Representation of IPv6 Addresses and Prefixes/
An IP version 6 address is a 128-bit value written as xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx where each x is a hexadecimal digit. There are 8 groups of 4 hexadecimal digits in the above representation, with each digit representing four binary digits (bits). It is not necessary to write the leading zeros in an individual group of four hex digits.
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An example of an IPv6 address is: