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Re: I-D ACTION:draft-baker-v6ops-end2end-00.txt

The word "very" is operative in that sentence. That said, yes, of none of the applications are using IPv4, there is an ongoing cost to maintaining it (if nothing else, training, testing, and configuration maintenance), and at some point one must presume that someone will wonder why he's paying the cost. We have people asking that question already, which is the impetus behind the discussion of IPv6-only and IPv6-dominant networks.



On Aug 16, 2005, at 9:48 AM, Templin, Fred L wrote:

Hello Fred,

I enjoyed reading this informative draft and agree for the
most part with its conclusions. I have one doubt about
section 2.1, step 5. where it says:


5. At some point in the (very) distant future, IPv6 connectivity is
sufficiently ubiquitous that IPv4 connectivity becomes
unnecessary. At this point, businesses independently remove

IPv4

      from the network as being no longer useful."


If and when we reach such a point in the (very) distant future, it
seems safe to say that *applications* would cease to use IPv4 but I
wonder if we can safely predict that businesses would remove IPv4 from
their *networks*? I.e., it seems conceivable that IPv4 might remain
in networks for some time (perhaps even indefinitely) after
applications cease to use IPv4.

Fred
fred.l.templin@boeing.com



-----Original Message-----
From: Internet-Drafts@ietf.org [mailto:Internet-Drafts@ietf.org]
Sent: Monday, August 15, 2005 12:50 PM
To: i-d-announce@ietf.org
Subject: I-D ACTION:draft-baker-v6ops-end2end-00.txt

A New Internet-Draft is available from the on-line Internet-Drafts
directories.


     Title        : The End to End Problem in a fully generalized
                           IPv4, IPv6, and IPv4+IPv6 network
     Author(s)    : F. Baker
     Filename    : draft-baker-v6ops-end2end-00.txt
     Pages        : 23
     Date        : 2005-8-15

    This note is intended to describe the end to end problem as it
    applies to a network of networks, wherein some component networks
    independently run only IPv4 with or without a transition
mechanism,
    some run only IPv6 with or without a transition mechanism and
without
    coordination of transition mechanisms, and some run IPv4
and IPv6 in
    parallel supporting native routing.

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