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Title : The Impact of Site-Local Addressing in IPv6
Author(s) : M. Wasserman
Filename : draft-wasserman-ipv6-sl-impact-00.txt
Pages : 0
Date : 2002-12-18
Internet Protocol version 6 (IPv6) introduces a scoped unicast
addressing architecture, including the concept of site-local
addressing. Although site-local addresses were originally
allocated for use in networks that were not yet connected to the
Internet, there has been work underway for several years to expand
the use of site-local addresses to globally connected IPv6 networks
and nodes.
The use of site-local addresses on globally connected networks and
nodes raises complex technical issues for many parts of the TCP/IP
protocol suite. Many of these issues are caused by the fact that
IPv6 sites are private address spaces, and site-local addresses are
unreachable or ambiguous outside of site boundaries. Site-local
addresses also add significant complexity at the IP layer and at
other layers of the protocol stack. In addition, many of the
benefits of site-local addressing can be achieved using mechanisms
that are significantly less complex and that cause fewer problems
than IPv6 site-local addressing.
This document makes a recommendation to limit the use of site-local
addresses to isolated, single-site networks, and offers suggestions
for less complicated mechanisms to achieve many of the benefits
currently attributed to IPv6 site-local addressing.
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