I am not sure there is a magic way to mitigate these attacks permanently other than playing cat and mouse until the attacker gets tired. Linode has in fact miti

I am not sure there is a magic way to mitigate these attacks permanently other than playing cat and mouse until the attacker gets tired. Linode has in fact mitigated the attacks, only to find them pointing to a different part of their infra or DCs. At this point, it is probably a good sign that they haven't gone completely down (for long). Current tooling and botnets make DDoS-ing fairly easy today, despite countermeasures.