Date: Thu, 23 Aug 2001 20:14:12 +0200 From: Palle Lyckegaard <PalleLyckegaard@e-noerd.dk> To: Francois Tigeot <francois.tigeot@nic.fr> Cc: freebsd-net@FreeBSD.ORG Subject: Re: Problem with IPv6 autoconfiguration and DFE-550TX Message-ID: <3B8547F4.2AAC11C7@e-noerd.dk> References: <20010823120933.A87977@brazil.nic.fr>
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Hi, Are you sure that all your nodes are running 10 Mbit or 100 Mbit ? Will the hub get confused by a mixture of 10 and 100 Mbit cards? I have recently seen a case like this (on NetBSD 1.5 sending NS). Try using a cross-over cable between your router and each of your hosts - one at a time. This will isolate the case of the failure - in my case the hub... regards Palle Francois Tigeot wrote: > Hi, > > IPv6 autoconfiguration with -STABLE and Dlink DFE-550TX network adapters is > not working as it should. > > My network topology is simple : 3 machines on the same ethernet segment, > connected by a 10/100 hub. They are running 4.4-RC as of today and use the > same NIC, a Dlink DFE-550TX (ste driver). > > Initialy running the 'rtsol ste0' command on a client machines did not give > any result. > I then tried to see what was going on on the wire by running tcpdump. This > modified the behavior of the machine running it. > > Here are some tcpdump results observed after running a single 'rtsol' command > on the client: > > Router and client interfaces in normal mode. > traffic captured from an other machine on the same hub: > > 10:19:50.036 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > 10:19:54.055 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > 10:19:58.075 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > > Tcpdump running on the router. > The router and an other machine on the wire show the same results: > > 10:20:42.590 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > 10:20:42.882 fe80::250:baff:fe15:69fc > ff02::1: icmp6: router advertisement > 10:20:46.609 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > 10:20:46.742 fe80::250:baff:fe15:69fc > ff02::1: icmp6: router advertisement > 10:20:50.629 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > 10:20:50.802 fe80::250:baff:fe15:69fc > ff02::1: icmp6: router advertisement > > The client does not get configured. > > Tcpdump running on the client, router interface in normal mode > The client and the observation machine show the same results: > > 10:22:04.575 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > 10:22:08.595 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > 10:22:12.615 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > > The client does not get configured. > > Tcpdump running on the client and the router. > All three machines show the same results: > > 10:25:23.608 fe80::250:baff:fe71:bded > ff02::2: icmp6: router solicitation > 10:25:24.083 fe80::250:baff:fe15:69fc > ff02::1: icmp6: router advertisement > 10:25:24.084 :: > ff02::1:ff71:bded: icmp6: neighbor sol: who has [client] > > Here, the client machine gets configured. > > It seems that only the machines having their interface in promiscuous mode > were able to receive the multicast datagrams. They then ran as they should > have, which leads me to think the problem is not with the card itself. > > Is this a known problem with the ste driver ? > > How can I be sure the client does not receive the advertisement without > running tcpdump ? > > Thanks in advance, > > Francois Tigeot > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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