>It doesn't solve the problem of an enterprise with more than one >location/network-interconnect... we can go around this rose bush again and >again and again, but honestly, deployment of v6 happens for real when there >is a significant business reason to deploy it, and when the real concerns of >enterprises today are actually addressed.
Indeed, and the IETF's answer for multi-homing (SHIM6) is a non-starter for the majority of those interested in doing so. Enter PI space, now available from (most of) your local RIR(s). Yes, also enter DFZ growth ...