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IPv4 and IPv6 Transition Technologies Problem Statement

This presentation discusses the challenges in networks transitioning to both IPv4 and IPv6, impacting stack quality with various technologies. It addresses issues like telling dual-stack hosts which protocol to use and for which destinations. The presentation emphasizes considerations for a smoother transition and addresses concerns over potential breakages in existing technologies.

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IPv4 and IPv6 Transition Technologies Problem Statement

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  1. Joint Sunset4/DHCSummary IETF 87 DHC WG Berlin, Germany Thursday, 1 August, 2013

  2. Problem Statement • Many networks will have both IPv4 and IPv6, but with varying transition technologies affecting the quality of those stacks • “real” IPv4 (no NAT) • CGN IPv4 (potentially broken for some apps) • NAT64/DNS64 (also potentially breaks things) • IPv6 (only) • How do you tell dual-stack hosts which to use/avoid? • For which destinations? • With which protocol(s)? • Happy Eyeballs helps, but can be non-deterministic

  3. draft-ietf-dhc-dhcpv4-over-dhcpv6 • Presentation to be repeated later today • Conclusion: • No specific objections or comments

  4. draft-ietf-dhc-v4configuration • Presentation to be repeated later today • Implementation details discussion • Minor clarification on requirements regarding future v4 options

  5. draft-wing-dhc-dns-reconfigure • Presentation to be repeated later today • A bit misleading name, generic mechanism for more than just DNS • Lots of discussion about: • Multiple relays • State management and recovery • What constitutes a valid address? • Concern: not easy to detect deprecated addr

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