<div dir="ltr">On Fri, Sep 6, 2013 at 7:43 PM, Tim Chown <span dir="ltr"><<a href="mailto:tjc@ecs.soton.ac.uk" target="_blank">tjc@ecs.soton.ac.uk</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="word-wrap:break-word"><div><div class="im"><blockquote type="cite">
<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>You can do that using the privacy preference flag defined in draft-ietf-6man-addr-select-opt-11.<br></div></div></div></div></blockquote><div><br></div>
</div>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.</div>
<div><br></div><div>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 <a href="http://tools.ietf.org/html/draft-gont-6man-managing-privacy-extensions-01" target="_blank">http://tools.ietf.org/html/draft-gont-6man-managing-privacy-extensions-01</a>.</div>
</div></blockquote><div><br></div><div>Ah, I see. I thought the flag was on a per-prefix basis, but applied to *destination* prefixes, not source prefixes. I stand corrected.</div></div></div></div>