On Tue, 29 Apr 2003, Paul Vixie wrote:
geoff huston is the only person i know who's making formal progress on that question. i know from some zebra log files that iana's unallocated space gets advertised from time to time, then withdrawn. presumably an attack was launched during the announcement but i don't have any data showing this.
Looking at one log, the most persistant announcer of bogon space is AS 4554 (Bill Manning), Net 39.0.0.0/8. I don't know Mr. Manning's intentions, malicious or otherwise.
apparently, nothing. to the extent that peering is by agreement, the majority of such agreements now in force do not require the other party to route-filter their customers. which is funny, since they tend to drone on endlessly about the importance of a 24x7 NOC, which in operational practice, matters lots less.
I don't do peering anymore, but a peering agreement did include a paragraph concerning route filtering. Sorry, but it got translated by the lawyer along the way. "The parties shall use through the Interconnection Point only Autonomous System Numbers, Internet Protocol addresses, or other routing identifiers assigned or delegated in accordance with IANA, a mutually recognized address registry, or other mutually agreed procedure to the party or its customers. The parties will use reasonable efforts to screen routing identifiers not in compliance with this paragraph from distribution across the Interconnection Point." Of course, as you know, a peering agreement is about as enforcable as a ???? Well, I can't think of anything that unenforcable.