Author:  Andras Kis-Szabo <kisza@sch.bme.hu>
Author: Bart De Schuymer
Author: Bart De Schuymer <bdschuym@pandora.be>, but
Author: Hannes Eder <heder@google.com>
Author: Iain Barnes
Author: James Morris <jmorris@intercode.com.au>
Author: Michael S. Tsirkin <mst@redhat.com>
Author: Nick Fedchik <fnm@ukrsat.com>
Author: Paul.Russell@rustcorp.com.au and mneuling@radlogic.com.au
Author: Svenning Soerensen <svenning@post5.tele.dk>
Authors:
Authors: Paul 'Rusty' Russel <rusty@linuxcare.com.au> and
authors: Paul.Russell@rustcorp.com.au and mneuling@radlogic.com.au
Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling
Copyright (C) 2000 Emmanuel Roger  <winfield@freegates.be>
Copyright (c) 2000 Marc Boucher
Copyright (c) 2000-2001 Netfilter Core Team
Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
Copyright (C) 2002,2004 MARA Systems AB <http://www.marasystems.com>
Copyright (C) 2002-2008 BalaBit IT Ltd.
Copyright (c) 2003+ Evgeniy Polyakov <johnpol@2ka.mxt.ru>
Copyright (c) 2003+ Evgeniy Polyakov <zbr@ioremap.net>
Copyright (C) 2003-2010 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Copyright (C) 2003-2011 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Copyright (c) 2003-2013 Patrick McHardy <kaber@trash.net>
Copyright (C) 2004, 2010 Nokia Corporation
Copyright (c) 2005 Evgeniy Polyakov <johnpol@2ka.mxt.ru>
Copyright (c) 2005-2013 Patrick McHardy <kaber@trash.net>
Copyright (C) 2006 Red Hat, Inc., James Morris <jmorris@redhat.com>
Copyright (c) 2006-2013 Patrick McHardy <kaber@trash.net>
Copyright (C) 2007 BalaBit IT Ltd.
Copyright (c) 2007 Sven Schnelle <svens@bitebene.org>
Copyright (c) 2008-2013 Patrick McHardy <kaber@trash.net>
Copyright (C) 2010 Nokia Corporation. All rights reserved.
Copyright (c) 2010-2013 Patrick McHardy <kaber@trash.net>
Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
Copyright (c) 2012-2013 Patrick McHardy <kaber@trash.net>
Copyright (c) 2013 Patrick McHardy <kaber@trash.net>
Copyright (C)2006 USAGI/WIDE Project
Copyright Google, Inc. 2013
Copyright © CC Computer Consultants GmbH, 2007
Copyright © CC Computer Consultants GmbH, 2007 - 2008
Copyright © Jan Engelhardt, 2011
Copyright © Sebastian Claßen <sebastian.classen [at] freenet.ag>, 2007
Modified by Fernando Anton to add support for IPv6.
