Board Game Arena

How long does the "same IP address" tag last? I just had a friend over to play physical board games, but occasionally we play HIve, Tokaido and Stone Age online whilst at work (yeh, naughty I know, I should be working) So as we played the physical board game Seasons he took a few moves on his games. Now we get a "Same IP" tag. I fully accept why this has triggered and why it needs to be but does it stay that way if he starts taking his moves when he returns home?

For the record we started a board of Seasons on here as we liked the game that much that we wanted to play that with two other people.