>>> The problem being tackled isn't completely clearly defined, but the >>> general philopshy is that multicast is not being deployed because most >>> potential receivers are using ISPs that don't supply multicast >>> service. The proposal is that we need some form of auto-tunnelling >>> protocol which would allow a receiver to request unicast tunnelling of >>> multgicast traffic from a replicator somewhere on the >>> multicast-capable internet. Such proposals have come up repeatedly >>> over the last ten years. >> >>there is a serious contest to see how many mechanisms multicast >>and v6 can develop to overcome why they are not being deployed. >>they should get a clue. Look at how many mechanisms NAT required before it was deployable. Ease of deployment != good -Kevin