I was trying to diagnose some issues with ASP.NET Web Forms post backs so I turned off IPv6 even though none of my websites were bound to IPv6 addresses. I unchecked it on the adapter property page. I had no logical reason for doing this. Then Windows Update stopped working. This was from a Rackspace Cloud Server. I cannot imagine what kind of tunneling is taking place in various parts of the internet with IPv6 getting rolled out (finally).
Oh and by the way, I had trouble uploading this picture with BlogEngine.NET and I saw this article:
http://blogengine.codeplex.com/workitem/12382
I did what the user said (in settings unchecked optimize which minifies) and it solved the problem, however I am on IIS 8 not IIS Express.
Videos of the Blow Hole:
http://www.youtube.com/results?search_query=sunny%20cove%20blow%20hole&sm=3
What is my preferred IP anyway?
Not this:
Set-NetIPAddress -IPAddress xxx.xxx.xxx.xxx -SkipAsSource 1
You can do that in Power Shell on all the IP addresses you don't want to be chosen as your preferred IP address for your windows 2012 machine.
This will tell you what is set:
Netsh int ipv4 show ipaddresses level=verbose
I have read that once you start managing this with Power Shell you will lose information if you try and edit with the GUI.