Thread:Griffguy26/@comment-252417-20171204191124/@comment-29003107-20171204212638

actually wait I found it so here it is:
 * If a logged-in user is blocked, then they could evade the block by logging out and editing anonymously. To prevent this, you can set the block to include the IP address that the logged in user is using. Check the box marked "Automatically block the last IP address used by this user, and any subsequent IPs they try to edit from".