Re: Deprecating IPv6 (Re: draft-bourbaki-6man-classless-ipv6-00)

Le 06/06/2017 à 07:09, Lorenzo Colitti a écrit :
> On Tue, Jun 6, 2017 at 3:47 AM, james woodyatt <jhw@google.com
> <mailto:jhw@google.com>> wrote:
>
>     Now is as good a time as any to repeat that I’m working on
>     delivering *basically* this now. Not in ten years. Now.
>
>
> Here's a solution that works now: ND proxying.

But it's EXPERIMENTAL.  And the technique does not scale.

Alex

>
> OpenWRT has had code to do it for a few years now. IIRC they're on to
> their second implementation, the first one was here
> <https://wiki.openwrt.org/doc/uci/6relayd>.
>
> IIRC when I wrote my own proof-of-concept implementation it wasn't too
> hard. It's particularly easy when you don't need to support autoconf on
> the southbound interface, which you presumably don't need to support
> since 6LoWPAN has IPv6 addresses that are known in advance. AIUI this is
> similar to what the Android on ChromeOS does: the Android code runs in a
> separate namespace (equivalent role to the 6LoWPAN network), and gets an
> IPv6 address. There's a daemon on the root namespace (equivalent role to
> the BR) runs ND proxy for that address. That code may be open sourced
> under a license that would allow you to use it as is.
>
> Running ND proxying on Linux is pretty easy even without writing any
> packet handling code using the IPV6_JOIN_ANYCAST socket option. Apache
> licensed code (running on production Android devices) is here
> <https://android.googlesource.com/platform/external/android-clat/+/master/setif.c>,
> look for do_anycast_setsockopt.
>
>     We are already on the path to IPv6/NAT w/ address amplification. We
>     had a chance to stop it, and we blew it. It’s time to move on from
>     that mistake.
>
>
> You may be on that path at the moment, but I don't think you were
> obliged to take it. You could have (and maybe still can) implement ND
> proxying.
>
>
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