Public bug reported:
Wireshark reports the following problems in DELL Inspiron 1526
Checksum: 0x1eba [incorrect, should be 0x404a (maybe caused by "TCP checksum
offload"?)]
Checksum: 0x1e73 [incorrect, should be 0xdd14 (maybe caused by "UDP checksum
offload"?)]
When trying to disable checksum
$ ethtool -k eth0
Offload parameters for eth0:
Cannot get device rx csum settings: Operation not supported
rx-checksumming: off
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: off
udp fragmentation offload: off
generic segmentation offload: on
$ sudo ethtool --offload eth0 tx off
Cannot set device tx csum settings: Operation not supported
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.10
DISTRIB_CODENAME=intrepid
DISTRIB_DESCRIPTION="Ubuntu 8.10"
$ uname -a
Linux alebalderas-laptop 2.6.27-11-generic #1 SMP Thu Jan 29 19:28:32 UTC 2009
x86_64 GNU/Linux
ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 8.10
NonfreeKernelModules: fglrx
Package: linux-image-2.6.27-11-generic 2.6.27-11.27
ProcCmdLine: root=UUID=bcadc99b-0622-451b-99d0-e0c31ef98150 ro quiet splash
ProcEnviron:
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.27-11.27-generic
SourcePackage: linux
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug
--
TCP/UDP Checksum Incorrect
https://bugs.launchpad.net/bugs/326406
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