Multiple MACs on a single NIC

[chicks@xxxxxxxxxx]

We're dealing with a stupid cable company in KY that won't assign extra 
IP's with each IP having it's own MAC.  Ultimately the machines are going 
to be sitting behind a FC2 firewall, but we need to get the IP's somehow. 
One solution would be to drop 5 NIC's in a box, but that seems pretty 
stupid to me.  Is there any way to have a single NIC respond to more than 
1 MAC address?

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</chris>