I use "e1000" NIC in virtual guest, and the driver in the guest has disable LPE(write "~E1000_RCTL_LPE" to "E1000_RCTL" register of e1000 NIC). But the virtual NIC still forward big frame(bigger than MTU set to the driver) to the driver. And in the file "hw/e1000.c", I don't say any codes that handle flag "E1000_RCTL_LPE". So the virtual NIC doesn's support this feature? If so, can we add it?