Internet Protocol is a set of procedures in a telecommunications network that terminals or nodes in that network use to send signals back and forth and that track the address of nodes, route outgoing messages, and recognize incoming messages.

The existing Internet Protocol (Internet Protocol Version 4 (IPv4)) — supports a maximum of 4.3 billion IP addresses, limiting the number of devices that can be given a unique IP address to connect to the Internet.

Internet Protocol version 6 (IPv6) is the next generation of the Internet Protocol (IP). IPv6 will provide the Internet with one billion-squared IP addresses, which should suffice for many years.

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