From owner-freebsd-hackers Fri Feb 22 9:12:41 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from gidgate.gid.co.uk (gid.co.uk [194.32.164.225]) by hub.freebsd.org (Postfix) with ESMTP id 5F32937B400 for ; Fri, 22 Feb 2002 09:12:35 -0800 (PST) Received: (from rb@localhost) by gidgate.gid.co.uk (8.11.6/8.11.6) id g1MHCEO42869; Fri, 22 Feb 2002 17:12:14 GMT (envelope-from rb) Message-Id: <4.3.2.7.2.20020222165515.00c14850@gid.co.uk> X-Sender: rbmail@gid.co.uk X-Mailer: QUALCOMM Windows Eudora Version 4.3.2 Date: Fri, 22 Feb 2002 17:05:41 +0000 To: Doug Ambrisko From: Bob Bishop Subject: Re: Multicast problem with sis interface? Cc: hackers@FreeBSD.ORG In-Reply-To: <200202192110.g1JLAFq02842@ambrisko.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi, At 13:10 19/02/02 -0800, Doug Ambrisko wrote: >Bob Bishop writes: >| No dice with last night's -STABLE. And it's definitely the interface, I've >| tried a variety and netatalk works with everything (including the dreaded >| Via Rhine) except for the onboard sis0. >| >| I suppose it's time for some comparative tcpdumping... > >Pity that would have been an easy fix. Doing tcpdump should help. >I like Ethereal so I can drill down a little easier. This is what tcpdump (on a disinterested machine) sees: sis - fails: 20:53:43.423585 255.0.158.nis > 0.0.nis: nbp-lkup 1: "=:=@*" [addr=255.0.158.128] aaaa 0308 0007 809b 001a 8369 0000 ff00 ff9e 0202 0221 01ff 009e 8000 013d 013d 012a ffff ffff ffff ffff ffff ffff vr - works: 20:54:55.022827 255.0.158.nis > 0.0.nis: nbp-lkup 1: "=:=@*" [addr=255.0.158.128] aaaa 0308 0007 809b 001a 8369 0000 ff00 ff9e 0202 0221 01ff 009e 8000 013d 013d 012a 0050 baec bd66 00ff 009e 0000 Those trailing 1's look suspicious to me. The NBP lookup packet is only 48 bytes, so needs padding to the ethernet minimum 60 on the wire. I suspect this isn't happening on the sis. The packets are otherwise well-formed (and the ethernet headers (not shown above) are correct). I suppose I could dig out the 'scope... -- Bob Bishop +44 (0)118 977 4017 rb@gid.co.uk fax +44 (0)118 989 4254 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message