in an earlier message, I wrote:
OTOH, I don't see why IPv6 will necessarily have significantly more
levels of assignment delegation. Even if it needs a few more levels,
6 or 7 bits out of 128 total is a lot worse than 4 or 5 bits out of 32.
the last sentence contains a thinko. it should read:
6 or 7 bits out of 128 total is a lot better than 4 or 5 bits out of 32.
(I originally wrote the comparison in the other order, but when I swapped
sides, forgot to change the direction of the comparison.)