netdev - Re: [PATCH net-next v4] IPv6: use anycast addresses as source addresses in echo reply

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Date:	Tue, 7 Jan 2014 04:38:38 -0800 (PST)
From:	François-Xavier Le Bail <fx.lebail@...oo.com>
To:	Hannes Frederic Sowa <hannes@...essinduktion.org>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki Yoshifuji <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>
Subject: Re: [PATCH net-next v4] IPv6: use anycast addresses as source addresses in echo reply

On Mon, 1/6/14, Hannes Frederic Sowa <hannes@...essinduktion.org> wrote:

>>But if an echo request arrive on an interface
>> which do not listen at this LL anycast, is a reply can occur ?
 
> I thought quite the opposite with anycast + forwarding
> enabled, that  we would process the packet.

yes, for a global scope anycast.
But a routers must not forward any packets with link-local source or destination addresses to other links, thus also ll anycast.

BR
François-Xavier

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