A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : The Impact of Site-Local Addressing in Internet
Protocol, Version 6 (IPv6)
Author(s) : M. Wasserman
Filename : draft-wasserman-ipv6-sl-impact-01.txt
Pages : 26
Date : 2003-1-7
Internet Protocol, Version 6 (IPv6) introduces a scoped unicast
addressing architecture, including the concept of site-local
addressing. Although site-local addresses were originally defined
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 the borders of their originating
site. 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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