US Patent 8448171 Communications between virtual machines that have been migrated

A method, apparatus, and computer program product for managing communications between a plurality of applications are presented. A determination is made as to whether an address in a message is a prior address for a second application in the plurality of applications in response to receiving a message from a first application in the plurality of applications. The message is sent onto a virtual network configured to handle prior addresses for the plurality of applications in response to the address in the message being the prior address for the second application being located on another virtual machine from the first application.