Multiple 82574L Initialize failures

According to the spec update multiple 82574L controllers have an SMBus address conflict.

" 7. SMBus ARP Fails with Multiple Devices Because Different UDIDs Collide "

I'm guessing this is the reason that I can no longer access the control/status registers of either of my Ethernet controllers. I'd like to assign the address manually per the spec update but I cannot access the control registers. Every time I try I get the following error:

Port Network Address Location Series  WOL Flash Firmware Version

==== =============== ======== ======= === ================

  1   (Cannot initialize adapter)

  2   (Cannot initialize adapter)

Any suggestions on how to disable ARP when the adapter won't initialize?

Thanks!