... My $.02 or so, inline ...
>-----Original Message----- >From: Manfredi, Albert E [mailto:[EMAIL PROTECTED] >Sent: Tuesday, June 12, 2007 14:58 >To: Paul Vixie; IETF IPv6 Mailing List >Subject: RE: Revising Centrally Assigned ULA draft > >> -----Original Message----- >> From: Paul Vixie [mailto:[EMAIL PROTECTED] > >> if we're going to expect routability to provide connectivity in some >> cases but not all, which is what's implied by saying "never appear >> off-site", then we need to know what cases and exactly what noncases. >> so what's a "site"? >> or what's an "administrative domain"? or call it what you want -- >> what is it and how do the routing domain, connectivity domain, and the >> allocation domain relate to each other? > >I think the answers to these questions are exactly the same as they >would be for IPv4 private address blocks, although it's more imperative >in the case of IPv4 that they be non-routable outside whatever >boundaries one sets. So then ... Exactly right. It is meant to be a private address space, to be routed / routable as private address space should be - specifically NOT on the public internet. > >> if i seem anxious to cut to the chase it's because i've read all this >> before when "site local" was first proposed and then later, again, >> when it was deprecated. so let's keep our feet on the ground and >> define our terms and make sure we have common understanding before >> anybody runs out ahead. > >Does anyone have an answer to this? Site local were deprecated because >the consensus was that there's no need for "private" addresses in IPv6. >Are these ULA-Cs simply taking their place? My understanding is that Site Locals were deprecated not because private address space is bad in and of itself, but rather - the human element of lazy allocation (start low & count up) inevitably leads to addressing conflicts and, golly, can't we be smarter this time around? > >Should routers not forward ULAs under any circumstance? Routers, meaning any routers? Of course they should - the whole point is to have private IPs that are routable (unlike link-local addresses). Routers, meaning out in the DFZ - of course not, this is private address space. (Except maybe to black-hole them ,that is) /TJ -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
