Those of you who read the “What’s new in Networking in vSphere 4.1” would have noticed that vSphere 4.1 is currently undergoing IPv6 conformance testing for the NIST Host Profile. (a little bit of recent history: the IPv6-ready program under the US JITC and US DoD was cancelled and replaced by the US NIST/USGv6 Conformance program).
Anyway, vSphere 4.1 is now listed on the UNH site for USGv6. UNH still have to finish up some of the final tests, and we still have to prepare our SDOC (Supplier Declaration of Conformance). You can see the current state of UNH USGv6 testing at http://www.iol.unh.edu/services/testing/ipv6/usgv6tested.php