> Is there any way to change the MAC address of a machine? IP address is
>> assigned by ISP. My understanding is that IP address is based on the
>> MAC address of a machine, is that correct concept?
> No. Your IP address has nothing whatsoever to do with your MAC
> address.
If you're using DHCP, an IP address X is assigned to the card with MAC address Y and changing the MAC then renewing your lease is almost guaranteed to change your IP address. If the DHCP server is set to assign a static address to your computer, it does so by associating the static address with the MAC address.
Your ISP assigns it from their pool of available addresses.
> On my tiny network, when someone plugs in a new computer, it just
> assigns the lowest numbered unused IP address.
Yes, but while you have that address it IS associated with your MAC address. I think we're discussing two different OSI layers, though.
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