[ 1823.020425] br0: port 1(dummy0) entered blocking state
[ 1823.020475] br0: port 1(dummy0) entered disabled state
[ 1823.020508] dummy0: entered allmulticast mode
[ 1823.020590] dummy0: entered promiscuous mode
[ 1823.023369] br0: port 1(dummy0) entered blocking state
[ 1823.023443] br0: port 1(dummy0) entered forwarding state
[ 1823.221271] dummy0: left allmulticast mode
[ 1823.221315] dummy0: left promiscuous mode
[ 1823.221343] br0: port 1(dummy0) entered disabled state