kernel-packages team mailing list archive

[YAMAMOTO Hirotaka <ymmt2005@xxxxxxxxx>]

Same but without openvswitch.

In our case, source NAT virtual machine cannot property forward TCP traffics.
Disabling physical NIC rx-checksumming helps resolving the problem, i.e.,

ethtool -K em1 rx off

** Changed in: openvswitch (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1335292

Title:
  TCP does not work properly with virtio-net and tx/rx offloading is on

Status in linux package in Ubuntu:
  Confirmed
Status in openvswitch package in Ubuntu:
  Invalid

Bug description:
  Description:    Ubuntu 14.04 LTS
  Release:        14.04

  linux-image-generic:
    Installed: 3.13.0.30.36
    Candidate: 3.13.0.30.36
    Version table:
   *** 3.13.0.30.36 0
          500 http://ca.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
          100 /var/lib/dpkg/status
       3.13.0.24.28 0
          500 http://ca.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

  Please see Debian Bug Report, this issue exists in the latest kernel.
  You cannot pass traffic between virtio enabled guests:

  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=738863

  Thank you.

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