How to disable IPv6 stateless autoconfig on Windows 7

For some reason, even if you statically assign an IPv6 address and gateway in Windows 7, it will still do SLAAC anyway and give itself a second auto generated address.  Here’s how to turn that off:

  1. Start an administrator shell; i.e. right click Command Prompt and select the Run as Administrator… option.
  2. The following is all one line:
    netsh interface ipv6 set interface "Local Area Connection" routerdiscovery=disabled

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