[ 1919.714662] br0: port 1(dummy0) entered blocking state
[ 1919.714730] br0: port 1(dummy0) entered disabled state
[ 1919.714795] dummy0: entered allmulticast mode
[ 1919.714885] dummy0: entered promiscuous mode
[ 1919.718353] br0: port 1(dummy0) entered blocking state
[ 1919.718384] br0: port 1(dummy0) entered forwarding state
[ 1919.980147] dummy0: left allmulticast mode
[ 1919.980184] dummy0: left promiscuous mode
[ 1919.980215] br0: port 1(dummy0) entered disabled state