Posted 18 October 2010 - 09:38 AM
I have a user with a Asus Laptop that seems to generate it's own Ethernet (Wired) MAC Address each time that it boots. The adapter that is used is in the form of "Ethernet Adapter Local Area Connection #5". Each time the computer boots I see a black screen, which appears to be generated by the Intel Atheros card, that displays the MAC Address. Upon entering Windows Vista, I run a ipconfig /all which shows the "Ethernet Adapter..." as above except that the number changes on each boot - It increases by 1. (So the next time I boot the laptop, the name changes to "Ethernet Adapter Local Area Connection #6"
The last two MAC Addresses generated were:
DA:11:00:3B:10:00 and 22:CF:BE:46:10:00 which do not appear to even be registered to any company according to IEEE's MAC Lookup Database.
The network that we use requires the MAC Addresses be entered into a database to ensure that only authorized users are added, but with the MAC Address changing every time the machine boots, we can't get the system to accept the laptop. Any idea how to fix this "MAC generated on boot" problem?