Author: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Status: Submitted for kernel inclusion at 2.4.21-pre3 time

As 2.4.20 came out with newnat included, there were several reports on
excessive logging of reused FTP expectations.

A tcpdump (thanks to jpiszcz) proved that such log entries can easily be
triggered when a client tries to download/list non-existent entries in
active mode and then wants to download other files as well

The patch fixes the problem by separating the two possible cases:
when the conntrack helper is registered with the reuse flag enabled, then
the logging is converted to debugging (not enabled by default), otherwise
the logging is kept to notify the admin on the violation of the given protocol.

