IPv6 Address

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IPv6 address scope

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Scoped address architecture[1]

Historical Notes

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Transition challenges

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As of 2009, many DNS resolvers in home-networking NAT devices and routers were still handling AAAA records improperly. Some of these simply dropped DNS requests for such records, instead of properly returning the appropriate negative DNS response. Because the request was dropped, the host sending the request had to wait for a timeout to trigger. This often caused a perceived slow down when connecting to IPv6 hosts.

Domain Name System

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  • In 2006 (and earlier), it was observed that many IPv6 DNS queries were sent unnecessary, due to poor implementations of iterative resolver routines. In october of that year—to help iterative resolver developers—the IETF published an implementation advice [2] to alleviate unnecessary DNS queries.

See also

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References

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  1. ^ Deering, S.; Haberman, B.; Jinmei, T.; Nordmark, E.; Zill, B. (March 2005) IPv6 Scoped Address Architecture, The Internet Society. RFC 4007.
  2. ^ Larson, M.; Barber, P. (1 October 2006)Observed DNS Resolution Misbehavior, The Internet Society. RFC 4697, BCP 123.