Does the Windows firewall protect you from all incoming traffic? Not if it's IPv6! While it's not much of a threat today, I can easily see it turning into one tomorrow. Their solution: "To work around this behavior, obtain firewall software that can filter and block IPv6 traffic." How come nobody warned me about this? Why isn't the tech press all over this serious oversight?! And, most importantly, when (if ever) will a patch be issued to bring the software up-to-date? Seriously, you might wanna tell your friends about this "little" technicality. Ten to one says Microsoft will never share this bit of news with the world. Of course, until the first exploit is unleashed. By then, it'll be two seconds too late.
Commentary from: Lockergnome

Here is the article for the Microsoft Knowledgebase article.

Microsoft Knowledgebase