Date: Sat, 3 May 2003 10:38:53 -0700 (PDT) From: John Polstra <jdp@polstra.com> To: net@freebsd.org Cc: raymond@chikage.wsyntax.com Subject: Re: IPv6 Neighbor Discovery Problem with dc(4) Message-ID: <200305031738.h43HcrIn040717@strings.polstra.com> In-Reply-To: <3EB3404E.5030103@chikage.wsyntax.com> References: <3EB3404E.5030103@chikage.wsyntax.com>
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In article <3EB3404E.5030103@chikage.wsyntax.com>, Raymond Jimenez <raymond@chikage.wsyntax.com> wrote: > On my network, several machines are having trouble recognizing an icmp6 > neighbor solicitation. This only happens to me when I use the dc driver, > in combination with the ADMTek AN985 10/100BaseTX chipset. The machines > are running a combination of 4.7 and -CURRENT. The network topology > consists of 3 switches, 2 of Linksys make, and 1 of Gigafast make. The > computers will not recognize each other even when on the same switch. > Tcpdump on the sender of the packet shows that the other interface > (should be) reciving the packets, but is sending out no reply. When two > computers are using any other driver than dc(4), they can ping each > other. However, when tcpdump is done on the system with dc, the other > can ping it and send data packets back and forth. It continues working > after tcpdump is stopped. I've searched, and found nothing. > Is there something I should check? This sounds a lot like a multicast-related bug that may have been fixed just two days ago in -current. Here is the log message from "src/sys/pci/if_dc.c": revision 1.106 date: 2003/05/01 09:31:01; author: mbr; state: Exp; lines: +5 -1 Use only a 64bit hash filter table for ADM-Centaur cards like the Accton EN2242 and the ADMtek AN985 cards. PR: 32699 Submitted by: Jean-Luc Richier <Jean-Luc.Richier@imag.fr> Reviewed by: phk MFC after: 2 weeks John -- John Polstra John D. Polstra & Co., Inc. Seattle, Washington USA "Two buttocks cannot avoid friction." -- Malawi saying
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