i really wish i could find the famous quote that said (about computer memory addressing, i believe) that, no matter what size you choose, it will be too small sooner than you planned. So what's your suggestion? Turn off the Internet, and go fishing?
no, snorkeling. eat your heart out, cold weather boy! don't be silly. given the stupid political decision not to use variable length addressing, we need to be reasonably prudent. for p2p links, many of us use /126s. assign the customer the space they actually need. throw in one extra bit for insurance, two if you feel profligate. but not a /48. discuss getting rid of the /64 silliness. remember tlas? at least they're gone. yes, this is the "ipv4 mindset." but, after all, the v6 so-called architects only gave us ipv4 second system syndrome, no scalable routing, no extensible addressing, no loc/id sep, ... we've gone from a limit of 640k of ram to 1gb. big whoopiedoo. in ten years, we'll wish that was 1tb. randy