I am setting up a new Server 2012R2 to runVPN via RAS. I have not set one of these guys up since server 2003, so it's been a long time.
Anyway, I'm 99% the way there. But I am trying to achieve split-tunneling while not loosing access to all my other subnets (including remote office subnets) .
SO, since I have both IPv4 and IPv6 setup for the RRAS server, I have turned on IP forwarding, but turned off "Enable Default Route Advertisement" on the IPv6 interface. On the IPv4 interface, I have defined my other subnets and the relevant gateways.
When I connect via client, I still only get routes to my subnet that the server lives in. Any attempt to ping/traceroute the other subnets go out my normal gateway (not on the VPN).
Again it's been a long time sine I've set this up, and Ipv6 wasn't part of it.