License
Following license is applied to our modification to original ns-2.33.Copyright (C) 2008 System Platforms Research Laboratories, NEC Corporation. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2, as published by the Free Software Foundation. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. The copyright of this module includes the following linking-with-specific-other-licenses addition: In addition, as a special exception, the copyright holders of this module give you permission to combine (via static or dynamic linking) this module with free software programs or libraries that are released under the GNU LGPL and with code included in the standard release of ns-2 under the Apache 2.0 license or under otherwise-compatible licenses with advertising requirements (or modified versions of such code, with unchanged license). You may copy and distribute such a system following the terms of the GNU GPL for this module and the licenses of the other code concerned, provided that you include the source code of that other code when and as the GNU GPL requires distribution of source code. Note that people who make modified versions of this module are not obligated to grant this special exception for their modified versions; it is their choice whether to do so. The GNU General Public License gives permission to release a modified version without this exception; this exception also makes it possible to release a modified version which carries forward this exception.
License description of original part of ns-2
The source files in NS contain a number of different copyrights and software licenses from various individuals and institutions. In 2005, the code base was relicensed to a collection of GNU GPL compatible, free software licenses. See http://www.gnu.org/philosophy/license-list.html for a collection of definitions of these terms. Note: See also the COPYRIGHTS file in this directory regarding the copyrights on the ns-2 software. The majority of software licenses use following types of licenses: i) GNU GPL, with specific exception allowing the linking of the GPL covered software with other software licensed with clauses in conflict with the GPL (see below) ii) original Berkeley-style licenses with advertising clauses iii) modified Berkeley-style licenses (w/o advertising clause) Other software licenses (e.g., Apache 2.0) also exist. If you are considering the contribution of code to ns-2, please pick a GNU GPL-compatible software license. If you prefer GNU GPL, please add the specific exception text listed below. If you are considering the use of ns-2, consider that derivative works or redistribution may be governed by the terms of the software licenses used herein, including the GNU GPL and Berkeley-style licenses with advertising clauses. GNU GPL license with specific exception (for use on ns-2 project): ------------------------------------------------------------------- This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2, as published by the Free Software Foundation. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. The copyright of this module includes the following linking-with-specific-other-licenses addition: In addition, as a special exception, the copyright holders of this module give you permission to combine (via static or dynamic linking) this module with free software programs or libraries that are released under the GNU LGPL and with code included in the standard release of ns-2 under the Apache 2.0 license or under otherwise-compatible licenses with advertising requirements (or modified versions of such code, with unchanged license). You may copy and distribute such a system following the terms of the GNU GPL for this module and the licenses of the other code concerned, provided that you include the source code of that other code when and as the GNU GPL requires distribution of source code. Note that people who make modified versions of this module are not obligated to grant this special exception for their modified versions; it is their choice whether to do so. The GNU General Public License gives permission to release a modified version without this exception; this exception also makes it possible to release a modified version which carries forward this exception.