G400D & BuildInEthernet. Is it implemented?

Does anyone has buildinthernet running on a G400D + G400Header with MF 4.3 beta R3?

I dont have it running (have only a Raptor).
But I read several times on the froum that it works.
It even works when the PHY from the G400D is added to the G400S
Not sure about 4.3, but I assume it will work.