In message <199604280751.AAA00306@elite.exodus.net>, Robert Bowman writes:
There is a HUGE problem with regards to this. When I look at "certain" providers and the way they are advertising, this is very common:
206.79.0.0/16 206.79.108.0/24 206.79.224.0/22
etc etc.
Note that only 206.79.0.0/16 is registered in the IRR. 206.79.0.0/17, 206.40.64.0/19 are also registered but not announced. I don't know the situation in this case but they may be intending to aggreagate but not entirely suceeding. For example, the /24 may be a DMZ between providers which another provider needs for management. I'm working on some routing evaluation software and a secondary benefit of this may be to get some stats on this sort of problem. There may be over 1,000 such more specific prefixes, not registered in the and covered by aggregates that are registered in the IRR and announced. There are still bugs in the radix tree code but ones I've checked manually this morning indicate that the bugs may be reducing the estimate rather than inflating it. Curtis