The code for implementing the winbindd side of function needed by getent passwd is incomplete.
Created attachment 5220 [details] Content of my nsswitch.conf file
Using "unitary" command works quite ok: mat@ares:/usr/local/src/samba4/source4$ id Guest uid=3000000(Guest) gid=3000001(Domain Guests) groupes=3000001(Domain Guests) but trying to list the entire password table do not work: mat@ares:/usr/local/src/samba4/source4$ getent passwd | grep -i Gu mat@ares:/usr/local/src/samba4/source4$ Although we should have from a fresh provision: Administrator and Guest at least.
Fixed by commit b792e5575c8dcd1ec4f5a572561a48ea5744000c. Thanks to ekacnet for his wonderful patch.