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Title

Investigating the IPv6 Teredo tunnelling capability and performance of internet clients

Author(s)

Zander, Sebastian;  Andrew, Lachlan L. H.;  Armitage, Grenville;  Huston, Geoff;  Michaelson, George

Abstract

The Teredo auto-tunnelling protocol allows IPv6 hosts behind IPv4 NATs to communicate with other IPv6 hosts. It is enabled by default on Windows Vista and Windows 7. But Windows clients are self-constrained: if their only IPv6 access is Teredo, they are unable to resolve host names to IPv6 addresses. We use web-based measurements to investigate the (latent) Teredo capability of Internet clients, and the delay introduced by Teredo. We compare this with native IPv6 and 6to4 tunnelling capability and delay. We find that only 6-7% of connections are from fully IPv6-capable clients, but an additional 15-16% of connections are from clients that would be IPv6-capable if Windows Teredo was not constrained. However, Teredo increases the median latency to fetch objects by 1-1.5 seconds compared to IPv4 or native IPv6, even with an optimally located Teredo relay. Furthermore, in many cases Teredo fails to establish a tunnel.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Advanced Internet Architectures

Source

Computer Communication Review, Vol. 42, no. 5 (Oct 2012), pp. 13-20

Publication year

2012

FOR Code(s)

0803 Computer Software;  0805 Distributed Computing;  1005 Communications Technologies

Keyword(s)

Capability;  IPv6;  Performance;  Teredo tunnelling

Publisher

ACM

ISSN

0146-4833

Publisher URL

http://dx.doi.org/10.1145/2378956.2378959

Copyright

Copyright © ACM, 2012. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in Computer Communication Review, Vol. 42, no. 5 (2012) http://doi.acm.org/10.1145/2378956.2378959.

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