[ 1906.594155] br0: port 1(dummy0) entered blocking state
[ 1906.594221] br0: port 1(dummy0) entered disabled state
[ 1906.594285] dummy0: entered allmulticast mode
[ 1906.594366] dummy0: entered promiscuous mode
[ 1906.597854] br0: port 1(dummy0) entered blocking state
[ 1906.597884] br0: port 1(dummy0) entered forwarding state
[ 1906.843151] dummy0: left allmulticast mode
[ 1906.843177] dummy0: left promiscuous mode
[ 1906.843201] br0: port 1(dummy0) entered disabled state