kerphi@p-gully:~$ ll /sbin/mount.cifs -rwxr-xr-x 1 root root 30692 mars 9 11:28 /sbin/mount.cifs
sudo chmod a+s /sbin/mount.cifs
kerphi@p-gully:~$ ll /sbin/mount.cifs -rwsr-sr-x 1 root root 30692 mars 9 11:28 /sbin/mount.cifs