Discovering NAT64 IPv6 Prefixes Using the Port Control Protocol (PCP), May 2014
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This document defines a new Port Control Protocol (PCP) option to learn the IPv6 prefix(es) used by a PCP-controlled NAT64 device to build IPv4-converted IPv6 addresses. This option is needed for successful communications when IPv4 addresses are used in referrals.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.