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IPv6 Transition to Cost US $75 Billion?

darthcamaro writes "There are alot of reasons why the US isn't moving as quickly as Japan and Europe in migrating to IPv6. One of those reasons is likely cost. An article on Internetnews.com cites an unreleased 'Dept. of Commerce report estimating it will take $25-$75 billion to pay for the transition.'"

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  1. Re:What's needed? by Michael+Hunt · · Score: 5, Informative

    You don't seem to know what you're talking about.

    Any ISP with 100k customers (or even one with an order of magnitude less) is going to be assigned a /32 (or shorter) prefix, which is guaranteed to be globally portable.

    The basic structure of an IPv6 address is:
    0-31 Top-level network bits
    32-47 16 bits for customer allocations (/48)
    48-63 Customers' subnetworks
    64-127 Local subnet addressing (EUI64)

    If you've been allocated a /48 by your ISP, sure, you'll need to renumber every time you change ISPs. If you've been allocated a /32 or shorter prefix by a RIR, then you won't.

    BGP4+ Routing tables will also be correspondingly smaller, because they'll only contain a number of /32 prefixes (a much smaller number than the current IPv4 soup, which includes prefixes as long as /24 for legacy reasons.)

    I humbly submit that you do more research in future.