Launchpad has imported 9 comments from the remote bug at https://bugzilla.redhat.com/show_bug.cgi?id=618558.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2010-07-27T09:23:17+00:00 Neil wrote: Description of problem: While running an Ubuntu Lucid virtual server under kvm on RHEL6, the DHCP system reports 'bad udp checksum' in response to DHCP offer packets coming from the libvirt launched dnsmasq process on the Host. Comparing RHEL5 to RHEL6 show that tx checksumming is switched on across the 'vnet' interfaces. Version-Release number of selected component (if applicable): kernel.x86_64 2.6.32-44.1.el6 @anaconda- RedHatEnterpriseLinux6-201004141252.x86_64/6.0 How reproducible: Setup a virtual network handing out DHCP addresses and run a virtual machine running dhclient3. If you run the dhclient3 in the console, you will see 'bad udp checksum in 5 packets' errors. tcpdump shows that the DHCP offer packet are reaching the virtual machine. Steps to Reproduce: 1. 2. 3. Actual results: 'bad udp checksum in 5 packets' Expected results: virtual machine picks up the ip address as normal. Additional info: http://www.pubbs.net/201004/dhcp/30492-dhcpd-problem-on-virtual- machines.html Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/610391/comments/0 ------------------------------------------------------------------------ On 2010-07-27T09:56:41+00:00 Neil wrote: Ubuntu bug: https://bugs.edge.launchpad.net/linux/+bug/610391 Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/610391/comments/3 ------------------------------------------------------------------------ On 2010-07-27T09:58:06+00:00 RHEL wrote: This issue has been proposed when we are only considering blocker issues in the current Red Hat Enterprise Linux release. ** If you would still like this issue considered for the current release, ask your support representative to file as a blocker on your behalf. Otherwise ask that it be considered for the next Red Hat Enterprise Linux release. ** Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/610391/comments/4 ------------------------------------------------------------------------ On 2010-07-28T12:53:58+00:00 Dor wrote: We solved that using netfilter, Michael ,please find the bug number to point to and close this bug Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/610391/comments/5 ------------------------------------------------------------------------ On 2010-07-28T13:55:57+00:00 Michael wrote: *** This bug has been marked as a duplicate of bug 605555 *** Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/610391/comments/6 ------------------------------------------------------------------------ On 2010-07-28T14:39:03+00:00 Neil wrote: I can't see that bug. What is the fix? Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/610391/comments/7 ------------------------------------------------------------------------ On 2010-07-29T10:31:47+00:00 Neil wrote: Verified the bug with libvirt-0.8.1-15.el6.x86_64, kernel-2.6.32-52.el6.x86_64 and iptables-1.4.7-3.el6.x86_64, and PASSED Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/610391/comments/8 ------------------------------------------------------------------------ On 2010-08-03T14:56:27+00:00 Michael wrote: Change to verified? Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/610391/comments/9 ------------------------------------------------------------------------ On 2010-08-04T21:50:39+00:00 Dor wrote: *** This bug has been marked as a duplicate of bug 605555 *** Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/610391/comments/10 ** Changed in: linux Status: Unknown => Invalid ** Changed in: linux Importance: Unknown => Critical -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/610391 Title: UDP checksum offload breaks DHCP on virtual machines Status in Linux: Invalid Status in isc-dhcp package in Ubuntu: Invalid Status in linux package in Ubuntu: Confirmed 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 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/610391/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
