I just spent half and hour wondering why I couldn't log into a share via smbclient from one xterm session, when it worked fine from another.
On one I did "smbclient //server/share/" - and triggered NT_STATUS_BAD_NETWORK_NAME
the other I did "smbclient //server/share" and it worked
Could you possibly think to remove slashes from the end of sharenames so fools like me can carry on with their bad habits? :-) [I don't think it should have any negative side effects?]
this was fixed in the meantime, works with 4.13.