python-ethtoo-0.10系ではovirt stable の vdsmd が動かない

Apr 16 03:44:42 ovn2 journal: vdsm vds ERROR unexpected error
Traceback (most recent call last):
  File "/usr/share/vdsm/BindingXMLRPC.py", line 1070, in wrapper
    res = f(*args, **kwargs)
  File "/usr/share/vdsm/BindingXMLRPC.py", line 393, in getCapabilities
    ret = api.getCapabilities()
  File "/usr/share/vdsm/API.py", line 1185, in getCapabilities
    c = caps.get()
  File "/usr/share/vdsm/caps.py", line 369, in get
    caps.update(netinfo.get())
  File "/usr/lib64/python2.7/site-packages/vdsm/netinfo.py", line 557, in get
    netAttr.get('qosOutbound'))
  File "/usr/lib64/python2.7/site-packages/vdsm/netinfo.py", line 487, in _getNetInfo
    ipv4addr, ipv4netmask, ipv6addrs = getIpInfo(iface)
  File "/usr/lib64/python2.7/site-packages/vdsm/netinfo.py", line 317, in getIpInfo
    ipv6addrs = devInfo.get_ipv6_addresses()
SystemError: error return without exception set

]# yum downgrade python-ethtool.x86_64
Resolving Dependencies
--> Running transaction check
---> Package python-ethtool.x86_64 0:0.8-2.fc20 will be a downgrade
---> Package python-ethtool.x86_64 0:0.10-1.fc20 will be erased
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package                Arch           Version             Repository      Size
================================================================================
Downgrading:
 python-ethtool         x86_64         0.8-2.fc20          fedora          33 k

Transaction Summary
================================================================================
Downgrade  1 Package

Total download size: 33 k
Is this ok [y/d/N]: y
Downloading packages:
python-ethtool-0.8-2.fc20.x86_64.rpm                       |  33 kB   00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : python-ethtool-0.8-2.fc20.x86_64                             1/2
  Cleanup    : python-ethtool-0.10-1.fc20.x86_64                            2/2
  Verifying  : python-ethtool-0.8-2.fc20.x86_64                             1/2
  Verifying  : python-ethtool-0.10-1.fc20.x86_64                            2/2

Removed:
  python-ethtool.x86_64 0:0.10-1.fc20

Installed:
  python-ethtool.x86_64 0:0.8-2.fc20

Complete!