When I do
sudo smbclient -A /etc/creds/srv-distri -gL 188.8.131.52
where 184.108.40.206 is some random ip with no samba at all, the smbclient process uses 100% cpu until it timesout. It is normal that it times out but it shouldn't use all these cpu cycles.
samba-4.4.5-1.fc24.x86_64 on fedora 24
*** This bug has been marked as a duplicate of bug 12105 ***