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cost of dual-stack vs cost of v6-only [Re: IPv6 on SOHO routers?]

  • From: Pekka Savola
  • Date: Thu Mar 13 09:30:24 2008

On Wed, 12 Mar 2008, Leo Bicknell wrote:
In a message written on Wed, Mar 12, 2008 at 03:06:24PM -0500, Frank Bulk - iNAME wrote:
Furthermore, he stated that networking equipment companies like Cisco will
be moving away from IPv4 in 5 years or so.  This is the first time I've
heard this posited -- I had a hard believing that, but he claims it with
some authority.  Anyone hear anything like this?  My own opinion is that
we'll see dual-stack for at least a decade or two to come.

ISP's are very good at one thing, driving out unnecessary cost. Running dual stack increases cost. While I'm not sure about the 5 year part, I'm sure ISP's will move to disable IPv4 support as soon as the market will let them as a cost saving measure. Runing for "decades" dual stacked does not make a lot of economic sense for all involved.

So, can you elaborate why you think the cost of running dual stack is higher than the cost of spending time&money on beind on the bleeding edge to do v6-only yet supporting v4 for your existing and future customers still wedded to the older IP protocol?

Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings