Waste will kill ipv6 too

Wed Dec 20 19:18:51 UTC 2017

This may be helpful:

https://www.ripe.net/publications/docs/ripe-690/

Regards,
Jordi

-----Mensaje original-----
De: NANOG <nanog-bounces at nanog.org> en nombre de Mike <mike-nanog at tiedyenetworks.com>
Responder a: <mike-nanog at tiedyenetworks.com>
Fecha: miércoles, 20 de diciembre de 2017, 19:26
Para: <nanog at nanog.org>
Asunto: Waste will kill ipv6 too

    On 12/17/2017 08:31 PM, Eric Kuhnke wrote:
    > some fun examples of the size of ipv6:
    >
    > https://samsclass.info/ipv6/exhaustion-2016.htm
    >
    > https://www.reddit.com/r/theydidthemath/comments/2qxgxw/self_just_how_big_is_ipv6/
    >

    Every time I see these "Look how many more addresses we have now with
    IPv6", I just shake my head.

      Yes, the address space is very large. But, all of the protocols, all
    of the addressing guides, all of the operational 'best practices', ALL
    OF IT, increases by orders of magnitude the amount of waste along with
    it. Call this the 'shavings', in IPv4 for example, when you assign a P2P
    link with a /30, you are using 2 and wasting 2 addresses. But in IPv6,
    due to ping-pong and just so many technical manuals and other advices,
    you are told to "just use a /64' for your point to points. So, the
    actual waste is dilutes the actual implementable size of the total ipv6
    address space due to the waste component. And I have not yet seen any
    study or even proposed theory to explore what the IPv6 Internet would
    look like, if used in place of all IPv4 in all the places and ways that
    it's used. I think, in time, we will discover that we have only
    increased our usable ip space by no more than 2 orders of magnitude over
    that which is achieved in ipv4, and we will be looking again at a global
    ip protocol upgrade I bet within my lifetime. While we are at it, why is
    nobody thinking or talking about the looming exhaustion of ieee OUI
    addresses? Network cards made 15 years ago and since consigned to the
    electronics scrap heap in the sky, take with them their addresses never
    to be reused again (unless you are a freak like me and keep some for
    'positively never assigned anywhere'). And old dead companies that were
    assigned OUIs, they get 24 bits of address space to take to their
    graves. We should be re-thinking mac addressing altogether too.

    (Please no hate mail, these opinions are strictly mine...)

    Mike-

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