Unsavory but true, it's nice in a way that ip addrs have a cost. Kinda like phone numbers. The naive suggestion for ipv6 in that article is what I first though

Unsavory but true, it's nice in a way that ip addrs have a cost. Kinda like phone numbers. The naive suggestion for ipv6 in that article is what I first thought, block a /64, but since that might still be too cheap, it also quotes a more robust algo of dynamically expanding the blocking scope.