Very small parts of the source are taken from the upnpc.c file in
the miniupnpc source.

MiniUPnPc
Copyright (c) 2005-2011, Thomas BERNARD
All rights reserved.

The 'igdgui' software has been written by Thomas Bächler and is
available under the conditions of the GNU General Public License,
version 2. See the file LICENSE for details.


'igdgui' is a small Qt based GUI for managing UPnP IGD devices. It is
based on the miniupnpc library, available at http://miniupnp.free.fr/.
Features:
- View internal and external IP address
- View port forwardings
- Add and delete port forwardings

To build igdgui, you need to install miniupnpc 2.1 or later, and a recent
version of Qt 5 (only tested with Qt 5.11). Run the following commands:
 $ qmake igdgui.pro
 $ make
 $ ./igdgui

Send patches, questions and suggestions to thomas@archlinux.org.