netdev - Re: Fwd: PROBLEM: IPv6 Duplicate Address Detection with non RFC-conform ICMPv6 packets

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Message-ID: <BANLkTinaXTa22Z_gMrqd+oD8cuTpnLN0cw@mail.gmail.com>
Date:	Tue, 10 May 2011 19:14:05 +0800
From:	wanq <picktracy@...il.com>
To:	Gervais Arthur <arthur.gervais@...a-lyon.fr>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Jan Ceuleers <jan.ceuleers@...puter.org>,
	netdev@...r.kernel.org
Subject: Re: Fwd: PROBLEM: IPv6 Duplicate Address Detection with non
 RFC-conform ICMPv6 packets

In fact, I think the implementation of Linux fully meet the RFC specifications.

Think about this, two nodes have the same MAC, the DAD of the
self-generated link-local address on the new one MUST NOT pass. And
the IPv6 traffic of the interface SHOULD be disabled, because there's
no better way to recover from MAC conflicts automatically.

2011/5/7 Gervais Arthur <arthur.gervais@...a-lyon.fr>:
> On 05/07/2011 04:06 PM, Eric Dumazet wrote:
>  > Le samedi 07 mai 2011 à 15:54 +0200, Gervais Arthur a écrit :
>  >
>  >> Why would the victim itself claim already having the IPv6 address?
>  >>
>  >
>  > Why should it care ? Please point me the RFC saying its illegal to send
>  > or receive a frame with SRC_MAC == DST_MAC
>  >
>
> There is no RFC statement saying that this is illegal. But we are not
> only talking about the Ethernet layer. There is also the ICMPv6 Layer.
>
> But neither in the IPv6 RFC's I can find something about this.
>
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