kernel-packages team mailing list archive

[Piotr Misiak <piotr.misiak@xxxxxxxxxxx>]

When I return to 3.13.0-45 or 3.16.0-30 kernel versions everything works fine.
So it is a kernel version related bug.
I tested this on OVS version 2.0.2 and 2.4.0 but it doesn't matter which OVS version (userspace tools and kernel module) I use.

-- 
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/1504154

Title:
  OVS with GRE tunnels no longer works

Status in linux package in Ubuntu:
  New

Bug description:
  I have OpenStack environment with OVS with GRE tunnels between Compute
  nodes.

  All nodes OpenStack nodes have:
  Description:	Ubuntu 14.04.2 LTS
  Release:	14.04

  After upgrading kernel from 3.13.0-45 to 3.13.0-46 on one Compute node OpenStack networking on this node no longer works.
  It also does not work on any newer version up to 3.13.0-65.

  Everything looks OK, bridges and ports are configured in OVS, but
  there is no communication - VMs can't receive network configuration
  from DHCP agent running on another server.

  The same is with 3.16 kernel:

  Last working version is 3.16.0-30.
  With version 3.16.0-31and newer up to 3.16.0-50 network communication does not work.

  I analyzed changes included in 3.13.0-46 and 3.16.0-31 and both have the same change regarding GRE:
  * gre: fix the inner mac header in nbma tunnel xmit path

  Maybe this is the reason?

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1504154/+subscriptions