Mark Andrews wrote:
A single anycast server DOES NOT and never can provide diversity from the
client’s perspective.
Additionally multiple servers in the same /24 (IPv4) or same /48 (IPv6) should
be treated as a
single server for diversity testing as these are accepted longest accepted
prefixes.
This WG should conclude that IPv6-style anycast is useless and
tell IESG obsolete it.
RFC 7108 describes the implementation of a method that includes a single
point-of-failure by design (see discussion of IDENTITY.L.ROOT-SERVERS.ORG in
section 5).
In short, this is an operational question with multiple answers and I don't
like the idea of formalising an over-simplistic restriction in the protocol
specification.
How do you do IPv6 anycast with L servers?
Masataka Ohta
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