[jlintz]

interesting, I can't find anything that supports this. Do you have a link to a doc?

edit: or are you referring to using ENIs?

[falcolas]

Sure, here you go. Basically, you can set up a private subnet, from which you can use any IP.

http://aws.amazon.com/articles/2127188135977316

[tgeek]

This isn't ARP per se as one would traditionally expect it. This is the networking in VPC handling the movement of the ENI.

[wmf]

It looks like this is using APIs not ARP to move the IP address; am I wrong?

[mh-]

that's correct as far as I understand the capabilities in VPC.