[ 1548.985850] br0: port 1(dummy0) entered blocking state
[ 1548.985895] br0: port 1(dummy0) entered disabled state
[ 1548.985931] dummy0: entered allmulticast mode
[ 1548.985983] dummy0: entered promiscuous mode
[ 1548.988475] br0: port 1(dummy0) entered blocking state
[ 1548.988546] br0: port 1(dummy0) entered forwarding state
[ 1549.165916] dummy0: left allmulticast mode
[ 1549.165960] dummy0: left promiscuous mode
[ 1549.165997] br0: port 1(dummy0) entered disabled state