On Fri, 19 Mar 2004, Tony Hain wrote:6to4 - Enterprise -> allows multiple subnet deployments behind the tunnel endpoint with a public IPv4 address.
I don't think any serious enterprise would want to do anything as unreliable as 6to4. Just get a configured tunnel w/ prefix delegation or native access.
I'd like to think of the company I work for as being serious. We are using 6to4. Not in the way you think, but we are still using it very seriously.