Board Thread:General Discussion/@comment-26184769-20170628200844/@comment-1757994-20170629015927


 * Go to w:c:animated-spinning:Special:Block.
 * For, put in.
 * For, put in whatever duration you want. I suggest something not infinite, because residential AT&T customers get dynamic addresses. Maybe try a month. If he comes back, you can always make it longer.
 * Set a reason and whatever other options you want.
 * Click the button.

You can also go back and unblock the /128 addresses that you blocked before. They'll still be blocked by the one you will have just implemented.