I might not explain the background clearly and confused people. We're doing research on multiple origin AS issue, and we want to confirm if our inference is correct based on history data we collected. For example, we found several hundreds of prefixes with multiple origins more than two, some of them were inferred as anycast using our methodology, but we're not positive with the conjecture, so we want to find the ground truth from operators. Thanks for the detailed explanations.
the ucla obsession with multiple-origin announcements has a long history. the problem is that you think you can make something that looks forward. but how will you decide if tomorrow's announcement of P from A0 and A1 is anycast, ops kink, or an actual mis-announcement? randy