[118456] in North American Network Operators' Group
Re: IPv6 Deployment for the LAN
daemon@ATHENA.MIT.EDU (bmanning@vacation.karoshi.com)
Thu Oct 22 07:10:45 2009
Date: Thu, 22 Oct 2009 11:08:16 +0000
From: bmanning@vacation.karoshi.com
To: Karl Auer <kauer@biplane.com.au>
In-Reply-To: <1256208278.30246.683.camel@karl>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Thu, Oct 22, 2009 at 09:44:38PM +1100, Karl Auer wrote:
> On Thu, 2009-10-22 at 10:30 +0000, bmanning@vacation.karoshi.com wrote:
> > > The RA contains a preference level... maybe that doesn't cut it if
> > > multiple routers are sending the same preference level, but presumably
> > > that would not happen in a well-tended network.
> >
> > I point you to a fairly common Internet architecture artifact,
> > the exchange point... dozens of routers sharing a common
> > media for peering exchange.
>
> And how do they discriminate now, with IPv4?
>
> Regards, K.
>
IPv4 has no concept of RA/ND. to make this construct work at
all in IPv6, all participants have to turn -off- RA/ND to prevent
one or more routers trying to impose their views of addressing
on their neighbours.
--bill
