From: ebiederm@xmission.com (Eric W. Biederman)
To: swsnyder@home.com
Cc: Chris Wedgwood <cw@f00f.org>, linux-kernel@vger.kernel.org
Subject: Re: What does "Neighbour table overflow" message indicate?
Date: 29 Jul 2001 03:08:13 -0600 [thread overview]
Message-ID: <m11yn0cdc2.fsf@frodo.biederman.org> (raw)
In-Reply-To: <01072820231401.01125@mercury.snydernet.lan> <01072820534802.01125@mercury.snydernet.lan> <20010729135728.B3282@weta.f00f.org> <01072821151103.01125@mercury.snydernet.lan>
In-Reply-To: <01072821151103.01125@mercury.snydernet.lan>
> Further snooping shows the error msg text in file inux/net/ipv4/route.c:
>
> if (net_ratelimit())
> printk("Neighbour table overflow.\n");
>
> The reference to "net_ratelimit" make me wonder if it is related to
> iptables. I am using iptable, and have since kernel 2.4.1, but I've seen
> these messages before. Hmmm.
My experience with this is the message occurs when you a machine starts
arping for a non-existent ip address. I suspect net_ratelimit triggers
when there are too many arps.
Run tcpdump -n -i eth0 (assuming your network is on eth0) and see if you
see an arp request that never gets answered.
Eric
next prev parent reply other threads:[~2001-07-29 9:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-29 1:23 What does "Neighbour table overflow" message indicate? Steve Snyder
[not found] ` <20010729133848.A3254@weta.f00f.org>
2001-07-29 1:53 ` Steve Snyder
2001-07-29 1:57 ` Chris Wedgwood
2001-07-29 2:15 ` Steve Snyder
2001-07-29 9:08 ` Eric W. Biederman [this message]
2001-07-29 9:46 ` Kurt Roeckx
2001-07-29 13:55 ` Bernd Eckenfels
2001-07-30 12:38 ` Carlos O'Donell Jr.
2001-07-30 23:28 ` Rob Landley
2001-07-29 5:41 ` Riley Williams
2001-07-29 13:50 ` jeff millar
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