RFC 4291:IP Version 6 Addressing Architecture
RFC-Ref

Address Type


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... Address Type Identification ...
... address, as follows: Address type Binary prefix IPv6 notation Section ...
... Global Unicast, such as IPv6 addresses with embedded IPv4 addresses. Additional address types or subtypes can be defined in the future. ...
... addresses. New or updated implementations are not required to support this address type. ...
... IPv6 address that holds an embedded IPv4 address is defined. This address type is used to represent the addresses of IPv4 nodes ...



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