[Samba] Erro Join new DC

[Carlos]

HI!!

For information only:

In my tests:
Samba 4 version 7.X or 8.x
Dont join in same version or after, only necessary join with versio 6.X, 
and after upgrade..

Exemple:

Samba 4 7.7 DC:

New
Join new DC with samba 4 6.X -> OK

New
Join new DC with samba 4 7.X -> Erro

New
Join new DC with samba 4 8.X -> Erro


Samba 4 8.X DC:

New
Join new DC with samba 4 6.X -> OK


New
Join new DC with samba 4 7.X -> Erro

New
Join new DC with samba 4 8.X -> Erro


Is correct ?

Regards;