>>> Messages generated by process 30326 on 2009-01-02 18:12:39 CET for package net-misc/l7-filter-2.18:

WARN: setup
This may not work with all kernels. If it does not work please enter a bug at bugs.gentoo.org
This only patches the current kernel source code. (/usr/src/linux)
Its up to you to recompile the kernel with the l7 options

You will also need to emerge iptables with the "extensions" or
"l7filter" USE flag (depend which version of iptables you emerge)

ERROR: preinst
This package will overwrite one or more files that may belong to other
packages (see list below). You can use a command such as `portageq
owners / <filename>` to identify the installed package that owns a
file. If portageq reports that only one package owns a file then do
NOT file a bug report. A bug report is only useful if it identifies at
least two or more packages that are known to install the same file(s).
If a collision occurs and you can not explain where the file came from
then you should simply ignore the collision since there is not enough
information to determine if a real problem exists. Please do NOT file
a bug report at http://bugs.gentoo.org unless you report exactly which
two packages install the same file(s). Once again, please do NOT file
a bug report unless you have completely understood the above message.

Detected file collision(s):

        /usr/src/linux-2.6.25-gentoo-r9/net/netfilter/Makefile
        /usr/src/linux-2.6.25-gentoo-r9/net/netfilter/Kconfig
        /usr/src/linux-2.6.25-gentoo-r9/net/netfilter/nf_conntrack_standalone.c
        /usr/src/linux-2.6.25-gentoo-r9/net/netfilter/nf_conntrack_core.c
        /usr/src/linux-2.6.25-gentoo-r9/include/net/netfilter/nf_conntrack.h

Searching all installed packages for file collisions...

Press Ctrl-C to Stop

sys-kernel/gentoo-sources-2.6.25-r9
        /usr/src/linux-2.6.25-gentoo-r9/include/net/netfilter/nf_conntrack.h
        /usr/src/linux-2.6.25-gentoo-r9/net/netfilter/Kconfig
        /usr/src/linux-2.6.25-gentoo-r9/net/netfilter/Makefile
        /usr/src/linux-2.6.25-gentoo-r9/net/netfilter/nf_conntrack_core.c
        /usr/src/linux-2.6.25-gentoo-r9/net/netfilter/nf_conntrack_standalone.c

Package 'net-misc/l7-filter-2.18' NOT merged due to file collisions.
If necessary, refer to your elog messages for the whole content of the
above message.