Comment Re:All IPs cannot be used (Score 1) 222
Sure, there are some /8s out there (e.g. MIT), but breaking them up is not a nice thing to do. Switching the backbone entirely to CIDR would cut our routng tables by a factor of 10. It would just require re-IPing everything that has an address. Everything. Not gonna happen this week.
And 2^32 is a high limit, sure, but not that high. However, exponential growth is a quick sucker. IPv6 provides enough addresses to give an IP to every grain of sand on every beach in the world. Even counting huge tracts of waste due to allocating contiguous blocks, we are not going to run out until we leave the planet. Heck, no one is at all scared of running out of ethernet MAC addresses....
And 2^32 is a high limit, sure, but not that high. However, exponential growth is a quick sucker. IPv6 provides enough addresses to give an IP to every grain of sand on every beach in the world. Even counting huge tracts of waste due to allocating contiguous blocks, we are not going to run out until we leave the planet. Heck, no one is at all scared of running out of ethernet MAC addresses....
