This is an error I found the other day while running dbca on a Exadata Virtual machine and using a prevoiuosly created template for the database
At first glance, could not find any related note in Oracle Support, but a search in Google got some results, and directed me to the correct note.
The problem happens because parameter cluster_interconnect is set to one or more specific IPs. Of course, those IPs are only available in one node but DBCA tries to use them for all nodes. Obviously, it fails.
Solution: There are a couple of solutions, but being in DBCA, the best thing to do is leave the parameter cluster_interconnect empty and update it after database has been created. This is what I did and worked like a charm.
Reference: DBCA errors when cluster_interconnects is set (Doc ID 1373591.1)