Introduction to IPv4 and IPv6 protocols

There are two versions of IP protocol. IPv4 and IPv6. IPv4 has a number of available addresses of about 4 billion. Which looks like a lot, but in reality it is not. IPv4 was exhausted a few years ago, a replacement for it is IPv6. IPv6 has a much larger number of available IP addresses. Length of an IPv6 address is 128 bits long. A bit represents a number 0 or 1.

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