diff -Nru freeradius-server-2.1.1.orig/src/main/listen.c freeradius-server-2.1.1/src/main/listen.c
--- freeradius-server-2.1.1.orig/src/main/listen.c	2008-09-25 08:41:26.000000000 +0000
+++ freeradius-server-2.1.1/src/main/listen.c	2008-10-12 08:47:46.000000000 +0000
@@ -45,6 +45,9 @@
 #include <fcntl.h>
 #endif
 
+#ifdef WITH_UDPFROMTO
+#include <freeradius-devel/udpfromto.h>
+#endif
 
 /*
  *	We'll use this below.