MAC address in HPS -> could be set any?

Hi All,

1) Can I define any MAC address in the HPS? Honestly it looks for me very strange because as far as I know, the MAC address is some unique number and I cannot define just as I want (even I give to its a compatible MAC address format - the same number of digits and so on)... Should not I need to purchase the MAC address or receive any permission from some organization (let's say from IEEE or ITU or etc) to use some specific MAC address.

2) The HPS has two EMACs, so can I give two different MAC addresses to the same device?

Thank you!