I'm failing to get past the enthusiast test; verifying that my web server is serving OK on ipv6. Whenever I click the test button, I immediately get the error message "Could not grab the file via IPv6 HTTP". I verified with wireshark that the he.net server is returning this message in reponse to the AJAX request, so it's no a local problem.
The URL in question is http://www.wwwdotorg.org/sxywqw332y.txt
I've verified that URL works, using another ipv6-capable machine and "wget -6". A traceroute6 on a different ipv6-capable machine that gets its connectivity through an he.net tunnel works.
Any clues what could be wrong? Thanks.