Seperate hardware address on virtual interface
 

I've searched on how to do a virtual interface under linux.
I'm using for example eth0:1
so ifconfig eth0:1 192.168.0.20 netmask 255.255.255.0 for example.

However if i do eth0:1 hw ether 00:11:22:33:44:55
It changes eth0 as well.

Where should i look into for creating a separate virtual interface that's simply bridged with one of the existing interfaces that has a separate ip and hw address that the os handles.

I have only read about this, but it sounds like what you describe.

http://sourceforge.net/projects/multimac/