/alts command #3864

Feature request

Feature description:
I'd like a new command /alts which shows you all players who have connected from the player's IP.

How the feature is useful:
As it is now, to see other accounts that have connected from the same IP as another player, I need to first use /seen on the player to get the player's IP, then /seen on the IP to get all players who have connected from that IP. I use this method often and would prefer if this could be shortened to just 1 command. I would like a command that allows players to more easily see which players have connected from the same IP as a certain player. For example, I would use the command /alts DrBot and it would return all players who have connected with the same IP as the player DrBot.

EDIT:
Alternatively, I think it could make sense for /seen <player> to also show the other accounts which connected from that player's IP.