From: Thomas Graf <tgraf@suug.ch>
To: Patrick McHardy <kaber@trash.net>
Cc: Chris Friesen <cfriesen@nortel.com>,
yoshfuji@linux-ipv6.org, dada1@cosmosbay.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: "ip neigh show" not showing arp cache entries?
Date: Tue, 18 Dec 2007 01:33:12 +0100 [thread overview]
Message-ID: <20071218003312.GR11220@postel.suug.ch> (raw)
In-Reply-To: <47670B88.4010906@trash.net>
* Patrick McHardy <kaber@trash.net> 2007-12-18 00:51
> Chris Friesen wrote:
> >Patrick McHardy wrote:
> >
> >> From a kernel perspective there are only complete dumps, the
> >>filtering is done by iproute. So the fact that it shows them
> >>when querying specifically implies there is a bug in the
> >>iproute neighbour filter. Does it work if you omit "all"
> >>from the ip neigh show command?
> >
> >Omitting "all" gives identical results. It is still missing entries
> >when compared with the output of "arp".
>
>
> In that case the easiest way to debug this is probably if you
> add some debugging to ip/ipneigh.c:print_neigh() since I'm
> unable to reproduce this problem. A printf for all the filter
> conditions (=> return 0) at the top should do.
Alternatively, you can download libnl and run
NLCB=debug src/nl-neigh-dump brief
and check if the netlink message is sent by the kenrel for the
neighbour in question.
next prev parent reply other threads:[~2007-12-18 0:32 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-10 17:36 "ip neigh show" not showing arp cache entries? Chris Friesen
2007-12-10 17:54 ` Chris Friesen
2007-12-12 16:21 ` Chris Friesen
2007-12-12 16:46 ` Eric Dumazet
2007-12-12 18:25 ` Chris Friesen
2007-12-12 18:52 ` Eric Dumazet
2007-12-12 21:57 ` Chris Friesen
2007-12-12 22:06 ` YOSHIFUJI Hideaki / 吉藤英明
2007-12-17 15:32 ` Chris Friesen
2007-12-17 18:02 ` Patrick McHardy
2007-12-17 19:47 ` Chris Friesen
2007-12-17 23:51 ` Patrick McHardy
2007-12-18 0:33 ` Thomas Graf [this message]
2007-12-18 0:35 ` Patrick McHardy
2007-12-18 3:33 ` Herbert Xu
2007-12-18 14:52 ` Chris Friesen
2007-12-19 1:14 ` Herbert Xu
2007-12-19 14:28 ` Chris Friesen
2007-12-25 1:06 ` Herbert Xu
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