User blog comment:Meighan/Wiki Wisdom: Reacting to Trolls and Vandalism/@comment-27188908-20120331110023/@comment-961279-20120402041044

Put a range block on 112.198.0.0/16. Because you will potentially be blocking other people from that same area, it can't be a permanent block. Just make it for one month or three months, however long you think it will take for this person to lose interest.