From a machine running 4.3.11+dfsg-0ubuntu0.14.04.3, I just tested smbclient towards DFS shares / windows 10 share, cifs mount of DFS share, sharing a local folder with ACL set (net usershare) and then connecting to if from another machine running 16.04 with samba4 2:4.3.11+dfsg-0ubuntu0.16.04.1.
From a machine running 4.3.11+ dfsg-0ubuntu0. 14.04.3, I just tested smbclient towards DFS shares / windows 10 share, cifs mount of DFS share, sharing a local folder with ACL set (net usershare) and then connecting to if from another machine running 16.04 with samba4 2:4.3.11+ dfsg-0ubuntu0. 16.04.1.
All works as expected from my side.
Thanks guys!