Hi, I'm trying to find all causes of multiple origin AS problem(MOAS) as follows, but not sure if it's complete. Also please let me know how popular each item is, especially item 3 and 4 that I'm very curious about.
1. Internet Exchange Points, we have observed a list of this prefixes, although they generally are not announced to the DFZ. 2. Anycast, rare, but occurs sometimes, for example, 192.88.99.0/24, 2002::/16, and 2001::/32 3. Multi-homing with Private AS number 4. Multi-homing using static route (customer doesn't have AS number) 5. Misconfiguration 6. Hijacking 7. What else? Thanks, Yaoqing
