THC-ipv6 Toolkit is a complete tool set to attack the inherent protocol weaknesses of IPV6 and ICMP6. The toolkit includes an easy to use packet factory library. Please note to get full access to all the available tools you need to develop tools yourself or submit patches, tools and feedback to the thc-IPv6 project. The tools included include an effective alive scanng, which will detect all systems listening to this address, and a tool by willdamn@gmail.com generates neighbor solicitation requests with a lot of CGAs.
Source: https://thehackernews.com/2011/08/thc-ipv6-toolkit-attacking-ipv6.html