MAC address in virtual machines

Hi,Everybody,

I am working small project to get hardware ID of computer  by c language ( CPUID instruction  ....) .

When coding run in physical machine  is  not problem . But  when I copy virtual machines , result  create  the same  hardware ID .

I have been  solution by   combineUUID   into the Hardware ID  that Hardware ID  between virtual machines  is different .

But in the case of VMware   , when  virtual machines are  copied , I select Moved  (I moved  It, I copied , cancel  )  .

if  you select Moved , result  is  same MAC address .=> UUID is identical

how do I get  hardware ID in virtual machines  ?