The Internet World has been using the Internet Protocol version 4 (IPv4) for the last three decades.   Despite its tremendous success, IPv4 is showing signs of strain, especially in its depleted IP address space and its growing security concerns.  IPv6 preserves everything good in today's Internet, and adds much more, such as virtually unlimited IP address space to connect everyone and everything, stateless auto-configuration, seamless mobility, automated network management, end to end security and new optional service levels.

Now more and more global nations have committed to migrating their existing network to support IPv6. For example, the United States of America government has firmly announced last year that they will only support IPv6 stack (Native IPv6) beyond 2025, and many countries like China and India will be following similar approaches. So the future of the new Internet will be IPv6 only, and soon IPv4 will be dropped in the race.