Problems with interfaces on Sun Ultra 5

[Vladimir R <vlary@mail.ru>]

Hello all,
after install Lenny on  Sun Ultra 5,
I succesfully setup network on first interface, eth0,
with local network address, and it works well.
Then I want to setup eth1 to external addresses,
but found, that I have no eth1, but have eth1_rename,
with same MAC address as eth0.
I want to have eth1 interface with diffrent MAC.
I saw posts in this list with exact problem,
but no solution was given.
I tried to modify /etc/udev/rules.d/70-persistent-net.rules,
 /etc/network/interfaces, but it does not helped.