[1452] in linux-net channel archive
Re: UDP: bad checksum.
daemon@ATHENA.MIT.EDU (STEFFENR@UWSTOUT.EDU)
Thu Nov 30 02:26:00 1995
From: STEFFENR@UWSTOUT.EDU
Date: Wed, 29 Nov 1995 10:33:20 -0600 (CST)
To: davec@world.std.com
Cc: linux-kernel@vger.rutgers.edu, linux-net@vger.rutgers.edu
X-VMS-To: IN%"davec@world.std.com"
> With kernel v1.3.45 I'm getting lots of UDP: bad checksum messages. The
> machine has a WD80x3 card, and seems to work fine as an NFS client and
> server.
Your not alone, I've been seeing lots of UDP checksum errors myself.
I have an SMC Ultra ethernet card, which, I believe is a similar driver
to the WD80x3.
>
> The full message is:
> UDP: bad checksum. From 807F7E0B:520 to 807F7EFF:520 ulen 512
> although sometimes the ulen is 242.
The messages I see are a little different:
UDP: bad checksum. From 00000000:68 to FFFFFFFF:67 ulen 308
It always the same message. Always. I traced the packets to one specific
machine, but I'm one a large network and have no way of tracking down
what type of machine it is (or even where it is.
It's gotta be a Linux net problem specific to later 1.3.x kernels. The
messages go away in 1.2.13, and I've noticed them 1.3.x since 1.3.35 or
so.
+------------------------------------------------------------------------+
| Russ Steffen, UW-Stout |
| STEFFENR@UWSTOUT.EDU |
+------------------------------------------------------------------------+
