Skip to Content
[CAIDA - Center for Applied Internet Data Analysis logo]
Center for Applied Internet Data Analysis
Identifying IPv6 Network Problems in the Dual-Stack World
K. Cho, M. Luckie, and B. Huffaker, "Identifying IPv6 Network Problems in the Dual-Stack World", in ACM SIGCOMM Network Troubleshooting Workshop, Sep 2004, pp. 283--288.
|   View full paper:    PDF    gzipped postscript    |  Citation:    BibTeX   |

Identifying IPv6 Network Problems in the Dual-Stack World

Kenjiro Cho3, 5
Matthew Luckie1, 2, 4
Bradley Huffaker1

CAIDA, San Diego Supercomputer Center, University of California San Diego


National Laboratory for Applied Network Research - NLANR, San Diego Supercomputer Center, University of California, San Diego


Sony Computer Science Labs, Inc.


University of Waikato


WIDE Project

One of the major hurdles limiting IPv6 adoption is the existence of poorly managed experimental IPv6 sites that negatively affect the perceived quality of the IPv6 Internet. To assist network operators in improving IPv6 networks, we are exploring methods to identify wide-area IPv6 network problems. Our approach makes use of parallel IPv4 and IPv6 connectivity to dual-stacked nodes.

We identify the existence of an IPv6 path problem by comparing IPv6 delay measurements to IPv4 delay measurements. Our test results indicate that the majority of IPv6 paths have delay characteristics comparable to those of IPv4, although a small number of paths exhibit a much larger delay with IPv6. Thus, we hope to improve the quality of the IPv6 Internet by identifying the worst set of problems.

Our methodology is simple. We create a list of systems with IPv6 and IPv4 addresses in actual use by monitoring DNS messages. We then measure delay to each address in order to select a few systems per site based on their IPv6:IPv4 response-time ratios. Finally, we run traceroute with Path MTU discovery to the selected systems and then visualize the results for comparative path analysis. This paper presents the tools used to support this study, and the results of our measurements conducted from two locations in Japan and one in Spain.

Keywords: dns, ipv6, measurement methodology
  Last Modified: Tue Oct-13-2020 22:21:51 UTC
  Page URL: