netdev - Re: [PATCH net-next] neigh: probe application via netlink in NUD

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Message-Id: <20140226.154743.1440127803884219475.davem@davemloft.net>
Date:	Wed, 26 Feb 2014 15:47:43 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	timo.teras@....fi
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] neigh: probe application via netlink in
 NUD_PROBE

From: Timo Teräs <timo.teras@....fi>
Date: Wed, 26 Feb 2014 11:43:04 +0200

> iproute2 arpd seems to expect this as there's code and comments
> to handle netlink probes with NUD_PROBE set. It is used to flush
> the arpd cached mappings.
> 
> opennhrp instead turns off unicast probes (so it can handle all
> neighbour discovery). Without this change it will not see NUD_PROBE
> probes and cannot reconfirm the mapping. Thus currently neigh entry
> will just fail and can cause few packets dropped until broadcast
> discovery is restarted.
> 
> Earlier discussion on the subject:
> http://marc.info/?t=139305877100001&r=1&w=2
> 
> Signed-off-by: Timo Teräs <timo.teras@....fi>

Applied, thanks a lot Timo.
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