IPv4 Exhaustion, IPv6 Transition, - Saudi Arabia IPv6 Task Force

een investing significant energy in developing and deploying viable and effective transitionsolutions. 85 But the variety of different transition solutions also raises the concern of how welldifferent solutions will work with each other, whether there will be conflicts, and what might getbroken in the process.Generally, the methods of solving this problem are known as Dual Stack andTunneling. 86 With the Dual Stack solution, a host runs both an IPv4 and an IPv6 stack side byside. Traffic which reaches the host using either network protocol can interact with the host. Inthe GAO diagram below, the routers are dual stack and handle traffic from either IPv4 or IPv6clients on their respective networks.Figure 6: Example of a Dual Stack Network 8785 See, e.g., North American Network Operators Group (NANOG) 50 Meeting Agenda, Oct. 3 – 6, 2010, Atlanta,GA (several panels discussing IPv6 transition).86 See IPv6 Transition Guidance, Federal CIO Council Architecture and Infrastructure Committee, CIO Council, p.8, Sec. 2.2.1 (Feb. 2006); IPv6 Deployment Strategies, CISCO (Dec. 23, 2002); John Curran, An Internet TransitionPlan version 3, IETF Informational (May 2008). During the NCP to IPv4 transition, hosts were able to operate bothNCP and IPv4 and some hosts acted as translators. See J. Postel, NCP/TCP Transition Plan, RFC 801 (Nov. 1981);Janet Abbate, Inventing the Internet, p. 141 (MIT Press 2000); Email from Jack Haverty to IH mailing list, NCP toTCP/IP Transition (April 27, 2009) (recounting transition).87 GAO, Internet Protocol version 6, Federal Agencies Need to Plan for Transition and Manage Security Risks, p. 21(May 2005).18FCC Staff Working Paper