-After changing the configuration, @arvados-controller@ must be restarted for the change to take effect. When enabling, the change will only affect containers started from that point on. When disabling, access is removed immediately for any running containers, as well as any containers started subsequently.
+After changing the configuration, @arvados-controller@ must be restarted for the change to take effect. When enabling, shell access will be enabled for any running containers. When disabling, access is removed immediately for any running containers, as well as any containers started subsequently. Restarting @arvados-controller@ will kill any active connections.