After configuring SSH in Luci, you may be unable to exit a OpenWRT session. After typing "exit", the terminal becomes unresponsive. Although you can continue to SSH into the OpenWRT device, everytime you exit, the terminal hangs. To fix this issue, reboot the OpenWRT device. After the reboot, exiting a SSH session now exhibits the normal behavior. Thus, everytime SSH is reconfigured through Luci, make sure you reboot the device. Hopefully, this problem will be fixed in the next release.