With the introduction of network virtualization, inter-VM traffic is sent through an internal software switch without being sent through the physical network infrastructure. This process aids organizations that have networking policies that require all network traffic to be routed through an external network so that access control lists (ACL), packet monitoring, and the like can be configured on the external switch. In this release, you can enable reflective relay to ensure that this inter-VM traffic is also subjected to these same policies.
For more information, see Reflective Relay in Managing Network Virtualization and Network Resources in Oracle Solaris 11.2 .