IPv6 Transition Technologies
Published: October 2003
Updated: February 2008
The migration of Internet Protocol version 4 (IPv4) to Internet Protocol version 6 (IPv6) will not happen overnight. There will be a period of transition when both protocols are in use over the same infrastructure. To address this transition period, the designers ofIPv6 have created technologies and address types so that IPv6 nodes can communicate with each other in a mixed environment, even if they are separated by an IPv4-only infrastructure. This white paper describes the IPv6 transition technologies that are supported by the IPv6 protocol for Microsoft® Windows Server® 2008 and Windows Vista™. This white paper is intended for network engineers and supportprofessionals who are already familiar with basic networking concepts, TCP/IP, and IPv6.
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Node Types 1
Using Both IPv4 and IPv6 3
Dual IP Layer Architecture 3
Dual Stack Architecture 4
DNS Infrastructure 6
Address Records 6
Pointer Records 6
Address Selection Rules 6
IPv6 over IPv4 Tunneling 6
Tunneling Configurations 8
Host-to-Router and Router-to-Host 8
Types of Tunnels 10Configured Tunnels 10
Automatic Tunnels 10
ISATAP Components 13
Obtaining an ISATAP Prefix 14
Resolving the ISATAP Name 14
Using the netsh interface isatap set router Command 16
ISATAP Addressing Example 16
ISATAP Routing 17
Configuring an ISATAP Router 18
ISATAP Communication Examples 18
ISATAP Host to ISATAP Host 18