To become an infrastructure to distribute digital information globally, the Internet requires Internet protocol version 6 (IPv6), a new key technology that can dramatically increase the number of connected devices. Internet protocol version 4 (IPv4) that is currently being used as the base technology for the Internet provides only about 4.3 billion addresses. This number is even smaller than the world population. With IPv4, the Internet can only be a network for computers. The upcoming IPv6 provides virtually an infinite number of addresses. This will enable home appliances, cell phones, cars, game devices, etc. that have not been connected to the Internet so far to communicate with one another via the Internet.
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