,
+			((struct sockaddr_in *)&r->connection->remote_addr)->sin_addr);
+	#else
+	client_ip = get_client_ip(client_ip_pool,
+			r->connection->remote_addr)->sin_addr;
+	#endif
 #endif
 #ifdef THROTTLE_REMOTE_USER
 	remote_user = get_remote_user(remote_user_pool, r->connection->user);