diff --git a/docs/source/meta/license.rst b/docs/source/meta/license.rst
index 5f1087d..ae1718a 100644
--- a/docs/source/meta/license.rst
+++ b/docs/source/meta/license.rst
@@ -4,316 +4,560 @@
 License information
 ===================
 
-Most parts of ndnSIM code are licensed under GNU GPL License 2.0.
+Most parts of ndnSIM code are licensed under GNU GPL License 3.0.
 
 GNU GENERAL PUBLIC LICENSE
---------------------------
+==========================
 
-Version 2, June 1991
+Version 3, 29 June 2007
+=======================
 
-::
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
+    Copyright (C) 2007 Free Software Foundation, Inc. http://fsf.org/ Everyone is permitted to copy
+    and distribute verbatim copies of this license document, but changing it is not allowed.
 
 Preamble
-^^^^^^^^
+========
 
-The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Lesser General Public License instead.)  You can apply it to
-your programs, too.
+The GNU General Public License is a free, copyleft license for software and other kinds of works.
 
-When we speak of free software, we are referring to freedom, not
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+The licenses for most software and other practical works are designed to take away your freedom to
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+====================
 
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+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+All other non-permissive additional terms are considered "further restrictions" within the meaning
+of section 10. If the Program as you received it, or any part of it, contains a notice stating that
+it is governed by this License along with a term that is a further restriction, you may remove that
+term. If a license document contains a further restriction but permits relicensing or conveying
+under this License, you may add to a covered work material governed by the terms of that license
+document, provided that the further restriction does not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you must place, in the relevant
+source files, a statement of the additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the form of a separately written
+license, or stated as exceptions; the above requirements apply either way.
+
+8. Termination.
+---------------
+
+You may not propagate or modify a covered work except as expressly provided under this License. Any
+attempt otherwise to propagate or modify it is void, and will automatically terminate your rights
+under this License (including any patent licenses granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a particular copyright
+holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally
+terminates your license, and (b) permanently, if the copyright holder fails to notify you of the
+violation by some reasonable means prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated permanently if the copyright
+holder notifies you of the violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that copyright holder, and you cure
+the violation prior to 30 days after your receipt of the notice.
+
+Termination of your rights under this section does not terminate the licenses of parties who have
+received copies or rights from you under this License. If your rights have been terminated and not
+permanently reinstated, you do not qualify to receive new licenses for the same material under
+section 10.
+
+9. Acceptance Not Required for Having Copies.
+---------------------------------------------
+
+You are not required to accept this License in order to receive or run a copy of the Program.
+Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer
+transmission to receive a copy likewise does not require acceptance. However, nothing other than
+this License grants you permission to propagate or modify any covered work. These actions infringe
+copyright if you do not accept this License. Therefore, by modifying or propagating a covered work,
+you indicate your acceptance of this License to do so.
+
+10. Automatic Licensing of Downstream Recipients.
+-------------------------------------------------
+
+Each time you convey a covered work, the recipient automatically receives a license from the
+original licensors, to run, modify and propagate that work, subject to this License. You are not
+responsible for enforcing compliance by third parties with this License.
+
+An *"entity transaction"* is a transaction transferring control of an organization, or substantially
+all assets of one, or subdividing an organization, or merging organizations. If propagation of a
+covered work results from an entity transaction, each party to that transaction who receives a copy
+of the work also receives whatever licenses to the work the party's predecessor in interest had or
+could give under the previous paragraph, plus a right to possession of the Corresponding Source of
+the work from the predecessor in interest, if the predecessor has it or can get it with reasonable
+efforts.
+
+You may not impose any further restrictions on the exercise of the rights granted or affirmed under
+this License. For example, you may not impose a license fee, royalty, or other charge for exercise
+of rights granted under this License, and you may not initiate litigation (including a cross-claim
+or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling,
+offering for sale, or importing the Program or any portion of it.
+
+11. Patents.
+------------
+
+A *"contributor"* is a copyright holder who authorizes use under this License of the Program or a
+work on which the Program is based. The work thus licensed is called the contributor's "contributor
+version".
+
+A contributor's *"essential patent claims"* are all patent claims owned or controlled by the
+contributor, whether already acquired or hereafter acquired, that would be infringed by some manner,
+permitted by this License, of making, using, or selling its contributor version, but do not include
+claims that would be infringed only as a consequence of further modification of the contributor
+version. For purposes of this definition, "control" includes the right to grant patent sublicenses
+in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the
+contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run,
+modify and propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express agreement or commitment,
+however denominated, not to enforce a patent (such as an express permission to practice a patent or
+covenant not to sue for patent infringement). To "grant" such a patent license to a party means to
+make such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of
+the work is not available for anyone to copy, free of charge and under the terms of this License,
+through a publicly available network server or other readily accessible means, then you must either
+(1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the
+benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with
+the requirements of this License, to extend the patent license to downstream recipients. "Knowingly
+relying" means you have actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work in a country, would infringe
+one or more identifiable patents in that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate
+by procuring conveyance of, a covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of
+the covered work, then the patent license you grant is automatically extended to all recipients of
+the covered work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the scope of its coverage,
+prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that
+are specifically granted under this License. You may not convey a covered work if you are a party to
+an arrangement with a third party that is in the business of distributing software, under which you
+make payment to the third party based on the extent of your activity of conveying the work, and
+under which the third party grants, to any of the parties who would receive the covered work from
+you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by
+you (or copies made from those copies), or (b) primarily for and in connection with specific
+products or compilations that contain the covered work, unless you entered into that arrangement, or
+that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied license or other
+defenses to infringement that may otherwise be available to you under applicable patent law.
+
+12. No Surrender of Others' Freedom.
+------------------------------------
+
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict
+the conditions of this License, they do not excuse you from the conditions of this License. If you
+cannot convey a covered work so as to satisfy simultaneously your obligations under this License and
+any other pertinent obligations, then as a consequence you may not convey it at all. For example, if
+you agree to terms that obligate you to collect a royalty for further conveying from those to whom
+you convey the Program, the only way you could satisfy both those terms and this License would be to
+refrain entirely from conveying the Program.
+
+13. Use with the GNU Affero General Public License.
+---------------------------------------------------
+
+Notwithstanding any other provision of this License, you have permission to link or combine any
+covered work with a work licensed under version 3 of the GNU Affero General Public License into a
+single combined work, and to convey the resulting work. The terms of this License will continue to
+apply to the part which is the covered work, but the special requirements of the GNU Affero General
+Public License, section 13, concerning interaction through a network will apply to the combination
+as such.
+
+14. Revised Versions of this License.
+-------------------------------------
+
+The Free Software Foundation may publish revised and/or new versions of the GNU General Public
+License from time to time. Such new versions will be similar in spirit to the present version, but
+may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that a certain
+numbered version of the GNU General Public License "or any later version" applies to it, you have
+the option of following the terms and conditions either of that numbered version or of any later
+version published by the Free Software Foundation. If the Program does not specify a version number
+of the GNU General Public License, you may choose any version ever published by the Free Software
 Foundation.
 
-10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
+If the Program specifies that a proxy can decide which future versions of the GNU General Public
+License can be used, that proxy's public statement of acceptance of a version permanently authorizes
+you to choose that version for the Program.
 
-NO WARRANTY
-+++++++++++
+Later license versions may give you additional or different permissions. However, no additional
+obligations are imposed on any author or copyright holder as a result of your choosing to follow a
+later version.
 
-11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
+15. Disclaimer of Warranty.
+---------------------------
 
-12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS"
+WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU
+ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
 
-END OF TERMS AND CONDITIONS
-^^^^^^^^^^^^^^^^^^^^^^^^^^^
+16. Limitation of Liability.
+----------------------------
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR
+ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
+DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
+OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
+INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH
+ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+-----------------------------------------
+
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal
+effect according to their terms, reviewing courts shall apply local law that most closely
+approximates an absolute waiver of all civil liability in connection with the Program, unless a
+warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+# END OF TERMS AND CONDITIONS
+-----------------------------
 
 How to Apply These Terms to Your New Programs
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+=============================================
 
-If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
+If you develop a new program, and you want it to be of the greatest possible use to the public, the
+best way to achieve this is to make it free software which everyone can redistribute and change
+under these terms.
 
-To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
+To do so, attach the following notices to the program. It is safest to attach them to the start of
+each source file to most effectively state the exclusion of warranty; and each file should have at
+least the "copyright" line and a pointer to where the full notice is found.
 
 ::
 
     <one line to give the program's name and a brief idea of what it does.>
     Copyright (C) <year>  <name of author>
 
-    This program is free software; you can redistribute it and/or modify
+    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
+    the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
@@ -321,41 +565,31 @@
     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 USA.
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
+If the program does terminal interaction, make it output a short notice like this when it starts in
+an interactive mode:
 
 ::
 
-    Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type 'show w'.
     This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
+    under certain conditions; type 'show c' for details.
 
-The hypothetical commands ``show w`` and ``show c`` should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than ``show w`` and ``show c``; they could even be
-mouse-clicks or menu items--whatever suits your program.
+The hypothetical commands *'show w'* and *'show c'* should show the appropriate parts of the General
+Public License. Of course, your program's commands might be different; for a GUI interface, you
+would use an "about box".
 
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
+You should also get your employer (if you work as a programmer) or school, if any, to sign a
+"copyright disclaimer" for the program, if necessary. For more information on this, and how to apply
+and follow the GNU GPL, see http://www.gnu.org/licenses/.
 
-::
-
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.
+The GNU General Public License does not permit incorporating your program into proprietary programs.
+If your program is a subroutine library, you may consider it more useful to permit linking
+proprietary applications with the library. If this is what you want to do, use the GNU Lesser
+General Public License instead of this License. But first, please read
+http://www.gnu.org/philosophy/why-not-lgpl.html.