Oh yes, works perfectly :D
Can connect to my SMB server using SMBv2.1
For future reference, I use this command:
su --mount-master -c mount -t cifs -o rw,username=user,password=pass,iocharset=utf8,file_mode=0666,dir_mode=0777,noperm,vers=2.1 //ip/share /mnt/cifs/share
Thank you for your fast...