The problem is they've changed the default dialect to SMB3 in mount.cifs. Originally it defaulted to SMB1. To get get the same behavior as Ubuntu 16.04 you add vers=1.0 to the mount options.
I have tracked the fix down .... it is in /root/network/Network/scripts/part2
change line 27 to :
Code: Select all
mount.cifs //$IP/"$Share" "$APPDIR"/mnt-point -o username=$Username,password=\$Password,file_mode=0775,dir_mode=0775,gid=$(awk -F: "/^users/ {print \$3}" /etc/group),noserverino,vers=1.0,nounix,sec=ntlm$IOCHARSET