[ 1889.806241] br0: port 1(dummy0) entered blocking state
[ 1889.806317] br0: port 1(dummy0) entered disabled state
[ 1889.806384] dummy0: entered allmulticast mode
[ 1889.806466] dummy0: entered promiscuous mode
[ 1889.809932] br0: port 1(dummy0) entered blocking state
[ 1889.809962] br0: port 1(dummy0) entered forwarding state
[ 1890.050723] dummy0: left allmulticast mode
[ 1890.050757] dummy0: left promiscuous mode
[ 1890.050787] br0: port 1(dummy0) entered disabled state