1.1.5 Specifying an IPv6 address

An IPv6 address can be specified as a command argument if it meets the following conditions:

• Only alphanumeric characters and colons (:) are used.

  Note that alphabetic characters are case insensitive.

• The total size of the specified characters is within 3 to 39 bytes.

The following rules apply to the specification of IPv6 addresses:

• If a 16-bit character string (block) delimited by colons (:) begins with 0, the 0 can be omitted.

  Example: The following IPv6 addresses are treated as the same address:

  2001:db80:1234:5678:9abc:def1:2345:0001

  2001:db80:1234:5678:9abc:def1:2345:1

• 16-bit character strings (blocks) whose bits are all 0 can be omitted. Consecutive blocks that contain only 0 can be omitted as a unit.

  Example: The following IPv6 addresses are treated as the same address:

  2001:db80:0000:0000:0000:0000:0000:9abc

  2001:db80::9abc

• In JP1/AJS3, IPv6 addresses cannot be enclosed in square brackets ([ ]).

  Example (allowed): 2001:db80::afff:1

  Example (not allowed): [2001:db80::afff:1]

• In JP1/AJS3, prefixes cannot be specified for IPv6 addresses.

  Example (allowed): 2001:db80::afff:1

  Example (not allowed): 2001:db80::afff:1/32

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