Although I think it's practically infeasible to scan the entire IPv6 range, it is possible to see who's on v6 through other methods, like when Shodan added a bu

Although I think it's practically infeasible to scan the entire IPv6 range, it is possible to see who's on v6 through other methods, like when Shodan added a bunch of its servers to the NTP pool to find v6 users. http://arstechnica.com/security/2016/02/using-ipv6-with-linux-youve-likely-been-visited-by-shodan-and-other-scanners/ http://arstechnica.com/security/2016/02/using-ipv6-with-linu...