That would make sense, but its hard: - You need to identify the traffic to be filtered and the post states: "Due to always different destinations (IPs, ports,

That would make sense, but its hard: - You need to identify the traffic to be filtered and the post states: "Due to always different destinations (IPs, ports, packet size) (..)" - You need to maintain some agreement with a large number of ISPs - You need to maintain some gossiping infrastructure to these ISPs - ISPs may not care about your DDoS attack