> No.
> If they did, 80% of the internet would not be visible to them today.,
sure. and pigs fly.
I don't think that anyone have ever filtered on old class-based sizes. What
I know is that the most restrictive filters have been on RIR allocations
boundaries, and for old "non-returned" A:s and B:s there have bene filters
on /8 and /16. Swamp space have never been filtered.
...and the clue-less on the Internet is (still) less than 80%. It's more
like 20%. See http://mcvax.org/~jhma/routing for one example of how much we
could gain if we actually aggregated...
- kurtis -