Steve, it was a pleasure meeting you and your staff at Cisco Live in Milan last week. As you said, our App Suite Mida eFramework interfaces with Cisco UCM and it has a built-in dual IP stack supporting IPv4 and IPv6. IPv6 avoids the expensive use of VLAN and increases UC application security as well! If you are interested in, try our suite for free! Contact us at press@midasolutions.com to discover more!