I recently ran into a following error while running Exadata checkip script during Exadata deployment process.
Processing section FACTORY ERROR : 192.168.1.1 is responding to ping request
I checked and realized above IP is being used by another device on the network. Good news ! As per Oracle Exadata Manual this is a factory default IP used by older Exadata Machines and we can ignore this error.
As Per Oracle Exadata Manual (2.5 Default IP addresses) , In earlier releases, Oracle Exadata Database Machine had default IP addresses set at the factory, and the range of IP addresses was 192.168.1.1 to 192.168.1.203.