These are mac entities....
mac_RX_DestMAC_Switch <mac_RX_DestMAC_Switch> mac_RX_SrcMAC_Filter <mac_RX_SrcMAC_Filter> mac_RX_Type_Switch <mac_RX_Type_Switch> mac_TX_SrcMAC_Prepender <mac_TX_SrcMAC_Prepender> mac_TX_DestMAC_Prepender <mac_TX_DestMAC_Prepender> mac_TX_Type_Prepender <mac_TX_Type_Prepender> mac_FrameLoopback <mac_FrameLoopback> mac_Wrapper <mac_Wrapper>