--- /dev/null
+diff -Nurb linux-2.6.22-510/include/linux/socket.h linux-2.6.22-520/include/linux/socket.h
+--- linux-2.6.22-510/include/linux/socket.h 2007-07-08 19:32:17.000000000 -0400
++++ linux-2.6.22-520/include/linux/socket.h 2008-06-06 17:07:56.000000000 -0400
+@@ -288,6 +288,8 @@
+ #define SOL_TIPC 271
+ #define SOL_RXRPC 272
+
++#define SO_SETXID SO_PEERCRED
++
+ /* IPX options */
+ #define IPX_TYPE 1
+
+
+