general cleanup + add -C and -c
diff --git a/extensions/ebtable_nat.c b/extensions/ebtable_nat.c
index d64e21d..b21c9dd 100644
--- a/extensions/ebtable_nat.c
+++ b/extensions/ebtable_nat.c
@@ -1,3 +1,11 @@
+/* ebtable_nat
+ *
+ * Authors:
+ * Bart De Schuymer <bdschuym@pandora.be>
+ *
+ * April, 2002
+ */
+
 #include <stdio.h>
 #include "../include/ebtables_u.h"