diff -brau openl2tp-1.8.o/plugins/ipsec.c openl2tp-1.8/plugins/ipsec.c
--- openl2tp-1.8.o/plugins/ipsec.c	2010-01-18 11:00:08.000000000 +0200
+++ openl2tp-1.8/plugins/ipsec.c	2011-06-05 11:00:28.000000000 +0200
@@ -31,7 +31,7 @@
 #include "usl.h"
 #include "l2tp_private.h"
 
-#define IPSEC_SETKEY_CMD	"/sbin/setkey"
+#define IPSEC_SETKEY_CMD	"/usr/sbin/setkey"
 #define IPSEC_SETKEY_FILE	"/tmp/openl2tpd-tmp"
 #define IPSEC_SETKEY_ACTION	IPSEC_SETKEY_CMD " -f " IPSEC_SETKEY_FILE