SEcure Neighbor Discovery (SEND), RFC 3972, is yet not supported in Windows XP/Vista/7. This means that the majority of hosts are not secured by SEND since the Windows family of operating systems is the most popular, accounting for more than 80% of the user-base compared to the other operating systems. This deficiency leaves IPv6 local networks vulnerable to many types of attacks and consequently will lead to a limited deployment of IPv6.
In order to address this problem, we have implemented a version SEND for use with the Windows Family (WinSEND) of operating systems. This implementation makes use of information contained in both RFC 3972,"Cryptographically Generated Addresses (CGA)", and RFC 3971, "SEcure Neighbor Discovery (SEND)". Because RFCs usually only specify what is to be implemented, rather than how to implement it, we have make major efforts with both the architecture and engineering phases of the development to make this implementation as seamless as possible. In this way we hope to have achieved a solid implementation of SEND for Windows which will finally help to unleash the complete deployment of IPv6.