Abstract: Given that little research has been conducted on IPv6, IPv6 network topology characteristics were analyzed using large amounts of data collected from the CAIDA project via authorized channels between January 2008 and April 2010. The IPv6 network topology showed greater consistency in numbers of nodes and connections, a trend for greater fluctuation, greater stability of means without much vibration, an overall trend of improvement, maximum values trending higher with greater fluctuation, and clustering coefficients with an upward trend in vibration. From the bit level of the Internet's evolution maturity coefficient, it can be seen that development of the IPv6 network lags far behind that of the 2008 IPv4 network even as late as April 2010.