@stephenmhall it needs a controller with an ip address, not a gateway.
https://www.mysensors.org/about/network describes the difference between a controller and a gateway.
Are you using the mqtt gateway or the ethernet gateway?
According to the Vera page, Vera supports ethernet gateway, but not mqtt. Therefore you should probably use the ethernet gateway and leave MY_CONTROLLER_IP_ADDRESS disabled/commented (the way it is by default). You then add the ethernet gateway to Vera according to the instructions here.
I don't use Vera though so I have not tried this myself.