В пакете syslinux-3.36-alt1 указано License: BSD; однако в syslinux.doc написано: This program is provided under the terms of the GNU General Public License, version 2 or, at your option, any later version. There is no warranty, neither expressed nor implied, to the function of this program. Please see the included file COPYING for details. (и в COPYING содержится текст GPLv2)
syslinux-3.36-alt2