Rated 2 out of 5 stars
Local IPv6 addresses are not detected (FF5, Win7/64 NL, native-ipv6). IPv6-Only sites show a blue  icon. IPv4/6 sites a brown icon.This review is for a previous version of the add-on (0.6.5).
Would you be willing to help me debug this issue? It would be helpful if you could as I haven't been able to reproduce the issue from the information in your post here. If so please do send me an email (email@example.com) and I'll do my best to get it fixed!