[ 1977.730828][T21776] br0: port 1(dummy0) entered blocking state
[ 1977.731022][T21776] br0: port 1(dummy0) entered disabled state
[ 1977.731179][T21776] dummy0: entered allmulticast mode
[ 1977.732501][T21776] dummy0: entered promiscuous mode
[ 1977.760204][T21777] br0: port 1(dummy0) entered blocking state
[ 1977.760603][T21777] br0: port 1(dummy0) entered forwarding state
[ 1979.728287][   T12] dummy0: left allmulticast mode
[ 1979.729306][   T12] dummy0: left promiscuous mode
[ 1979.729872][   T12] br0: port 1(dummy0) entered disabled state