3.3. Other IPv6 Addresses with Embedded IPv4 Addresses

IPv4-compatible addresses [RFC4291], IPv4-mapped [RFC4291], IPv4-converted [RFC6145], IPv4-translatable [RFC6145], and 6to4 addresses [RFC3056] contain an embedded IPv4 address. For the purposes of this document, these addresses MUST be treated as having global scope.

IPv4-compatible, IPv4-mapped, and IPv4-converted addresses MUST be treated as having "preferred" (in the RFC 4862 sense) configuration status.