the preso link is below, you didnt read it yet.. :) you can hijack any address space providing your route is preferred either because it is more specific, less specific, shorter as-path..
Steve On Thu, Nov 09, 2006 at 10:59:20PM -0700, Josh Karlin wrote: > > Wouldn't they want to hijack more specifics to spam? I doubt much of > that space is going to correctly route for spamming purposes. > > On 11/9/06, Hank Nussbacher <[EMAIL PROTECTED]> wrote: > > > >On Thu, 9 Nov 2006, Josh Karlin wrote: > > > >> Here is one that is somewhat the opposite, the AS announced a > >> significant portion of IANA allocated space. Note, they are large > >> blocks and as such probably did not cause much damage because most > >> networks announce more specifics. My question to the community is, > >> what kind of misconfiguration could cause this set of prefixes to be > >> announced? I asked the AS responsible, but have not had a response. > > > >Misconfiguration? :-) That's a nice word for spammer. See Joe's PPT at: > >http://www.uoregon.edu/~joe/maawg8/maawg8.ppt > > > >AS29449 is not the problem. It is the upstreams of AS5602 (KPNQwest > >Italia) and AS286 (KPN) that let this crap leak. > > > >-Hank Nussbacher > >http://www.interall.co.il > > > > -- Stephen J. Wilcox BSc (Hons). CCIE #10730 Technical Director, Telecomplete http://www.telecomplete.co.uk/