netdev - Re: [PATCH net] Don't allow overwrite of config src addr

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Message-ID: <58ee16db-7ab5-408d-46f6-371f04dce8d2@cogentembedded.com>
Date:   Mon, 20 Feb 2017 22:35:20 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Brian Russell <brussell@...cade.com>, netdev@...r.kernel.org
Subject: Re: [PATCH net] Don't allow overwrite of config src addr

Hello!

On 02/20/2017 08:03 PM, Brian Russell wrote:

> When using IPv6 transport and a default dst, a pointer to the configured
> source address is passed into the route lookup. If no source address is
> configured, then the value is overwritten.
>
> IPv6 route lookup ignores egress ifindex match if the source adress is set,

    Address. Perhaps can be fixed while applying?

> so if egress ifindex match is desired, the source address must be passed
> as any. The overwrite breaks this for subsequent lookups.
>
> Avoid this by copying the configured address to an existing stack variable
> and pass a pointer to that instead.
>
> Signed-off-by: Brian Russell <brussell@...cade.com>
[...]

MBR, Sergei