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[Russell Bryant <1335193@xxxxxxxxxxxxxxxxxx>]

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => juno-2

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https://bugs.launchpad.net/bugs/1335193

Title:
  libvirt lxc needs iptables checksum added for dhcp packets

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  I tested a devstack today with libvirt-lxc, and was unable to get a
  dhcp address in cirros 0.3.2.

  The reason is that cirros's udhcpc seems to ignore the response if it
  doesn't have checksums.

  the appropriate mangle rule would be written if /dev/vhost-net , but
  with newer kernels this is also happening on the lxc network devices.

  It seems the sane thing to do at this point is just to drop the
  protection based on '/dev/vhost-net' presence.

  --
  Related bugs:
   * https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/930962
   * https://bugzilla.redhat.com/show_bug.cgi?id=910619#c6

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