Dataset is type Unix (share type), NFS V4 was checked but I test with NFS V3,
share was mounted with/without acl options too....
I tested with and without maproot/mapall, changed permision type to windows, also I test security with and without sys. ;-) Full permutation.
Can you give me plain hint how I should configure FreeNas and Unix client to use setfacl with sucess, please, please.