Wash, rinse, repeat for the other 70,000 routers you manage for customers... This is definitely NOT a half-rack in a colo fix. Just contacting the customers is a feat.
And I completely agree that it's a big pain to coordinate this. In the same hand, SBC and all other 'big' providers use BGP to dynamically update their routing tables. Their BOGON filtering should use the same sort of mechanism. If they're not going to use something like the Cymru BOGON BGP feed they should build their own and should have configured their managed routers to query that from the beginning. As more old-BOGON IP's come into play, more and more of the Internet is going to 'fall off' to these legacy route access list restricted routers. As much as I would have liked to coin the term 'network monkey', I read it in this thread by someone much more creative than I. :-) James Laszko Pipeline Communications, Inc. james@pcipros.com