The list of constraints due to the need for voluntary adoption is at:
http://www.firstpr.com.au/ip/ivip/RRG-2009/constraints/
I hope people will comment on this, suggest improvements etc.
Tom Vest expressed his support for an earlier version, and I have and
I think Joel Halpern agrees with at least some of it. Three other
people expressed their support for an earlier single-paragraph
statement which I expanded to create the current draft list.
There is a changelog mentioning the minor changes to the previous
text. I added two new paragraphs at the end, the first of which I
hope at least partially reflects Tom Vest's concerns:
The benefits resulting from the best imaginable
solution for IPv4 may be limited by shortage of IPv4
space and resulting difficulties for new networks in
gaining this space. While no such restrictions exist
with IPv6, constraints similar to 2, 3, 4 and 5 are
likely to continue to be a barrier to widespread
migration to IPv6.
The above constraints generally apply for IPv4 when
end-user networks already have IPv4 space and need to
retain full connectivity to all, or almost all,
existing hosts. They may not apply in other
circumstances, such as if IPv4 space is unobtainable
and/or if the functionality of devices in a newly
established end-user network does not depend so
strongly on connectivity to IPv4 hosts and/or if the
hosts in the new network are all purpose built for
it. Development of a large IPv6-based cellphone
network may exemplify these circumstances.
There is also a new footnote which discusses various questions which
may arise regarding the list, but which I think need not be mentioned
in the list itself.
I will reply to Tom's most recent message in a new thread:
Scalable solution hitting IPv4's limits
- Robin
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