Author: Patrick McHardy <kaber@trash.net>
Status: Submitted for kernel inclusion at 2.4.21-pre3 time

The 2.4.20 kernel included the new iptables 'ECN' target, enabling a selective
ECN disable mechanism.   Unfortunately there was a bug in the incremental TCP
checksum update, resulting in broken TCP checksums on little endian machines.

This patch fixes the Bug.

