netdev - Re: [PATCH] ipv6: use rt6_get_dflt_router to get default router in rt6_route

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Message-Id: <20131108.151838.396871634708278992.davem@davemloft.net>
Date:	Fri, 08 Nov 2013 15:18:38 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	duanj.fnst@...fujitsu.com
Cc:	hannes@...essinduktion.org, netdev@...r.kernel.org
Subject: Re: [PATCH] ipv6: use rt6_get_dflt_router to get default router in
 rt6_route_rcv

From: Duan Jiong <duanj.fnst@...fujitsu.com>
Date: Fri, 08 Nov 2013 09:56:53 +0800

> 
> As the rfc 4191 said, the Router Preference and Lifetime values in a
> ::/0 Route Information Option should override the preference and lifetime
> values in the Router Advertisement header. But when the kernel deals with
> a ::/0 Route Information Option, the rt6_get_route_info() always return
> NULL, that means that overriding will not happen, because those default
> routers were added without flag RTF_ROUTEINFO in rt6_add_dflt_router().
> 
> In order to deal with that condition, we should call rt6_get_dflt_router
> when the prefix length is 0.
> 
> Signed-off-by: Duan Jiong <duanj.fnst@...fujitsu.com>

Applied and queued up for -stable, thanks!
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