Solaris network virtualization and resource control can have more than one VNIC which operates as a physical NIC, it also has a MAC address.
A physical interface can have more than one VNIC. Each VNIC operates like and appears to the system as a physical NIC. The individual VNIC is assigned a media access control address (MAC address), which can be configured to a value other than the default MAC address assigned to the physical NIC. 
