Comment 9 for bug 551847

Just for reference, http://forum.eucalyptus.com/forum/multiple-network-interface-configuration discusses multiple network interfaces in a eucalyptus instance. So, simple blacklisting there would possibly, though unlikely could lead to inconsistent naming (kernel change isn't going to occur in Eucalyptus and the kernel driver woudl be the same for both devices).

I was previously unaware of this. Its something that will need to be addressed. The current cloud-init expects that