Seems to be partially working. You can see the reader name in Net iD, but it won't notice cards or when you remove the reader.
Connecting from a Windows 7 machine works fine though, so it doesn't seem to be anything wrong with the server.
With the latest fix added to bug #5011, the smart card redirection works against a Windows 2012r2.
(In reply to comment #1)
> With the latest fix added to bug #5011, the smart card redirection works
> against a Windows 2012r2.
Briefly tested using NetID
Extensivly tested Windows 2012 Server (not R2) using NetID, Sign/Verify/Encrypt/EDecrypt of files using smartcard works fine, also no problems for detecting if card is in read or not.
Tested both in a remote admin session and in a RDS session, with and without sound redirection enabled.
Works well on Windows 2012 R2 Server. Tested using NetID (signing, verifying, encrypting, decrypting). Used build 4496.