Unusual Evolution of IPv6 Internet Topology

The evolution of Internet topology is not always smooth but sometimes with unusual sudden changes. Consequently, identifying certain patterns of the unusual topology evolution is critical for Internet topology modeling and simulation. We analyze IPv6 Internet topology evolution in IP-level graph to demonstrate how it changes in uncommon ways to restructure Internet. After evaluating changes of average degree, average path length and some other metrics over time, we find that in the case of a large-scale growing the Internet becomes more robustness; whereas in a link redistribution the Internet becomes more efficient with links largely decreased.