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Re: [v6ops] Interesting problems with using IPv6

Fernando Gont <fernando@gont.com.ar> Sat, 13 September 2014 01:56 UTC

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Date: Fri, 12 Sep 2014 22:56:24 -0300
From: Fernando Gont <fernando@gont.com.ar>
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To: Owen DeLong <owen@delong.com>, Chuck Anderson <cra@WPI.EDU>
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Subject: Re: [v6ops] Interesting problems with using IPv6
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On 09/12/2014 07:33 PM, Owen DeLong wrote:
> A potential improvement could be if privacy addressing created a
> persistent random lower 24 bits and only rehashed the upper 40 bits
> of the suffix with each address rotation. In that way, you’d only
> have ~2 ND multicast groups per host.

That would break the sole purpose of privacy addresses. If the lower
24-bits are kept the same, an attacker can correlate the activities of a
node along time.

Thanks,
-- 
Fernando Gont
e-mail: fernando@gont.com.ar || fgont@si6networks.com
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1

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