Has anyone joined a Samba 3.6.x server to a Samba 4.0.x domain controller?

[steve]

> 'wbinfo -g' works fine. 'wbinfo -u' and 'getent passwd' also. Only
> 'getent group' shows only the local users.
3.6.12
getent group
Local groups only

getent group <name of group>
returns correctly

If you need the getent group for you scripts (as we do), you can use
nss-ldapd or sssd instead of winbind.
Cheers,
Steve