Thanks for following up. I wrote the code that performs that check, but unfortunately I don't have access to all of the permutations of Windows that are out there, so my ability to test is rather limited. I'm sorry for the trouble it caused you. Perhaps Vista Home Basic doesn't have IPv6 support? If that conjecture is true, I'm not sure how I'd have found it out :-( More likely, the name mangling is going wrong.

As for your point that the network package exhibits different APIs depending on the underlying system, that's true, but it's hard to avoid. Writing a compatibility API for systems that don't have functioning IPv6 APIs is a chunk of boring work, and I had thought that such systems were rare.

Anyway, please do file a bug, and we'll take the discussion of how to reproduce and fix your problem there.

Thanks,
Bryan.