I've already experienced some of this.. World of Warcraft had an issue a month or so ago whereby their servers got hit by an IPv4 only DDoS attack that prevente

I've already experienced some of this.. World of Warcraft had an issue a month or so ago whereby their servers got hit by an IPv4 only DDoS attack that prevented people from playing. My ISP had native IPv6 and I was unaffected as a result.