Changing IP addresses on Oracle Database Appliance

Dear collegues,
When we meet the problem we do steps below:

   1. Corrected file /opt/oracle/oak/onecmd/onecommand.params with new IP addresses

   2. Ran steps 0, 1, 2, 4, 5, 11 using
         ./GridInst.pl --s 0
         ./GridInst.pl --s 1
         ./GridInst.pl --s 2
         ./GridInst.pl --s 4
         ./GridInst.pl --s 5
         ./GridInst.pl --s 11

    3. Make some changing using information from document "Changing IP addresses on Exadata Database Machine [ID 1317159.1]"

We made IP addresses changes nedded.

But it was not simple and not easy.

To correctly and simply relocate Oracle Database Appliance we need
    - document describing that process
   - onecomand script which will automate that process (in future)

What do you think about it?