<P> IPv6 addresses have 128 bits . The design of the IPv6 address space implements a very different design philosophy than in IPv4, in which subnetting was used to improve the efficiency of utilization of the small address space . In IPv6, the address space is deemed large enough for the foreseeable future, and a local area subnet always uses 64 bits for the host portion of the address, designated as the interface identifier, while the most - significant 64 bits are used as the routing prefix . </P> <P> The identifier is only unique within the subnet to which a host is connected . IPv6 has a mechanism for automatic address detection, so that address autoconfiguration always produces unique assignments . </P> <P> The 128 bits of an IPv6 address are represented in 8 groups of 16 bits each . Each group is written as four hexadecimal digits (sometimes called hextets) and the groups are separated by colons (:). An example of this representation is 2001: 0db8: 0000: 0000: 0000: ff00: 0042: 8329 . </P> <P> For convenience, an IPv6 address may be abbreviated to shorter notations by application of the following rules . </P>

What is an equivalent representation of the full ipv6 address
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