[ 1700.538823] br0: port 1(dummy0) entered blocking state
[ 1700.538869] br0: port 1(dummy0) entered disabled state
[ 1700.538906] dummy0: entered allmulticast mode
[ 1700.538958] dummy0: entered promiscuous mode
[ 1700.541916] br0: port 1(dummy0) entered blocking state
[ 1700.541954] br0: port 1(dummy0) entered forwarding state
[ 1700.741063] dummy0: left allmulticast mode
[ 1700.741107] dummy0: left promiscuous mode
[ 1700.741140] br0: port 1(dummy0) entered disabled state