From owner-freebsd-net@FreeBSD.ORG Sat Oct 18 11:04:54 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D715416A4B3 for ; Sat, 18 Oct 2003 11:04:54 -0700 (PDT) Received: from mail2.ndsoftware.net (ns2.ndsoftware.net [195.140.149.70]) by mx1.FreeBSD.org (Postfix) with ESMTP id DD40F43F75 for ; Sat, 18 Oct 2003 11:04:53 -0700 (PDT) (envelope-from nicolas.deffayet@ndsoftware.net) Received: from nat.gw1.aub.fr.corp.ndsoftware.net ([195.140.149.50] helo=w1-2-aub.fr.corp.ndsoftware.com) by mail2.ndsoftware.net with esmtp (Exim 3.35 #1 (Debian)) id 1AAvRc-00040B-00 for ; Sat, 18 Oct 2003 20:04:52 +0200 From: Nicolas DEFFAYET To: freebsd-net@freebsd.org Content-Type: text/plain Organization: NDSoftware Message-Id: <1066500348.10046.197.camel@w1-2-aub.fr.corp.ndsoftware.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.4 Date: Sat, 18 Oct 2003 20:05:49 +0200 Content-Transfer-Encoding: 7bit Subject: TCP IPv4 connections problem X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 18 Oct 2003 18:04:55 -0000 Hello, I have a very strange problem on a router (R1): it stop to reply to TCP IPv4 connections on one of its network interfaces after a random time but it don't stop to reply to TCP IPv6 connections and ICMP IPv4/IPv6. The network is composed of 3 routers with the same hardware and software (FreeBSD 5.0): R1, R2 and R3. Interfaces on R1: ti0: to R2 ti1: to R3 ti2: to LAN1 Interfaces on R2: ti0: to R1 ti1: to LAN2 Interfaces on R3: ti0: to R1 ti1: to LAN3 Each interface have both IPv4 and IPv6 address. R3 <-> R1 <-> R2 When the problem occur (between 3 and 24 hours after reboot): LAN3 <-> R3: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK LAN3 <-> R1: ICMP IPv4/IPv6 and TCP IPv6 is OK, TCP IPv4 is not OK LAN3 <-> R2: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK R3 <-> R1: ICMP IPv4/IPv6 and TCP IPv6 is OK, TCP IPv4 is not OK R3 <-> R2: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK LAN1 <-> R1: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK LAN2 <-> R1: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK LAN2 <-> R2: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK R1 <-> R2: ICMP IPv4/IPv6 and TCP IPv4/IPv6 is OK When i try to establish a TCP IPv4 connection directly to R1 through the ti1 interface of R1 it dont work, but when i try to establish a TCP IPv4 connection directly to R1 through the ti0 or ti2 interface of R1 it work. I can establish from R3 a TCP IPv4 connection directly to R2 through R1. Do you have an idea how fix the problem ? Thanks Best Regards, -- Nicolas DEFFAYET, NDSoftware NDSoftware IP Network: http://www.ip.ndsoftware.net/ FNIX6 (French National Internet Exchange IPv6): http://www.fnix6.net/ EuroNOG: http://www.euronog.org/