[ 1917.360139] br0: port 1(dummy0) entered blocking state
[ 1917.360174] br0: port 1(dummy0) entered disabled state
[ 1917.360209] dummy0: entered allmulticast mode
[ 1917.360253] dummy0: entered promiscuous mode
[ 1917.362979] br0: port 1(dummy0) entered blocking state
[ 1917.363013] br0: port 1(dummy0) entered forwarding state
[ 1917.542775] dummy0: left allmulticast mode
[ 1917.542807] dummy0: left promiscuous mode
[ 1917.542889] br0: port 1(dummy0) entered disabled state