Masataka Ohta wrote:
It would be nice if 5 or 10 years ago there would have been a good
standard to do address selection.
11 years ago in draft-ohta-e2e-multihoming-00.txt, I wrote:
End systems (hosts) are end systems. To make the end to end principle
effectively work, the end systems must have all the available
knowledge to make decisions by the end systems themselves.
With regard to multihoming, when an end system want to communicate
with a multihomed end system, the end system must be able to select
most appropriate (based on the local information) destination address
of the multihomed end system.
The primary reason why the IPv4 -> IPv6 transition is so painful
is that it requires everyone one and everything to become multi-homed
and every software to perform multi-connect, even though most
devices actually just have a single interface.
It would be so much easier if hosts on the public internet could
use one single IPv6 address that contains both, the IPv6 network prefix
and the IPv4 host address, and then let the network figure out whether
the connect goes through as IPv4 or IPv6 (for IPv6 clients).
-Martin
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