[ 1805.554858] br0: port 1(dummy0) entered blocking state
[ 1805.554903] br0: port 1(dummy0) entered disabled state
[ 1805.554940] dummy0: entered allmulticast mode
[ 1805.554995] dummy0: entered promiscuous mode
[ 1805.558578] br0: port 1(dummy0) entered blocking state
[ 1805.558611] br0: port 1(dummy0) entered forwarding state
[ 1805.829027] dummy0: left allmulticast mode
[ 1805.829092] dummy0: left promiscuous mode
[ 1805.829164] br0: port 1(dummy0) entered disabled state