>Now obviously, there's a breakpoint at which synchronizing the local >database from the master becomes cheaper than doing lookups. Right >now, that's quite high, but it will move lower with IPv6.
Why do you say that? The number of computers on the net isn't going to be much bigger with IPv6. They're just spread out in a much larger address space. We also seem to have a diagreement about BL usage patterns. The BLs I know have a smallish number of very heavy clients and then a long tail of clients that get smaller and smaller. It makes sense for the biggest ones to keep their own mirrors, but there's a whole lot of small ones, each of whom will never look at more than a small fraction of the data, although their aggregate traffic is substantial. So if you say that everyone has to maintain a mirror to get a BL's data, you're saying that small clients can't use BLs at all. Is that realistic? Regards, John Levine, jo...@iecc.com, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. http://jl.ly
