Peter B. Juul wrote but the active guidelines - specifically the demand for three peers in the default-free zone, a demand that can't be met for political and economical reasons - made this impossible.

There is no such thing as a default-free zone for IPv6 anyway. Not in the v4 sense, and there is no definition for IPv6 DFZ. I presented this at the 6bone meeting in Minneapolis, might want to have a look at it. http://arneill-py.sacramento.ca.us/ipv6mh/ietf53.ppt

Francis Dupont wrote => sub-TLAs are for ISPs, not for NRENs. The solution for a NREN is either to disguise itself as an ISP,

Which is really easy to do. When you look at the requirements, you can even meet the 200 /48s assigned to end-users quickly, just get all your local linux chapter buddies and some of your co-workers and students and voila, you have 200 users and now you are an ISP. As far as I know, there is no requirement for the links to be native v6, so tunnels would work fine. Gee, you don't have to be a NREN, you can even get that for your home. </sarcasm>

or to join the 6bone.

Or both. There are some experiments that you could run over 6bone address space and don't want your "production" v6 network to be affected. Michel.