[ipv6hackers] Fwd: RFC 8981 on Temporary Address Extensions for Stateless Address Autoconfiguration in IPv6

[Fernando Gont]

Folks,

RFC 8981, entitled "Temporary Address Extensions for Stateless Address 
Autoconfiguration in IPv6", has finally been published: 
https://www.rfc-editor.org/info/rfc8981

It has been the product of over four years of work.

It is revision of RFC4941 -- the so called "IPv6 temporary addresses", 
also known as "IPv6 Privacy Addresses".

This revision does a number of interesting things, including:

* It employs a different algorithms for generating the Interface 
Identifiers (IIDs)

* Addresses issues present in RFC4941, such as re-using the same 
interface identifier across different prefixes

* The lifetimes of temporary addresses are reduced, thus reducing the 
average number of addresses that may be in use at any given time.

* The lifetime of addresses is randomized, such that it's harder to 
infer when addresses are re-generated.

Thanks,
Fernando




-------- Forwarded Message --------
Subject: RFC 8981 on Temporary Address Extensions for Stateless Address 
Autoconfiguration in IPv6
Date: Sun, 28 Feb 2021 13:29:06 -0800 (PST)
From: rfc-editor at rfc-editor.org
To: ietf-announce at ietf.org, rfc-dist at rfc-editor.org
CC: drafts-update-ref at iana.org, ipv6 at ietf.org, rfc-editor at rfc-editor.org

A new Request for Comments is now available in online RFC libraries.

                 RFC 8981

         Title:      Temporary Address Extensions for Stateless 
            Address Autoconfiguration in IPv6         Author:     F. Gont,
                     S. Krishnan,
                     T. Narten,
                     R. Draves
         Status:     Standards Track
         Stream:     IETF
         Date:       February 2021
         Mailbox:    fgont at si6networks.com,
                     suresh at kaloom.com,
                     narten at cs.duke.edu,
                     richdr at microsoft.com
         Pages:      20
         Obsoletes:  RFC 4941

         I-D Tag:    draft-ietf-6man-rfc4941bis-12.txt

         URL:        https://www.rfc-editor.org/info/rfc8981

         DOI:        10.17487/RFC8981

This document describes an extension to IPv6 Stateless Address
Autoconfiguration that causes hosts to generate temporary addresses
with randomized interface identifiers for each prefix advertised with
autoconfiguration enabled. Changing addresses over time limits the
window of time during which eavesdroppers and other information
collectors may trivially perform address-based network-activity
correlation when the same address is employed for multiple
transactions by the same host. Additionally, it reduces the window of
exposure of a host as being accessible via an address that becomes
revealed as a result of active communication. This document obsoletes
RFC 4941.

This document is a product of the IPv6 Maintenance Working Group of the 
IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
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