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IPv4
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Currently, IPv6 continues the IPv4 model in that a subnet prefix is
associated with one link ...
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3. An alternative form that is sometimes more convenient when dealing
with a mixed environment of IPv4 and IPv6 nodes is
x:x:x:x:x:x:d.d.d.d, where the 'x's are the hexadecimal values of
...
... IPv6 address prefixes is similar to the
way IPv4 address prefixes are written in Classless Inter-Domain
Routing (CIDR ...
... Global Unicast
addresses that contain embedded IPv4 addresses (for the purposes of
IPv4-IPv6 ...
... addresses that contain embedded IPv4 addresses (for the purposes of
IPv4-IPv6 interoperation) are described in Section 2.5.5.
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... prefixes of arbitrary
bit-length, similar to IPv4 addresses under Classless Inter-Domain
Routing.
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... of Global Unicast, such as IPv6 addresses with embedded IPv4
addresses. Additional address types or subtypes can be defined in
the future.
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... start with binary 000 are
the IPv6 address with embedded IPv4 addresses described in Section
2.5.5. An example of global addresses starting ...
... IPv6 Addresses with Embedded IPv4 Addresses ...
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Two types of IPv6 addresses are defined that carry an IPv4 address in
the low-order 32 bits of the address ...
... the low-order 32 bits of the address. These are the "IPv4-Compatible
IPv6 address" and the "IPv4-mapped ...
... IPv4-Compatible IPv6 Address ...
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The "IPv4-Compatible IPv6 address" was defined to assist in the IPv6
transition. The format of the "IPv4 ...
... IPv4-Compatible IPv6 address" was defined to assist in the IPv6
transition. The format of the "IPv4-Compatible IPv6 address" is as
follows:
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... 32 bits |
+--------------------------------------+--------------------------+
|0000..............................0000|0000| IPv4 address |
+--------------------------------------+----+---------------------+
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... +--------------------------------------+----+---------------------+
Note: The IPv4 address used in the "IPv4-Compatible IPv6 address"
...
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Note: The IPv4 address used in the "IPv4-Compatible IPv6 address"
must be a globally-unique IPv4 ...
... unicast address.
The "IPv4-Compatible IPv6 address" is now deprecated because the
current IPv6 transition ...
... IPv4-Mapped IPv6 Address ...
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A second type of IPv6 address that holds an embedded IPv4 address is
defined. This address type is used to represent the addresses ...
... address type is used to represent the addresses of
IPv4 nodes as IPv6 addresses. The format of the "IPv4-mapped IPv6
address ...
... 32 bits |
+--------------------------------------+--------------------------+
|0000..............................0000|FFFF| IPv4 address |
+--------------------------------------+----+---------------------+
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... address block.
[5] 0000::/96 was previously defined as the "IPv4-Compatible IPv6
address" prefix. This definition has been deprecated by RFC
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