I have reviewed draft-ietf-intarea-ipv6-required-01 as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treat these comments just like any other last call comments. I agree with the security considerations of this document, which says "there are no direct security considerations, but existing documented security considerations for implementing IPv6 will apply". I also wholeheartedly agree with the contents of the document (IP is IPv4+IPv6 and not only IPv4), but from my IANAL-view I have a little concern about enforceability of the document and the impact on implementors and vendors. Nevertheless the document is correct from the technical viewpoint and we needed this document decade ago. O. -- OndÅej Surà vedoucà vÃzkumu/Head of R&D department ------------------------------------------- CZ.NIC, z.s.p.o. -- LaboratoÅe CZ.NIC Americka 23, 120 00 Praha 2, Czech Republic mailto:ondrej.sury at nic.cz http://nic.cz/ tel:+420.222745110 fax:+420.222745112 -------------------------------------------