winbind4 4.0.0~alpha17.dfsg2-1 (amd64 binary) in ubuntu precise

 Samba is an implementation of the SMB/CIFS protocol for Unix systems,
 providing support for cross-platform file sharing with Microsoft Windows, OS X,
 and other Unix systems. Samba can also function as a domain controller
 or member server in both NT4-style and Active Directory domains.
 .
 These packages contain snapshot versions of Samba 4, the next-generation
 version of Samba.
 .
 This package provides the winbindd daemon, which provides a
 service for the Name Service Switch capability that is present
 in most modern C libraries (like the GNU C Library - glibc.). Please
 note that the functionality of this version of winbind is behind on that
 of the winbind package.
 .
 The service provided by winbindd is called `winbind' and
 can be used to resolve user and group information from a
 Windows NT server. The service can also provide authentication
 services via an associated PAM module.