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  1. #1
    Jun 2011

    Intel BIOS forgets the MAC address

    I have an Intel D945GCLF2 mobo with the 330 dual Atom CPU.

    last couple three times it was rebooted (Fedora Linux), it failed to start the networking for eth0 because it doesn't match the MAC address with what is
    setup in /etc/sysconfig/network-scripts/ifcfg-eth0. It reports the MAC as
    either one of 0F:FF:FF:FF:FF:FF or else FF:FF:FF:FF:FF:FF. when the real MAC address should be 00:1C:C0:B4:F2:FB.

    I can get by this issue by simply typing manual command:

    ifconfig eth0 hw ether 00:1C:C0:B4:F2:FB

    then retrying the networking with service network restart

    But, I want to fix the issue permanently so that if the box restarts unexpectedly, and it is unattended, it will start properly with networking.

    Could the problem be the onboard battery? Does it typically "forget" its MAC when the battery dies?

  2. #2
    Aug 2004

    Re: Intel BIOS forgets the MAC address

    Check the setings in the bios to see if it needs to be set to detect, auto etc.

    A dead battery will lose the time, so if that's not happening then the battery is working.

    "The significant problems we face cannot be solved at the same level of thinking we were at when we created them."
    - Albert Einstein (1879-1955)

  3. #3
    Nov 2001

    Re: Intel BIOS forgets the MAC address

    How up to date is your bios ?
    Check your bios version, I see some fixes regarding mac (though may not be your problem) in earlier bios.

    BIOS Version 0095
     Updated Realtek* PXE ROM for 8111C Gigabit LAN support.
     Fixed BIOS setup page showing wrong LAN MAC address.

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