Idealy nova is run with libvirt 1.2.11 or later to guarantee that
libvirt is calling ebtables with --concurrent. Since we can't
always guarantee this we have created this workaround.
The workaround is extremely hacky and not recommend but for those
who simply have no other way to address this bug the following
should be done.
* Copy /sbin/ebtables to /sbin/ebtables.real
* Copy the ebtables.workaround script to /sbin/ebtables
Caution: Future OS level updates and packages way overwrite the
above changes. Its recommend users upgrade to libvirt 1.2.11.
The work around script was copied from devstack and originally
written by sdague.
Change-Id: Icdffc59d68b73a6df22ce138558d6e23e1c96336
Closes-Bug: #1501366
17264ee6a6