Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Source: http://www.xelerance.com/software/xl2tpd/ (repacked to remove non-free RFC text included in upstream distribution)

Files: *
Copyright: (c) 2006-2016 Xelerance Corporation
License: GPL

Files: doc/* Makefile xl2tpd-control.c
Copyright: (c) 2006-2016 Xelerance Corporation
License: GPL-2+

Files: md5.c
Copyright: 1993 Colin Plumb
License: public-domain

Files: debian/*
Copyright: (c) 2007-2013 Roberto C. Sanchez <roberto@connexer.com>
                         Jean-Francois Dive
License: GPL

License: GPL
 Please see the CREDITS file for a complete copyright history of all parts of
 the project.
 .
 On Debian systems, the complete text of the GNU General
 Public License can be found in `/usr/share/common-licenses/GPL-2'.

License: GPL-2+
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.
 .
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 .
 On Debian systems, the complete text of the GNU General
 Public License can be found in `/usr/share/common-licenses/GPL-2'.