[Samba] net rpc rights stop working at 3.4.3

[Frank Bonnet]

Hello

Since I upgraded from 3.3.9 to 3.4.3 the net rpc rights command
stops working properly

pdc:/usr/local/samba/etc/samba# net rpc rights list
Enter root's password:xxx
Could not connect to server 127.0.0.1
Connection failed: NT_STATUS_CONNECTION_REFUSED

the smb.conf file is exactly the same one

Some new features in 3.4.3 to add in smb.conf ?

Thanks