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Introduction
Due to the practical difficulties in obtaining
“large” blocks of new, unassigned IPv4 addresses, major
organizations in the fast-growing markets of Asia
and Europe, as well as mobile service providers worldwide, are
under increasing pressure to migrate from the entrenched IPv4 standard to
the emerging IPv6 one. As we continue to see increasing global-scale
deployments of IPv6 networks, there has also been an increasing interest in
measuring the performance of these IPv6 networks [1]-[7].
In this work, we want to characterize, from an end-user's
perspective, the differences in actual networking performance as one
switches from IPv4 to IPv6. Towards this end, we have conducted extensive
measurements by sending probing traffic and initiating file downloads from
our dual-stack IPv6/IPv4 testbed to over 2,000 dual-stack hosts worldwide.
Our study follows the comparative approach of [1],
[5] but considerably broaden the scope of the previous
studies by covering more than 2000 dual-stack end-hosts worldwide. In addition,
by comparing our results with previously published results, we can quantify
the maturation of IPv6 in the past few years from a deployment and
performance-enhancement perspective. In our work, we measure the network
performance of IPv6 networks in terms of various network metrics like
network connectivity, hop count, RTT, throughput, operating systems
dependencies as well as the IPv6 address configuration latency. We also
study the network performance of three major IPv6 tunnel brokers and compare
them to native IPv6 services.
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