Putting libroute under GPLv3+ is going to be a problem because GNOME
NetworkManager is under GPLv2+.It is ok if libroute is under GPLv3+ and NetworkManager is under GPLv2+ and libnl is under LGPL2.1 only, and they are all linked together. There is no license conflict, because all can be used together under GPLv3 (or GPLv4, in the future).
