Not sure I understood the question but yes you can have as many IPs as you want on the same nic.
It's been a while since I have done it but you just add virtual nics and they look like this:
Eth0:0
Eth0:1
Eth0:2
Etc.
Each one has its own Mac and can operate independently on the network. They can all be static IPs or dhcp.
They can even be on different vlans.