Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 29 Jul 2001 05:14:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 29 Jul 2001 05:14:39 -0400 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:46134 "EHLO flinx.biederman.org") by vger.kernel.org with ESMTP id ; Sun, 29 Jul 2001 05:14:21 -0400 To: swsnyder@home.com Cc: Chris Wedgwood , linux-kernel@vger.kernel.org Subject: Re: What does "Neighbour table overflow" message indicate? In-Reply-To: <01072820231401.01125@mercury.snydernet.lan> <01072820534802.01125@mercury.snydernet.lan> <20010729135728.B3282@weta.f00f.org> <01072821151103.01125@mercury.snydernet.lan> From: ebiederm@xmission.com (Eric W. Biederman) Date: 29 Jul 2001 03:08:13 -0600 In-Reply-To: <01072821151103.01125@mercury.snydernet.lan> Message-ID: Lines: 18 User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/20.5 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Original-Recipient: rfc822;linux-kernel-outgoing > 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/