> There is an important difference between v4 and v6 - we've already paid the > (by now massive) deployment costs of v4.
there is another important difference between v4 and v6 - we don't have enough addresses for everyone to use v4. > It would be nice if going through the immense upheaval and cost of deploying > 6 (or whatever our next big step is) actually got us a solution to one of > our most pressing real problems. yes, it would. but that has to be balanced against the cost of second-system effect. Keith