Does not compute! MAC is a hardware address "permanently burned-in" by the
manufacturer. If Windows detects two identical MACS a system event log
entry is generated and network connectivity cease.

Following also quoted from Knowledge Database Article ID 164903: "Another
source of duplicate media access control addresses can occur if you are
assigning locally administered media access control addresses (LAA), in
which case you are overriding the burned-in address in favor of the locally
assigned media access control address. With some drivers, LAA media access
control addresses are possible, usually Token Ring adapter drivers."


"Jette Goldie" <bosslady@scotlandmail.com> wrote in message
news:1vn85ksiuz92m.16q1rgqxl8v3e$.dlg@40tude.net.. .
>I have two working PCs with the same MAC address!
> How do the packets figure out which computer to go to?
>
> I have been travelling with two computers for weeks now staying at some
> German hotels whose wireless ISP sync with the MAC address of the wireless
> cards on my computers so I used MacMakeUp to make both computers have the
> same MAC address as I get my home email on my home PC and I get my work
> email on my work PC. Up until today, I was careful to boot only one
> computer at a time.
>
> I'm currently in a hotel in the UK which has free wireless to any MAC
> address and I forgot to reset the MAC address on the second PC back to the
> original. Both computers seem to be working wirelessly.
>
> How can that be?
>
> How can I have two working PCs with the same MAC address?
> Why don't the packets get confused as to which computer to go to?
>
> Jette