On 18/11/2016 05:28, Jari Arkko wrote: ... > But again, these are just my ideas. What do people want that we do? Speaking for one person only, I do not believe that an IPv6-only network with NAT64 to reach legacy services is a desirable end point, because it includes *unnecessary* NAT breakage. A desirable end-point is a dual stack network (with non-RFC1918 IPv4), where the amount of IPv4 traffic is very small, tending towards zero. That includes no NAT breakage. So I see no argument for changing the current default SSID setup. (We already have millions of testbeds for the intermediate setup of a dual-stack network with RFC1918 IPv4; I write this message from one of those, and it works fine, except for NAT breakage.) Brian