On Mon, 04 May 2009 17:03:31 -0400, Bill Stewart <nonobvious@gmail.com> wrote:
When I came back, I found this ugly EUI-64 thing instead, so not only was autoconfiguration much uglier, but you needed a /56 instead of a /64 if you were going to subnet. Does anybody know why anybody thought it was a good idea to put the extra bits in the middle, or for IPv6 to adopt them?
"64bit MAC" -- which pretty much exists nowhere. It's a repeat of the mistakes from IPv4's early days: CLASSFUL ROUTING. I'm with you. I wish vendors and spec designers would just get over it and let people subnet however they want. If I want to set a network to be /96 or /120, I should be allowed to do so. Yes, I know autoconfig will not work -- and I don't want it to. I can make /31 IPv4 routes -- no router I've ever used complained about it. (that sends 2 addresses to one place; what happens in the place is not the router's concern.)