[ 1841.026321] br0: port 1(dummy0) entered blocking state
[ 1841.026363] br0: port 1(dummy0) entered disabled state
[ 1841.026396] dummy0: entered allmulticast mode
[ 1841.026444] dummy0: entered promiscuous mode
[ 1841.029865] br0: port 1(dummy0) entered blocking state
[ 1841.029927] br0: port 1(dummy0) entered forwarding state
[ 1841.245977] dummy0: left allmulticast mode
[ 1841.246013] dummy0: left promiscuous mode
[ 1841.246107] br0: port 1(dummy0) entered disabled state