The PacketNgin O/S has beed released under a dual license scheme: GPL and proprietary. 
For the GPL license, the following exception applies. Proprietary license can be 
arranged with us. Just send a inquiry to admin@trtos.com to discuss this option.

PacketNgin O/S, the DPI(Deep Packet Inspection) and network virtualization platform.

Copyright (C) 2016 GurunNetworks, Inc.

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.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, CN.

As a special exception, including header files in a file, or linking with
other files objects to produce an executable application, is merely considered
normal use of the library, and does *not* fall under the heading of "derived
work". Therfore does not by itself cause the resulting executable application
to be covered by the GNU General Public License. This exception does not
however invalidate any other reasons why the executable file might be covered
by the GNU Public License.