RRAS Service fails to start. EventID 7024 and 20103

When you install RRAS on 2008 r2 server with IPv6 disabled inregistry (disabled components) RRAS likely will fail to start. My error message was EventID 7024

The Routing and Remote Access service terminated with service-specific error 31 (0x1F).

EventID 20103

Unable to load C:WindowsSystem32iprtrmgr.dll.

What you need to do is: Remove following key HKEY_LOCAL_MACHINESystemcurrentcontrolsetservicesremoteaccessroutermanagersIPV6

Remove that, and try to start the service. Voila!