def addErrback(self, errback, *args, **kw):
        return self.addCallbacks(passthru, errback,
                                 errbackArgs=args,
                                 errbackKeywords=kw)
Macvtap driver vlan transparency support.
dataset/ETHPy150Open twisted/twisted/twisted/internet/defer.py/Deferred.addErrback--crossover with--dataset/ETHPy150Open openstack/neutron/neutron/plugins/ml2/drivers/macvtap/mech_driver/mech_macvtap.py/MacvtapMechanismDriver.check_vlan_transparency