On Jul 14, 2012, at 2:04 PM, Laurent GUERBY wrote: > On Sat, 2012-07-14 at 09:18 -0700, Owen DeLong wrote: >> On Jul 14, 2012, at 9:08 AM, Jérôme Nicolle wrote: >> >>> Le 13/07/12 16:38, -Hammer- a écrit : >>>> In the past, with IPv4, we have used reserved or "non-routable" >>> >>> I guess "non-routable IPv4" translates well to "non-routable IPv6", thus >>> putting Link-Local addresses on top of the list. >>> >>> Thought you may use th auto-configured addresses for that purpose, you >>> also may set LLAs to your liking. I use fe80::zone_ID:interface_ID , and >>> set such LLA to every gateways to make routing tables more legible, >>> those ID beeing arbitrary 16bit values. >>> >> >> Given that zone_IDs in my environments consist of terms like: >> >> fxp0 >> en0 >> eth0 >> ge-0/0/0.0 >> etc. >> >> How, exactly, would you turn those into part of an IPv6 address? > > Hi, > > We use LLA to "virtualize" interconnection to our users: > their network configuration is always static default via fe80::nnnn > and we route their /56 prefix to fe80::xxxx:yyyy where xxxx:yyyy is > unique per user - if our user want to do some routing of course. Since > we don't have GUA interconnections we don't have to manage them inside > our AS and we can move user stuff around without having them changing > anything to their static configuration. > > We give a /56 IPv6 per /32 IPv4 to our user which does /48 = /24 = 256 > "IP", it's nice to have more than one /64 around for some uses. > > Is there any "mass" hoster around that does provide by default a pefix > larger than /64 and that does route it to the user? It's quite simple to > do in IPv6 and we have the address space for it. > > Sincerely, > > Laurent
Why not just give each end-site a /48? An end-site with a /24 may only need a single or a few subnets while an end-site with a /32 may have a host of subnets behind their IPv4 NAT gateway. Making IPv6 topological assumptions for your end-users based on their IPv4 presentation makes little sense to me and is likely a disservice to your end users. Owen
