[INS-20802] Oracle Net Configuration Assitant failed

I am installing 12c database standalone, for ol6, and received this error:

[INST-20802] Oracle Net Configuration Assistant failed

In the install log I have only the following:

INFO: Using paramFile: /home/oracle/Downloads/database/install/oraparam.ini

INFO:

INFO:

INFO: Checking Temp space: must be greater than 500 MB.   Actual 43319 MB    Passed

INFO: Checking swap space: must be greater than 150 MB.   Actual 3996 MB    Passed

INFO: Checking monitor: must be configured to display at least 256 colors.    Actual 16777216    Passed

INFO:

INFO: The commandline for unzip:

INFO: /home/oracle/Downloads/database/install/unzip -qqqo ../stage/Components/oracle.jdk/1.6.0.37.0/1/DataFiles/\*.jar -d /tmp/OraInstall2014-05-12_11-26-56AM