[ 1877.773660] br0: port 1(dummy0) entered blocking state
[ 1877.773732] br0: port 1(dummy0) entered disabled state
[ 1877.773797] dummy0: entered allmulticast mode
[ 1877.773884] dummy0: entered promiscuous mode
[ 1877.777085] br0: port 1(dummy0) entered blocking state
[ 1877.777117] br0: port 1(dummy0) entered forwarding state
[ 1878.002506] dummy0: left allmulticast mode
[ 1878.002545] dummy0: left promiscuous mode
[ 1878.002570] br0: port 1(dummy0) entered disabled state