Notes:
IPv6 is a solution to many of the Internet’s problem, but it’s not a magic panacea that will prevent problems that occur from bad design, misconfiguration or lack of maintenance. It is bound to reduce the administrative burden, increase security and provide more flexibility to the network. It will simply make things that today are difficult a lot easier.
The example above shows a multi party video-conference which today is also possible, but requires a lot of haste with NATs, traffic queuing and others. With IPv6, everyone is globally reachable, mobile users can maintain their mobility while engaged in the conference. Simply put, a more robust and flexible Internet, without a NATs that block peer to peer communication.