netdev - Re: [PATCH net-next] net: ipv4: route: Fix sending IGMP messages with link address

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Message-Id: <20150504.000422.1021776084367855653.davem@davemloft.net>
Date:	Mon, 04 May 2015 00:04:22 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	andrew@...n.ch
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: ipv4: route: Fix sending IGMP messages
 with link address

From: Andrew Lunn <andrew@...n.ch>
Date: Fri,  1 May 2015 16:39:54 +0200

> In setups with a global scope address on an interface, and a lesser
> scope address on an interface sending IGMP reports, the reports can be
> sent using the other interfaces global scope address rather than the
> local interface address. RFC 2236 suggests:
> 
>      Ignore the Report if you cannot identify the source address of
>      the packet as belonging to a subnet assigned to the interface on
>      which the packet was received.
> 
> since such reports could be forged.
> 
> Look at the protocol when deciding if a RT_SCOPE_LINK address should
> be used for the packet.
> 
> Signed-off-by: Andrew Lunn <andrew@...n.ch>

Applied, thanks Andrew.
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