GPL-2+-with-openssl-exception

GNU General Public License, version 2 or any later version.
See GPL-2 for the full text of this license.

In addition, as a special exception, the copyright holders give permission
to link the code of this work with the OpenSSL project's "OpenSSL" library
(or with modified versions of it that use the same license as the "OpenSSL"
library), and distribute linked combinations including the two.  You must
obey the GNU General Public License in all respects for all of the code
used other than "OpenSSL".  If you modify this file, you may extend this
exception to your version of the file, but you are not obligated to do so.
If you do not wish to do so, delete this exception statement from your
version.