[ 1667.182579] br0: port 1(dummy0) entered blocking state
[ 1667.182620] br0: port 1(dummy0) entered disabled state
[ 1667.182650] dummy0: entered allmulticast mode
[ 1667.182705] dummy0: entered promiscuous mode
[ 1667.185526] br0: port 1(dummy0) entered blocking state
[ 1667.185596] br0: port 1(dummy0) entered forwarding state
[ 1667.371721] dummy0: left allmulticast mode
[ 1667.371758] dummy0: left promiscuous mode
[ 1667.371821] br0: port 1(dummy0) entered disabled state