[ 1864.121553] br0: port 1(dummy0) entered blocking state
[ 1864.121630] br0: port 1(dummy0) entered disabled state
[ 1864.121700] dummy0: entered allmulticast mode
[ 1864.121787] dummy0: entered promiscuous mode
[ 1864.125287] br0: port 1(dummy0) entered blocking state
[ 1864.125322] br0: port 1(dummy0) entered forwarding state
[ 1864.387930] dummy0: left allmulticast mode
[ 1864.387965] dummy0: left promiscuous mode
[ 1864.387995] br0: port 1(dummy0) entered disabled state