Microsoft Windows [Version 6.1.7000] (C) Copyright 2009 Microsoft Corp. C:\Windows>netsh interface ipv6 delete potentialrouter ?
Usage: delete potentialrouter [interface=][[address=]]
interface - Interface from which to delete the potential router.
address - Address of the potential router.
Remarks: Deletes a potential router from a given interface.
delete potentialrouter "Internet" fe80::1