diff -aur freeradius-server-2.1.10.orig/src/lib/udpfromto.c freeradius-server-2.1.10/src/lib/udpfromto.c
--- freeradius-server-2.1.10.orig/src/lib/udpfromto.c	2010-09-28 13:03:56.000000000 +0200
+++ freeradius-server-2.1.10/src/lib/udpfromto.c	2011-02-09 22:41:46.000000000 +0100
@@ -87,7 +87,7 @@
 		 *	This should actually be standard IPv6
 		 */
 		proto = IPPROTO_IPV6;
-		flag = IPV6_PKTINFO;
+		flag = IPV6_2292PKTINFO;
 #endif
 #endif
 	} else {