When We Run Out of IP Addresses

Discussion in 'Apple, Inc and Tech Industry' started by Ca$hflow, Mar 26, 2011.

  1. Ca$hflow macrumors 6502


    Jan 7, 2010
    London, ON
    Every router, smart phone, or other device on the Internet must have its own Internet Protocol (IP) address. Since long before it became a part of everyone's daily life, the Internet has used the 32-bit IPv4 standard. You've seen the numbers; they look something like

    There are almost 4.3 billion possible 32-bit numbers. At the dawn of the Internet, that probably seemed like more than enough.

    Not anymore. Last month the Internet Corporation For Assigned Names and Numbers (ICANN) announced that it had handed out its last batch of IPv4 numbers.

    But don't panic. It will take awhile before those numbers are actually assigned to devices. Besides, there's a replacement in the wings. IPv6 uses 128-bit numbers. There are an awful lot of those--more than I can describe with words like billion. Let me put it this way: If every one of the seven billion people in the world got their own private stash of a trillion addresses, we'd still have much more than 99.99 percent of the numbers free.

    I don't think we're going to run out any time soon.

    The transition from IPv4 to IPv6 is a little like Y2K (remember that). Everyone has known for years that something had to be done, but few have bothered to make the necessary changes. Very soon, they will have to.

    But let's not panic like it's 1999. This is a problem for ISPs and big networks. For regular users, the worst-case scenario is that your ISP may send you a new modem and you'll have to replace your router. And what about software? Windows has supported IPv6 since XP SP1.

    Microsoft has offered to pay $7.5m (£4.7m) for net addresses from bankrupt telecoms firm Nortel. The 666,624 IP version 4 (IPv4) net addresses were put up for auction as part of the sell-off of Nortel's assets.

    Does anyone know if IPv6 is supported in OS X?
  2. v66jack macrumors 6502a


    May 20, 2009
    London, UK
    As far as I'm aware pretty much everything is already IPv6 ready. Correct me if I'm wrong but I presume OSX is included.
  3. Ca$hflow thread starter macrumors 6502


    Jan 7, 2010
    London, ON
    My only thought is if ip address will now be 128bit then how long will the number be?
  4. apunkrockmonk macrumors 6502a


    Nov 20, 2005
    Rochester, NY
    OSX has had IPv6 enabled be default at least since 10.4. Probably longer than that if I had to guess though.
  5. miles01110 macrumors Core


    Jul 24, 2006
    The Ivory Tower (I'm not coming down)
  6. maflynn Moderator


    Staff Member

    May 3, 2009
    consumer equipment is IPV6 ready, ISP, backbone stuff does not appear to be ready for any sort of cut over. Some of the problems is the 6to4 tunnels don't work. That is IPV6 networking cannot access IPV4

    Ars has some good articles on this stuff
    This article states how ugly the switch over can be

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