-diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig
---- linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig 2007-05-26 20:17:47.626407992 +0200
-+++ linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig 2007-05-26 20:21:54.587864144 +0200
-@@ -81,6 +81,12 @@
- help
- Say Y to get lots of debugging output.
+--- a/net/ipv4/netfilter/Kconfig
++++ b/net/ipv4/netfilter/Kconfig
+@@ -63,6 +63,12 @@
+
+ To compile it as a module, choose M here. If unsure, say N.