The developers have apparently resolved this issue in an upcoming patch. When the patch is applied you will be able to:

  • Click on Advanced Settings to list all Network Interfaces.
  • Select the radio button corresponding to the network interface you would like simba to use
  • Select/de-select network interfaces you do/do not want to be touched.

I don't know when the patch will be released into the channel. You will know that the patch has been applied by checking from a terminal console what revision of Simba is installed.
server:~ # rpm -q simba