Empirical Performance of IPv6 vs. IPv4

 under a Dual-Stack Environment





 Measurement Setup

 Dual-Stack List


 Hop Count



 OS Dependence

 IPv6 Address


 IPv6 Tunnel




 Internal Access



In this test, we used ping and ping6 to investigate the connectivity of IPv6, as compared to IPv4. Table II shows the average percentage of the 2014 sites that are reachable by IPv6/IPv4 during our tests. The results show that over 90% of the sites are reachable by both IPv6 and IPv4, with the IPv6 tests achieving more than 95% connectivity to the dual-stack sites. This represents a vast improvement compared to previous results ([1], [5]) where only 68.6% and 66.0% of the dual-stack sites could be reached via IPv6, indicating that the availability and stability of IPv6 has been increasing. The results also show that the connectivity figures during weekday and weekend tests do not show significant differences. Therefore, in the rest of this study, the results are averaged over all the tests, instead of being separated into weekday and weekend results.

Table II. Connectivity Test Results (out of 2014 sites)


Native IPv6

Native IPv4