[ 1648.342293] br0: port 1(dummy0) entered blocking state
[ 1648.342340] br0: port 1(dummy0) entered disabled state
[ 1648.342376] dummy0: entered allmulticast mode
[ 1648.342430] dummy0: entered promiscuous mode
[ 1648.345363] br0: port 1(dummy0) entered blocking state
[ 1648.345430] br0: port 1(dummy0) entered forwarding state
[ 1648.531101] dummy0: left allmulticast mode
[ 1648.531149] dummy0: left promiscuous mode
[ 1648.531183] br0: port 1(dummy0) entered disabled state