[Bug 906842] Re: dhcp client is broken on interfaces with checksum offloading (eg Xen vif)

[Stéphane Graber]

*** This bug is a duplicate of bug 930962 ***
    https://bugs.launchpad.net/bugs/930962

** This bug has been marked a duplicate of bug 930962
   dhcp3-server reports many bad udp checksums to syslog using virtio NIC

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https://bugs.launchpad.net/bugs/906842

Title:
  dhcp client is broken on interfaces with checksum offloading (eg Xen
  vif)

Status in “isc-dhcp” package in Ubuntu:
  New

Bug description:
  Checksum on such interfaces is invalid so it is an error to drop
  packets with invalid checksum coming from such interfaces.

  See links

  https://qa.mandriva.com/show_bug.cgi?id=63320

  https://bugs.mageia.org/show_bug.cgi?id=1243

  http://pkgs.fedoraproject.org/gitweb/?p=dhcp.git;a=blob_plain;f=dhcp-4.2.2
  -xen-checksum.patch;hb=HEAD

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: isc-dhcp-client 4.1.1-P1-17ubuntu10
  ProcVersionSignature: Error: [Errno 2] No such file or directory: '/proc/version_signature'
  Uname: Linux 3.1.0-1-amd64 x86_64
  NonfreeKernelModules: ext3 jbd mbcache xen_netfront xen_blkfront
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  Date: Tue Dec 20 12:38:13 2011
  DhclientLeases:
   
  InstallationMedia: Ubuntu-Server 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: isc-dhcp
  UpgradeStatus: No upgrade log present (probably fresh install)

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