Comment by ogsuspect

See ClashTheBunny's comment about Control sockets. You can `man 5 ssh-config` and search for the following settings 'ControlMaster', 'ControlPath', 'ControlPersist'. ControlMaster is a yes/no/auto... you probably want 'auto'. ControlPath is the path where the control socket is created. You probably want something dynamic like `ControlPath ~/.ssh/ctrl-%h`. ControlPersist specifies how long the control socket should remain open for. This enables SSH connection multiplexing.