2017-07-12 10:39:39 INFO juju-log cni:5: Running Command "hostname"
2017-07-12 10:39:39 INFO juju-log cni:5: Running Command "ovn-k8s-overlay gateway-init                     --cluster-ip-subnet="192.168.0.0/16"                     --bridge-interface brens4                     --physical-ip 52.201.254.170/24                     --node-name="ip-172-31-8-137-gateway"                     --default-gw 172.31.0.1"
2017-07-12 10:39:40 INFO juju-log cni:5: Error running "ovn-k8s-overlay gateway-init                     --cluster-ip-subnet="192.168.0.0/16"                     --bridge-interface brens4                     --physical-ip 52.201.254.170/24                     --node-name="ip-172-31-8-137-gateway"                     --default-gw 172.31.0.1" : b'Failed operation.\n(No mac_address found for the bridge-interface)\n at Traceback (most recent call last):\n  File "/usr/local/bin/ovn-k8s-overlay", line 802, in <module>\n    main()\n  File "/usr/local/bin/ovn-k8s-overlay", line 797, in main\n    args.func(args)\n  File "/usr/local/bin/ovn-k8s-overlay", line 650, in gateway_init\n    raise Exception("No mac_address found for the bridge-interface")\nException: No mac_address found for the bridge-interface\n'
2017-07-12 10:39:40 INFO juju-log cni:5: Gateway init output :
2017-07-12 10:39:40 INFO juju-log cni:5: False
2017-07-12 10:39:40 INFO juju-log cni:5: Running Command "ovn-k8s-gateway-helper --physical-bridge=brens4                         --physical-interface=ens4 --pidfile --detach"
2017-07-12 10:39:41 INFO juju-log cni:5: Error running "ovn-k8s-gateway-helper --physical-bridge=brens4                         --physical-interface=ens4 --pidfile --detach" : b'physical bridge brens4 does not exist\n'
2017-07-12 10:39:41 INFO juju-log cni:5: Daemon start : False