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Message-Id: <20110406.223400.71127145.davem@davemloft.net>
Date: Wed, 06 Apr 2011 22:34:00 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: hirofumi@...l.parknet.co.jp
Cc: netdev@...r.kernel.org
Subject: Re: problem of "ipv4: revert Set rt->rt_iif more sanely on output
routes."
From: OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Date: Thu, 07 Apr 2011 13:31:06 +0900
> I'm not pretty sure though, output message is
>
> ip_finish_output2: No header cache and no neighbour!
>
> I'm not debugging this though,
>
> static inline bool rt_is_output_route(struct rtable *rt)
> {
> return rt->rt_iif == 0;
> }
>
> from review I guess the above is one of cause.
arp_bind_neighbour() is only called if rt_is_output_route() is true
or route is unicast.
If packet is sent using a route for which arp_bind_neighbour() has not
been called, you will see that warning message.
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