@TommiP Got the same config Rpi3 model B with open hab 2. I use this config and it can connect to gateway on same box. Ehternet is whats supported with OpenHaB
./configure --my-gateway=ethernet --my-leds-err-pin=12 --my-leds-rx-pin=16 --my-leds-tx-pin=18 --my-transport=nrf24 --my-rf24-irq-pin=15
If you run it in debug mode what is the output then?
I dont get my nodes to connect to Gateway atm but everything else looks like it works.
/Håkan