[ 1759.029716] br0: port 1(dummy0) entered blocking state
[ 1759.029795] br0: port 1(dummy0) entered disabled state
[ 1759.029861] dummy0: entered allmulticast mode
[ 1759.029944] dummy0: entered promiscuous mode
[ 1759.033576] br0: port 1(dummy0) entered blocking state
[ 1759.033608] br0: port 1(dummy0) entered forwarding state
[ 1759.308137] dummy0: left allmulticast mode
[ 1759.308173] dummy0: left promiscuous mode
[ 1759.308247] br0: port 1(dummy0) entered disabled state