The last time I looked in the Unity SDK, MultiPlayer 2.0 was using IP v4 addresses and we need to publish the game on iOS.
Didn't I look in the right place or it is not yet supported? if not, do you have any roadmaps or ETA on it? We are currently using the legacy system but would like to switch because probably the new match maker will remove the need for us to write our own.
We are on the indie plan.