On 9/16/12, Randy Bush <randy@psg.com> wrote:
and don't bs me with how humongous the v6 address space is. we once though 32 bits was humongous. [snip]
When you consider that IPv6 is a 64-bit address space, that is 64 bits are for addressing subnetworks, the "/64 spend" for addressing hosts within a network as compared to v4 is 0%, not 50%. And there are twice as many IPv6 bits for addressing such /64s, as the entire IPv4 address space. 2^64 minus 2^32 is a humongous number indeed, and we know numerically just how humongous it is. The RIRs can collectively hand out 450 /32s a day or one /24 and one /25's worth a day, for the next 100 years, before a single /8 would be exhausted. And if IPv6 addressing resources last 100 years, I would say, that the objective was more than met.
randy -- -JH