Thank you for your answers. Free.fr is the first general public ISP in France to provide IPV6 to its customers (it seems that I would be lucky) :)
Marc is right, with a /64 I cannot do anything, my ISP seems to be skinflint (/64 or nothing). A /48 should be better especially to be routed (in my dreams with Free.fr). Johan has ideas, but they are difficult (only the last one) to understand and to set up. Claudio's solution seems to be realizable. I will test it on the occasion. Thank you for all the work which you complete for the Openbsd project. Julien
