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Application Aspects of IPv6 Transition draft-shin-v6ops-application-transition-00.txt

Application Aspects of IPv6 Transition draft-shin-v6ops-application-transition-00.txt. Myung-Ki Shin, Yong-Guen Hong, ETRI Jun-ichiro Itojun Hagino, IIJ Pekka Savola, CSC/FUNET IETF-55 v6ops Meeting @Atlanta. History of this draft. IETF-52, SLC First draft was presented in Ngtrans.

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Application Aspects of IPv6 Transition draft-shin-v6ops-application-transition-00.txt

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  1. Application Aspects of IPv6 Transitiondraft-shin-v6ops-application-transition-00.txt Myung-Ki Shin, Yong-Guen Hong, ETRI Jun-ichiro Itojun Hagino, IIJ Pekka Savola, CSC/FUNET IETF-55 v6ops Meeting @Atlanta

  2. History of this draft • IETF-52, SLC • First draft was presented in Ngtrans. • IETF-53, Minneapolis • Revised draft was presented. • IETF-55, Atlanta • New draft (00) is published in v6ops • Issues and guidelines are more clearly defined. • New co-authors are added.

  3. Why this draft ? • As IPv6 is deployed, the application developers and the administrators will face several problems. • This draft clarifies the problems occurring in transition period between IPv4 applications and IPv6 applications. • It also proposes guidelines that help application developers understand how to develop IP version-independent applications during the transition period.

  4. Appv4 Appv4 Appv6 Appv4/6 TCP(UDP) TCP(UDP) TCP(UDP) IPv4 IPv6 IPv4 IPv6 IPv4 IPv6 Case 2 IPv6 Application transition cases Case 1 Appv4/6 TCP(UDP) IPv4 Case 4 Case 3

  5. Problems with IPv6 application transition • Dual stack node does not mean having both IPv4 and IPv6 applications. • We cannot know the version of peer application only by DNS name resolution. • We may have various versions of the same application. • Transition mechanism considerations

  6. Guideline summary • In order to allow applications to communicate with other IPv6 nodes, the first priority is to convert the applications supporting both IPv4 and IPv6. • The applications should do iterated jobs for finding the working address out of addresses returned by getaddrinfo(). • The applications will have to work properly in IPv4-only nodes (whether IPv6 protocol is completely disabled).

  7. Next steps • It is time to discuss about ‘IPv6 application transition’ in v6ops. • This draft can help application developers understand how to develop IP version-independent applications during the transition period. • Examples will be replaced by very short working applications. • Accept as wg item (Informational).

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