Dual Stack Transition Mechanism

As shown in Figure 6-24, a dual-stack node enables both IPv4 and IPv6 stacks. Applications communicate with both IPv4 and IPv6 stacks; the IP version choice is based on name lookup and application preference. This is the most appropriate method for campus and access networks during the transition period, and it is the preferred technique for transitioning to IPv6. A dual-stack approach supports the maximum number of applications. Operating systems that support the IPv6 stack include FreeBSD, Linux, Sun Solaris, and Windows 2000, XP, and Vista.

Figure 6-24 A Dual-Stack Node Has Both IPv4 and IPv6 Stacks

Figure 6-24 A Dual-Stack Node Has Both IPv4 and IPv6 Stacks

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