Test here: http://ipv6-test.com/
My results using Firefox 47.0.1:
Looks like I'm good-to-go. My ISP doesn't assign IPV6 reverse DNS records yet.
Things that MS needs to fix:
Decrease MS Egde fallback time to IPV4.
Things that MS has fixed:
Windows 10 Home - ICMP filtering issue has been fixed with a recent update (might have been the Anniversay update).
Edited by KB0, 12 August 2016 - 05:12 AM.