Board Thread:General Discussion/@comment-26184769-20170628200844/@comment-1757994-20170628210115

This is the post I just made to the tech update announcing IPv6:
 * IPv6 support is now live! This means you will start seeing some longer IPv6 IPs in place of IPv4 IPs for anonymous users - however, they will behave much the same. If you spot any problems, please let us know!

FYI, ISPs typically hand out IPv6 addresses in /64 blocks (in some cases in /48 blocks). So if you see an IPv6 vandal, it's not enough to block his /128 address, because he's got 2^64 (and maybe 2^80) addresses from his ISP. In your case, the person you are trying to block is using the address block, which contains more /128 addresses than you want to block 1 by 1.