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USENIX Annual Technical Conference (NO 98), 1998
Abstract
The Design and Implementation of an IPv6/IPv4 Network Address and Protocol Translator
Marc E. Fiuczynski, Vincent K. Lam, and Brian N. Bershad
University of Washington
Abstract
IPv6 is a new version of the internetworking protocol designed to
address the scalability and service shortcomings of the current standard, IPv4.
Unfortunately, IPv4 and IPv6 are not directly compatible, so programs and systems designed
to one standard can not communicate with those designed to the other. IPv4 systems,
however, are ubiquitous and are not about to go away "over
night" as the IPv6 systems are rolled in. Consequently, it is necessary to develop
smooth transition mechanisms that enable applications to continue working while the
network is being upgraded. In this paper we present the design and implementation of a
transparent transition service that translates packet headers as they cross between IPv4
and IPv6 networks. While several such transition mechanisms have been proposed, ours is
the first actual implementation. As a result, we are able to demonstrate and measure a
working system, and report on the complexities involved in building and deploying such a
system.
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