Wow, checking the Hurricane Electric site (my ipv6 broker) I noticed they have a certification program to express one’s knowledge on ipv6.
I managed to go from enthusiast > administrator > professional up to Guru. The last one will be a no-go, as my TLD provider doesn’t support ipv6 Glue records.. too bad.
Anyway.. I didn’t have to do that much on this subject, which proves I had it configured quite right already. Still, one can be surprised how many small errors slip through, which makes this certification quite thorough.