Create a virtual network interface using the iproute2 "ip link" command with a spoofed MAC address
Have you tried...
ip link add type veth addr 00:01:02:aa:bb:cc
or
ip link set dev veth0 addr 00:01:02:aa:bb:cc
Have you tried...
ip link add type veth addr 00:01:02:aa:bb:cc
or
ip link set dev veth0 addr 00:01:02:aa:bb:cc