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6rd is a mechanism to facilitate IPv6 rapid deployment across IPv4 infrastructures of Internet service providers (ISPs). It is derived from 6to4, a preexisting mechanism to transfer IPv6 packets over the IPv4 network, with the significant change that it operates entirely within the end-user's ISP's network, thus avoiding the major architectural problems inherent in the original design of 6to4. The name 6rd is a reference to both the rapid deployments of IPv6 it makes possible and, informally, the initials (RD) of its inventor, Rémi Després. A description of 6rd principles and of how they were first used by Free is published in RFC 5569.〔RFC 5569 IPv6 Rapid Deployment on IPv4 Infrastructures (6rd)〕 The detailed 6rd specification prepared for standardization in the IETF is available as RFC 5969.〔RFC 5969 IPv6 Rapid Deployment on IPv4 Infrastructures (6rd) -- Protocol Specification〕 ==History== In , Rémi Després〔(【引用サイトリンク】 title=Les visionnaires )〕 — who was one of the creators of the Transpac data network in France in the 1970s — proposed to Free, the second largest ISP in France, to use the 6rd mechanism he had invented to rapidly deploy IPv6. While Free had until then no short-term plan to offer IPv6 service, Rani Assaf, the CTO of Free, immediately decided to implement the solution. Five weeks later,〔(【引用サイトリンク】 title=IPv6 @ Free )〕 with due marketing approval and operational validation, the press release announcing that IPv6 was available to Free's customers was issued. The first draft describing the 6rd mechanism and Free's deployment was submitted to IETF on .〔 Initial draft〕 After improvements, it was published on as informational RFC 5569.〔 In , a Working Group of the IETF approved that its latest draft on 6rd should become, after some more modifications, a standards-track RFC. In , the standards-track RFC 5969.〔 was published. In Comcast made 6rd software for home gateway devices available via open source for free. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IPv6 rapid deployment」の詳細全文を読む スポンサード リンク
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