[154923] in North American Network Operators' Group
Re: using "reserved" IPv6 space
daemon@ATHENA.MIT.EDU (Karl Auer)
Tue Jul 17 00:41:44 2012
From: Karl Auer <kauer@biplane.com.au>
To: nanog@nanog.org
In-Reply-To: <4742592599634568524@unknownmsgid>
Date: Tue, 17 Jul 2012 14:40:58 +1000
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Mon, 2012-07-16 at 23:38 -0400, Matt Addison wrote:
> Oliver <olipro@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa> wrote:
> > Additionally, as an alternative to RAs, you can simply point default
> > at the all-routers anycast address.
>=20
> Wouldn't this result in duplicate packets leaving your network if
> there were more than 1 router listening to 'all routers' and you (at
> the MAC layer) multicasted to those listeners?
I think Oliver meant the subnet router anycast address.
Anycast gets you to one-of-many. The routers work out which of them is
currently getting the subnet router anycast traffic. If that router
drops out for any reason, another of the routers available on the link
takes over.
Regards, K.
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Karl Auer (kauer@biplane.com.au)
http://www.biplane.com.au/kauer
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