[ 1906.450833] br0: port 1(dummy0) entered blocking state
[ 1906.450871] br0: port 1(dummy0) entered disabled state
[ 1906.450906] dummy0: entered allmulticast mode
[ 1906.450960] dummy0: entered promiscuous mode
[ 1906.454493] br0: port 1(dummy0) entered blocking state
[ 1906.454569] br0: port 1(dummy0) entered forwarding state
[ 1906.698417] dummy0: left allmulticast mode
[ 1906.698450] dummy0: left promiscuous mode
[ 1906.698478] br0: port 1(dummy0) entered disabled state