Azure Active Directory / Server 2016 DFS-N & DFS-R

Hi, I have just deployed a couple of Server 2016 boxes connected to Azure AD to test some DFS configurations.

It appears that DFS-N (AD integrated) and DFS-R both require permission's in AD that are not provided by Azure AD.

Anybody know if this is documented anywhere and whether there is a workaround (other than building my own AD)?

Thanks,

Paul.