IP Version 6 Addressing Architecture

For example the following are legal representations

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Unformatted text preview: it prefix 20010DB80000CD3 (hexadecimal): 2001:0DB8:0000:CD30:0000:0000:0000:0000/60 2001:0DB8::CD30:0:0:0:0/60 2001:0DB8:0:CD30::/60 The following are NOT legal representations of the above prefix: 2001:0DB8:0:CD3/60 trailing may drop leading zeros, but not zeros, within any 16-bit chunk of the address 2001:0DB8::CD30/60 address to left of "/" expands to 2001:0DB8:0000:0000:0000:0000:0000:CD 30 2001:0DB8::CD3/60 address to left of "/" expands to 2001:0DB8:0000:0000:0000:0000:0000:0C D3 Hinden [Page 5] Standards Track RFC 4291 February 2006 IPv6 Addressing Architecture When writing both a node address and a prefix of that node address (e.g., the node's subnet prefix), the two can be combined as follows: the node address 2001:0DB8:0:CD30:123:4567:89AB:CDEF and its subnet number 2001:0DB8:0:CD30::/60 can be abbreviated as 2001:0DB8:0:CD30:123:4567:89AB:CDEF/60 2.4. Address Type Identification The type of an IPv6 address is identified by the high-order bits of the address, as follows: Address type Section Binary prefix IPv6 notation ------------------ ------------- ------------- Unspecified 2.5.2 00...0 (128 bits) ::/128 Loopback 2.5.3 00...1 (128 bits) ::1/128 Multicast 2...
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