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URL: http://www.ietf.org/rfc/rfc3053.txt
The
IPv6 global Internet as of today uses a lot of tunnels over the existing IPv4
infrastructure. Those tunnels are difficult to configure and maintain in a
large scale environment. The 6bone has proven that large sites and Internet
Service Providers (ISPs) can do it, but this process is too complex for the
isolated end user who already has an IPv4 connection and would like to enter
the IPv6 world. The motivation for the development of the tunnel broker model
is to help early IPv6 adopters to hook up to an existing IPv6 network (e.g.,
the 6bone) and to get stable, permanent IPv6 addresses
and DNS names. The concept of the tunnel broker was first presented at
Orlando's IETF in December 1998. Two implementations were demonstrated during
the Grenoble IPng & NGtrans interim meeting in February 1999.
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