You want to run a load test by using a test controller and test agents in Microsoft Visual Studio 2010.
You configure the test agents to enable IP switching.
You run the test.
In this scenario, the IP address of a single virtual user may change during a test.
Note The IP address changes are visible in the Internet Information Services logs.
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.
To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft website:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
To apply this hotfix, you must have Visual Studio 2010 SP1 installed.
You do not have to restart the computer after you install the hotfix if the affected files are not being used. We recommend that you close all Visual Studio 2010-related components before you install the hotfix.
The global version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.