[85771] in North American Network Operators' Group
Re: IPv6 daydreams
daemon@ATHENA.MIT.EDU (Jeroen Massar)
Mon Oct 17 08:04:40 2005
From: Jeroen Massar <jeroen@unfix.org>
To: David Barak <thegameiam@yahoo.com>
Cc: nanog@merit.edu
In-Reply-To: <20051017114319.43867.qmail@web31801.mail.mud.yahoo.com>
Date: Mon, 17 Oct 2005 14:00:27 +0200
Errors-To: owner-nanog@merit.edu
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On Mon, 2005-10-17 at 04:43 -0700, David Barak wrote:
> What I'm unhappy
> about is the exceedingly sparse allocation policies
> which mean that any enduser allocation represents a
> ridiculously large number of possible hosts.
See the HD ration + proposals about sizing it down to a /56 as mentioned
in my previous mail to this list.
> The only
> possible advantage I could see from this is the
> protection against random scanning finding a user -
> but new and fun worms will use whatever mechanism the
> hosts use to find each other: I guarantee that the
> "find a printer" function won't rely on a sequential
> probe of all of the possible host addresses in a /64
> either...
SDP, uPnP, DNSSD etc and most likely also using ff02::1 and other
multicast tricks.
The important thing here though is that you already have
a local address
> Also, the 64-bit addressing scheme is sized to include
> the MAC address, right? Why would encoding L2 data
> into L3 be a good thing?
Because this gives you an automatic unique IP address.
Also some L2's (firewire comes to mind) have 64 bit EUI's.
> The conceptual problem that
> I have had with v6 from the beginning is that it's not
> trying to optimize a single layer, it's really trying
> to merge several layers into one protocol. Ugh.
One could, at least in theory and afaik not tried yet, run IPv6 as L2 :)
Greets,
Jeroen
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