On Fri, September 6, 2013 06:43, Tim Chown wrote: > On 6 Sep 2013, at 04:58, Lorenzo Colitti <[email protected]> wrote: >> For example, suppose a given host has both 2001:db8:0:1::12 (static) and >> 2001:db8:0:1:d723:fa68:bb1a:0743 (privacy). You would want to tell the >> host to use the static address for your prefixes and the privacy address >> for everything else. >> >> You can do that using the privacy preference flag defined in >> draft-ietf-6man-addr-select-opt-11. > > I'll have to go back and look now it's been around the IESG, but from > memory the privacy flag in that spec is global, not per prefix. In an > earlier version it was per prefix, e.g. to 'forbid' privacy addresses on > ULAs, but I recall that was reverted based on WG feedback. > > There was an I-D proposing a privacy flag for RAs, which was per prefix, > but that was dismissed quite quickly by the WG, see > http://tools.ietf.org/html/draft-gont-6man-managing-privacy-extensions-01.
As an IT guy that works at a place that deals health information, it'd really be handy to be able to be both very anonymous and very trackable depending on different situations when we go to IPv6. Having a per-prefix option would be useful. Currently we'd have to go with DHCPv6 temporary addresses if we want such a thing, which isn't an unreasonable solution, but it'd be handy to have SLAAC/RA as an option as well to provide such functionality.
