An I/O error was detected on one of the subchannels of the CTCM device.
Depending on the error, the CTCM device driver might attempt an automatic
recovery.
User response
Check the status of the CTCM device, for example, with ifconfig. If the
device is not operational, perform a manual recovery. See "Device Drivers,
Features, and Commands" for details about how to recover a CTCM device.