In Samba 4.0, the winbind sevice prefixes users with the domain (as in DOMAIN\user), but not so for groups, i.e. the calls getgrnam, getgrent, and getgrgid don't add the domain prefix. This should be added for consistency.
Created attachment 8634 [details] patchset for 4.0 cherry-picked from master Patch from master.
Assigning to Karolin for 4.0.NEXT
Pushed to autobuild-v4-0-test.
Pushed to v4-0-test. Closing out bug report. Thanks!