Comment 281 for bug 263555

I could write the MAC address with ethtool but now the driver do not load completely insmod hangs for about a minute and then it disable the IRQ.
After this here is no eth1 this are the dmesg:
e1000e: Intel(R) PRO/1000 Network Driver - 0.2.0
e1000e: Copyright (c) 1999-2007 Intel Corporation.
ACPI: PCI Interrupt 0000:00:19.0[A] -> GSI 20 (level, low) -> IRQ 20
PCI: Setting latency timer of device 0000:00:19.0 to 64
ACPI: PCI interrupt for device 0000:00:19.0 disabled
e1000e: Intel(R) PRO/1000 Network Driver - 0.2.0
e1000e: Copyright (c) 1999-2007 Intel Corporation.
ACPI: PCI Interrupt 0000:00:19.0[A] -> GSI 20 (level, low) -> IRQ 20
PCI: Setting latency timer of device 0000:00:19.0 to 64
ACPI: PCI interrupt for device 0000:00:19.0 disabled

I think, now with a valid checksum it interprets some of the still 0xFF values as valid and set some registers wrong.