Issue 150

Per issue https://github.com/opentechinstitute/luci-commotion/issues/150

To test this take two existing nodes and turn mesh over ethernet in the additional network interfaces section. Then plug them together and see if they mesh. 

You might want to test just one first by setting it up with a compatible static ip on your device with multicast/olsrd and simply wiresharking for the broadcast traffic. But I have never played with that over ethernet so I don't have instructions. 

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