Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 14 Dec 2000 14:46:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 14 Dec 2000 14:46:30 -0500 Received: from pak145.pakuni.net ([205.138.121.145]:54261 "EHLO postal.paktronix.com") by vger.kernel.org with ESMTP id ; Thu, 14 Dec 2000 14:46:15 -0500 Date: Thu, 14 Dec 2000 13:11:06 -0600 (CST) From: "Matthew G. Marsh" To: kuznet@ms2.inr.ac.ru cc: Pete Toscano , linux-kernel@vger.kernel.org Subject: Re: linux ipv6 questions. bugs? In-Reply-To: <200012141740.UAA02109@ms2.inr.ac.ru> Message-ID: 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 On Thu, 14 Dec 2000 kuznet@ms2.inr.ac.ru wrote: > Hello! [snip] > I have no idea what does happen. I cannot reproduce this. > Please, describe your setup in more details. Hi Alexey! I have several different boxen (test11, test12) that do something very similar. They cannot ping6 the link-local addresses at all. As in: [root@paksecuredX tech]# ping6 ::1 PING ::1(::1) from ::1 : 56 data bytes 64 bytes from ::1: icmp_seq=0 hops=64 time=351 usec 64 bytes from ::1: icmp_seq=1 hops=64 time=200 usec --- ::1 ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max/mdev = 0.200/0.275/0.351/0.077 ms [root@paksecuredX tech]# ip -6 ad 1: lo: mtu 3840 qdisc noqueue inet6 ::1/128 scope host 2: eth0: mtu 1500 qdisc pfifo_fast qlen 100 inet6 fe80::210:5aff:fe05:e828/10 scope link [root@paksecuredX tech]# ip -6 ro fe80::/10 dev eth0 proto kernel metric 256 mtu 1500 advmss 1440 ff00::/8 dev eth0 proto kernel metric 256 mtu 1500 advmss 1440 default dev eth0 proto kernel metric 256 mtu 1500 advmss 1440 unreachable default dev lo metric -1 error -101 [root@paksecuredX tech]# ping6 fe80::210:5aff:fe05:e828 connect: Invalid argument Now if I try and setup an address such as the following it works but still will not ping6 the link-local. IE: [root@paksecuredX tech]# ip -6 ad ad dead:2::1/64 dev eth0 [root@paksecuredX tech]# ip -6 ad 1: lo: mtu 3840 qdisc noqueue inet6 ::1/128 scope host 2: eth0: mtu 1500 qdisc pfifo_fast qlen 100 inet6 dead:2::1/64 scope global tentative inet6 fe80::210:5aff:fe05:e828/10 scope link [root@paksecuredX tech]# ping6 dead:2::1 PING dead:2::1(dead:2::1) from ::1 : 56 data bytes 64 bytes from dead:2::1: icmp_seq=0 hops=64 time=377 usec 64 bytes from dead:2::1: icmp_seq=1 hops=64 time=196 usec --- dead:2::1 ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max/mdev = 0.196/0.286/0.377/0.092 ms [root@paksecuredX tech]# ping6 fe80::210:5aff:fe05:e828 connect: Invalid argument Now from my local box which is running 2.2.12 I can ping the link-local of those boxes. IE: [root@netmonster Kernel]# ping6 fe80::210:5aff:fe05:e828 PING fe80::210:5aff:fe05:e828(fe80::210:5aff:fe05:e828) from fe80::2a0:ccff:fe21:eed3 : 56 data bytes 64 bytes from fe80::210:5aff:fe05:e828: icmp_seq=0 hops=64 time=1.291 msec 64 bytes from fe80::210:5aff:fe05:e828: icmp_seq=1 hops=64 time=520 usec 64 bytes from fe80::210:5aff:fe05:e828: icmp_seq=2 hops=64 time=500 usec --- fe80::210:5aff:fe05:e828 ping statistics --- 3 packets transmitted, 3 packets received, 0% packet loss round-trip min/avg/max/mdev = 0.500/0.770/1.291/0.368 ms So it looks like there is something going on with just the Link-Local addresses. I have not yet started to regress the kernels to see where this started. Hope it helps! Note - this is using iputils 001110 and also 001011 [snip] > Alexey -------------------------------------------------- Matthew G. Marsh, President Paktronix Systems LLC 1506 North 59th Street Omaha NE 68104 Phone: (402) 932-7250 Email: mgm@paktronix.com WWW: http://www.paktronix.com -------------------------------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/