Error
drmach: Cannot unconfigure I/O board: n/w or tunnel switch failed
Description
The I/O board cannot be configured because the network or tunnel switch failed.
Recovery
Check to ensure that there is at least one other I/O board in the system to
take over the IOSRAM functionality of the specified board. If another I/O
board is not available, you must configure an additional I/O board into the domain.
If the system booted off of a device attached to the I/O board that is being
unconfigured, then an addtional I/O board will not solve this error. If an additional
I/O board is available and if this error persists, then check for failures with
the IOSRAM driver or the MAN driver.