[ 1783.216573] br0: port 1(dummy0) entered blocking state
[ 1783.216651] br0: port 1(dummy0) entered disabled state
[ 1783.216717] dummy0: entered allmulticast mode
[ 1783.216820] dummy0: entered promiscuous mode
[ 1783.220187] br0: port 1(dummy0) entered blocking state
[ 1783.220250] br0: port 1(dummy0) entered forwarding state
[ 1783.431806] dummy0: left allmulticast mode
[ 1783.431836] dummy0: left promiscuous mode
[ 1783.431868] br0: port 1(dummy0) entered disabled state