MAC4              240 drivers/net/ethernet/realtek/r8169_main.c 	MAC4		= 4,
MAC4               83 drivers/staging/rtl8192e/rtl8192e/r8192E_hw.h 	MAC4			= 0x004,
MAC4               69 drivers/staging/rtl8192u/r8192U_hw.h 	MAC4			= 0x004,