At 17:02 06-06-2009, Scott Leibrand wrote:
While we do need everyone to start supporting IPv6 as soon as
possible, the requirement for dual-stack connectivity means there will
be a continued need for IPv4 addresses, at least for transitional
technologies, until almost everyone has transitioned to IPv6 and all
IPv4 islands are using something like NAT-PT to talk to the IPv6
Internet. That will take a few years past IANA exhaustion, at best,
and may take a decade or more.
Adding to what Scott said, this is not like the transition between
ARPANET and the Internet which took over five years. Some people
have suggested not to extend the lifetime of IPv4 by adopting such
policies. Unfortunately, given the scale of the Internet, there will
still be a need for IPv4 for the years to come. There may be IPv4
and IPv6 islands. You'll need gateways (dual-stack hosts) to connect
them together. It's not so difficult, relatively speaking, for web
access. Google, for example, already offers IPv6 access for some
networks. There are a lot of other "application" protocols in use
over the Internet. The translation gateways to get them to work
probably won't be on the ISP side as there is less demand.
Take a look at your network and find out how many of your devices
support IPv6. Find out how many of the software you use have IPv6 support.
Regards,
-sm
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