diff --git a/sys/net/sixlowpan/sixlownd.h b/sys/net/sixlowpan/sixlownd.h
new file mode 100644
index 0000000000..571a1a3dc2
--- /dev/null
+++ b/sys/net/sixlowpan/sixlownd.h
@@ -0,0 +1,4 @@
+#include <stdint.h>
+
+#define RS_LEN                  4
+#define LLAO_OPT_LEN            8