[138051] in North American Network Operators' Group
Re: Mac OS X 10.7, still no DHCPv6
daemon@ATHENA.MIT.EDU (Doug Barton)
Sun Feb 27 18:18:06 2011
Date: Sun, 27 Feb 2011 15:17:15 -0800
From: Doug Barton <dougb@dougbarton.us>
To: Mark Andrews <marka@isc.org>
In-Reply-To: <20110227223924.DF0E3B0E741@drugs.dv.isc.org>
Cc: Chuck Anderson <cra@WPI.EDU>, nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 02/27/2011 14:39, Mark Andrews wrote:
> DHCP kills privacy addresses.
> DHCP kills CGAs.
In some environments that's a feature. :)
Also, I think people forget the original motivation behind privacy
addresses. If you use RA/SLAAC on every different network that you use
IPv6 (say, with your laptop) then the bottom 64 bits are always going to
be the same. The theory was that this could provide a way to track the
same user across multiple networks, thus the desire to have the ability
to generate host identifiers that are "unique-but-temporary."
If you're on your home network (where the network prefix is always going
to be the same) privacy addresses have limited (although non-zero)
utility. If you're at work you're subject to the policies there, and if
they say "dhcpv6 + no privacy addresses" then that's that.
hth,
Doug
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