A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Router Advertisement based privacy extension in IPv6 autoconfiguration
Author(s) : Hosnieh Rafiee
Christoph Meinel
Filename : draft-rafiee-6man-ra-privacy-04.txt
Pages : 11
Date : 2013-06-18
Abstract:
Privacy is an important issue which concerns many governments and
users, with its importance becoming more evident every day. Nodes
change their IP addresses frequently in order to avoid being tracked
by attackers. The act of frequently changing IP addresses also helps
to prevent the leakage of information by nodes. In IPv6 networks
there is currently one solution for maintaining the privacy of nodes
when IPv6 StateLess Address AutoConfiguration (SLAAC) (RFC 4862) is
used. Unfortunately there are some problems associated with this
solution which entails the use of the Privacy Extension (RFC 4941).
One of the issues with this RFC concerns the wording that is used
which allows the implementation to make the choice as to what
approach to use and in so doing, in some cases, the choice made is
not the most prudent or best approach and this is not ideal and can
cause some problems. Some of these problems are concerned with not
generating a new Interface ID (IID) after changing the router prefix.
Another concern would be the fact that nodes may use an IID that was
generated based on a MAC address as a public address, and then use
this in their response. The act of cutting the current connections to
other nodes, if the max lifetime of the old IID has elapsed, is also
not clearly explained nor is whether or not the already used IID
should be kept in stable storage, There is also a concern about the
need to have stable storage available for the generation of a
randomized IID. The RFC gives no explanation as to how to make use of
CGA in its randomizing solution when stable storage is not available
or how to use the same approach for random value generation in all
implementations where there is a lack of stable storage. The purpose
of this document is to address these issues, to update the current
RFC and to introduce a new algorithm for the lifetime of IID.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-rafiee-6man-ra-privacy
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-rafiee-6man-ra-privacy-04
A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-rafiee-6man-ra-privacy-04
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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