[ 1924.681987] br0: port 1(dummy0) entered blocking state
[ 1924.682017] br0: port 1(dummy0) entered disabled state
[ 1924.682112] dummy0: entered allmulticast mode
[ 1924.682185] dummy0: entered promiscuous mode
[ 1924.685761] br0: port 1(dummy0) entered blocking state
[ 1924.685782] br0: port 1(dummy0) entered forwarding state
[ 1924.949413] dummy0: left allmulticast mode
[ 1924.949446] dummy0: left promiscuous mode
[ 1924.949466] br0: port 1(dummy0) entered disabled state