Date: Fri, 22 Feb 2002 17:05:41 +0000 From: Bob Bishop <rb@gid.co.uk> To: Doug Ambrisko <ambrisko@ambrisko.com> Cc: hackers@FreeBSD.ORG Subject: Re: Multicast problem with sis interface? Message-ID: <4.3.2.7.2.20020222165515.00c14850@gid.co.uk> In-Reply-To: <200202192110.g1JLAFq02842@ambrisko.com> References: <l0313030ab8985e058a51@[194.32.164.2]>
next in thread | previous in thread | raw e-mail | index | archive | help
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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4.3.2.7.2.20020222165515.00c14850>