Comment 11 for bug 1599329

I observe similar log on devstack while running dsvm-functional job:

tox -e dsvm-functional neutron.tests.functional.agent.test_l2_ovs_agent.TestOVSAgent.test_ancillary_port_creation_and_deletion

results in multiple same ports/Device not found errors in vswitchd.log

2016-07-26T13:33:15.071Z|00066|bridge|INFO|bridge br-intf218d1f17: added interface int-br-phd56447 on port 1
2016-07-26T13:33:15.134Z|00067|bridge|INFO|bridge br-phys6c5ab5cf: added interface phy-br-phd56447 on port 1
2016-07-26T13:33:15.409Z|00072|bridge|INFO|bridge br-intf218d1f17: added interface tf218d1f17-patch-tun on port 2
2016-07-26T13:33:15.457Z|00073|bridge|INFO|bridge br-tunf805184a6: added interface nf805184a6-patch-int on port 1
2016-07-26T13:33:17.039Z|00074|bridge|INFO|bridge test-br81758532: added interface tap25323a581e8 on port 1
2016-07-26T13:33:17.207Z|00075|netdev_linux|INFO|ioctl(SIOCGIFHWADDR) on tap25323a581e8 device failed: No such device
2016-07-26T13:33:17.613Z|00076|bridge|INFO|bridge test-br81758532: added interface tap74091c71013 on port 2

Full log here - http://paste.openstack.org/show/542112/