kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Neil Wilson, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11-rc5

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

If you are unable to test the mainline kernel, please comment as to why specifically you were unable to test it and add the following tags:
kernel-unable-to-test-upstream
kernel-unable-to-test-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/610391

Title:
  UDP checksum offload breaks DHCP on virtual machines

Status in The Linux Kernel:
  Unknown
Status in “isc-dhcp” package in Ubuntu:
  Invalid
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  When running an Ubuntu server on RHEL6 the dhclient on Ubuntu will
  report 'bad udp checksum' in response to the DHCP Offer packets coming
  from the Host.

  This is on a libvirt controlled KVM system using libvirt controlled
  dnsmasq processes on the Host.

  Optimisations within the kernel appear to be upsetting dhclient.

  http://www.pubbs.net/201004/dhcp/30492-dhcpd-problem-on-virtual-
  machines.html

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: linux-image-2.6.32-24-generic-pae (not installed)
  Regression: Yes
  Reproducible: Yes
  ProcVersionSignature: User Name 2.6.32-24.38-generic-pae 2.6.32.15+drm33.5
  Uname: Linux 2.6.32-24-generic-pae i686
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory
  Architecture: i386
  ArecordDevices: Error: [Errno 2] No such file or directory
  CurrentDmesg:
   [   13.240032] eth0: no IPv6 routers present
   [ 2868.734972] psmouse.c: Explorer Mouse at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
  Date: Tue Jul 27 09:33:31 2010
  Lspci: Error: [Errno 2] No such file or directory
  Lsusb: Error: [Errno 2] No such file or directory
  MachineType: Red Hat KVM
  PciMultimedia:
   
  ProcCmdLine: root=UUID=129537b3-af8e-4e06-bd9d-06626fa40823 ro quiet splash
  ProcEnviron:
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux
  dmi.bios.date: 01/01/2007
  dmi.bios.vendor: Seabios
  dmi.bios.version: 0.5.1
  dmi.chassis.type: 1
  dmi.chassis.vendor: Red Hat
  dmi.modalias: dmi:bvnSeabios:bvr0.5.1:bd01/01/2007:svnRedHat:pnKVM:pvrRHEL6.0.0PC:cvnRedHat:ct1:cvr:
  dmi.product.name: KVM
  dmi.product.version: RHEL 6.0.0 PC
  dmi.sys.vendor: Red Hat

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