RFC4443 "Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification" currently has an IETF standards status of Draft Standard, which is now an obsolete status. This status change requests reclassifying it to Internet Standard. (1) There are at least two independent interoperating implementations with widespread deployment and successful operational experience. RFC4443 has been widely implemented: https://www.ipv6ready.org/db/index.php/public/?o=4 (2) There are no errata against the specification that would cause a new implementation to fail to interoperate with deployed ones. RFC4443 has 4 errata, none of which would cause new interoperability problems. (3) There are no unused features in the specification that greatly increase implementation complexity. There are no unused features. (4) If the technology required to implement the specification requires patented or otherwise controlled technology, then the set of implementations must demonstrate at least two independent, separate and successful uses of the licensing process. N/A RFC3595 "DNS Extensions to Support IP Version 6" currently has an IETF standards status of Draft Standard, which is now an obsolete status. This status change requests reclassifying it to Internet Standard. (1) There are at least two independent interoperating implementations with widespread deployment and successful operational experience. RFC3596 has been widely implemented: https://www.ipv6ready.org/db/index.php/public/?o=4 (2) There are no errata against the specification that would cause a new implementation to fail to interoperate with deployed ones. There are no errata filed against RFC3596 (3) There are no unused features in the specification that greatly increase implementation complexity. There are no unused features. (4) If the technology required to implement the specification requires patented or otherwise controlled technology, then the set of implementations must demonstrate at least two independent, separate and successful uses of the licensing process. N/A