[ 1917.636774] br0: port 1(dummy0) entered blocking state
[ 1917.636815] br0: port 1(dummy0) entered disabled state
[ 1917.636855] dummy0: entered allmulticast mode
[ 1917.636903] dummy0: entered promiscuous mode
[ 1917.640340] br0: port 1(dummy0) entered blocking state
[ 1917.640373] br0: port 1(dummy0) entered forwarding state
[ 1917.886085] dummy0: left allmulticast mode
[ 1917.886112] dummy0: left promiscuous mode
[ 1917.886135] br0: port 1(dummy0) entered disabled state