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Re: So -- what did happen to Panix?
On Jan 27, 2006, at 11:39 AM, Joe Abley wrote:
Suggested solutions do not have to solve every possible problem.On 27-Jan-2006, at 11:12, email@example.com wrote:Suppose AS 9327 decides to originate 18.104.22.168/24, but prepends 4555 to the AS_PATH as it does so. Suppose 9327's uses a transit provider which builds prefix filters from the IRR, and the "as9327" aut-num object is modified to include policy which suggests 9327 provides transit for 4555. Suppose this is not actually the case, though, and in fact 9327 is a rogue AS which is trying to capture 4555's traffic.but by definition, the right-most entry is the prefix origin...
Knowing the "correct" origin will stop accidental announcements, like the one under discussion in this thread.
And, I suspect, most problems we see today of this sort. We are not (yet) to the point where maliciously originated prefixes are as big a problem as accidentally originated prefixes.