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What happens when there are literally truly no IPv4 addresses left for sale? Not today’s reality, but the clock is ticking.

• wmf 5y ago
  There will always be IPv4 for sale just as there is always land for sale.
  • teddyh 5y ago
    This is the “oil will never run out” argument. Technically true, but irrelevant.
    • wmf 5y ago
      I chose my analogy carefully. Oil is consumed but land and IP addresses are not.
      • jchw 5y ago
        You can't really just "find" more IPv4 though. Cloud platforms are eating blocks for breakfast, lunch and dinner, and while it's always going to be for sale, there's no reason to expect you'll be able to afford it.
        • wmf 5y ago
          Fortunately, if you can't afford IPv4 then no one else can afford it either, which means the incentive to adopt IPv6 is extremely strong and thus you no longer need IPv4.
          • jchw 5y ago
            Existing large ISPs and cloud providers with remaining IPv4 addresses and no IPv6 support are not going to have a strong incentive until after the damage is already done.
          • teddyh 5y ago
            Why won’t Google, Cloudflare, AWS, etc. simply own all most IPv4 addresses and leave all end users using NAT (or even CGNAT) to access them? This cements their businesses, since then nobody can reasonably host their own servers except through them.
            • Proven 5y ago