diff -uNr mod_auth_radius-1.5.8.ORIG/mod_auth_radius-2.0.c mod_auth_radius-1.5.8/mod_auth_radius-2.0.c
--- mod_auth_radius-1.5.8.ORIG/mod_auth_radius-2.0.c	2013-05-08 14:26:19.103330264 +0100
+++ mod_auth_radius-1.5.8/mod_auth_radius-2.0.c	2013-05-08 14:29:40.331333283 +0100
@@ -287,15 +287,21 @@
 
  */
 
+#include <arpa/inet.h>
 #include <netdb.h>
 #include <openssl/md5.h>
 #include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
 
 #include "httpd.h"
 #include "http_config.h"
 #include "http_core.h"
 #include "http_log.h"
 #include "http_protocol.h"
+#include "http_request.h"
 #include "util_md5.h"
 #include "apr_general.h"
 #include "apr_tables.h"