>> would be interested to know what people think >> is good about tunnels as an IPv6 transition technology, and what people >> think is bad about tunnels. > The good thing about tunnels is people can build them where there's no > proper network > > The bad thing about tunnels is people build them instead of a > proper network > > brandon > We've used an HE tunnel with BGP for about a year and it has not been reliable enough for my tastes. However, I think it's great for testing - I just wouldn't want to rely on it for production. One, it's not ideal to force traffic over a tunnel that incurs additional processing, latency, and reliability problems. Second, in the case of a free HE tunnel, it might be viewed as impolite to send the tunnel provider lots of data (I don't remember seeing a bandwidth usage policy).
Only in the case where local peers refuse to provide reliable IP6 transit would I consider using a tunnel full time for IP6 traffic. And even then, probably only if I was paying and had some sort of service guarantees and support from the tunnel provider. I would look at switching local peers for transit before relying on a tunnel. --Blake
