Don't know where to post, so if this is the wrong place, please move the post. How is it possible, that 2 different user in my forum, as different locations within the city, can have the same IP? The story: One of my administrators mention that he has a lot of problems with his connection, so we monitored it. One day, he logged in, and just 30 seconds later, a new user registered, with the SAME IP address. At this moment, my admin got connection problems. He has dynamic IP. I told him to just disconnect and reconnect after 5 minutes. He did that and at the moment he disconnected, the new user which had the same IP vanished too. Any idea how this is possible?