These instructions are for the CR-120/CR-150 Network-Enabled Scanners.
In the DriverOptions.ini for the CR-120 or CR-150 file, typically named "Canon-CR120CR150.ini", set the following option:
[EthernetConfig]
ScannerIpAddress=XXX.XXX.XXX.XX
Where the X's are the Scanner's IP address.
See also: