[ 1959.153302][  T678] br0: port 1(dummy0) entered blocking state
[ 1959.153580][  T678] br0: port 1(dummy0) entered disabled state
[ 1959.153855][  T678] dummy0: entered allmulticast mode
[ 1959.155498][  T678] dummy0: entered promiscuous mode
[ 1959.190253][  T679] br0: port 1(dummy0) entered blocking state
[ 1959.190571][  T679] br0: port 1(dummy0) entered forwarding state
[ 1961.634011][   T12] dummy0: left allmulticast mode
[ 1961.634999][   T12] dummy0: left promiscuous mode
[ 1961.635250][   T12] br0: port 1(dummy0) entered disabled state