[ 1968.783995] br0: port 1(dummy0) entered blocking state
[ 1968.784067] br0: port 1(dummy0) entered disabled state
[ 1968.784145] dummy0: entered allmulticast mode
[ 1968.784238] dummy0: entered promiscuous mode
[ 1968.787680] br0: port 1(dummy0) entered blocking state
[ 1968.787713] br0: port 1(dummy0) entered forwarding state
[ 1969.009512] dummy0: left allmulticast mode
[ 1969.009542] dummy0: left promiscuous mode
[ 1969.009573] br0: port 1(dummy0) entered disabled state