[ 1969.037970][ T1138] br0: port 1(dummy0) entered blocking state
[ 1969.038578][ T1138] br0: port 1(dummy0) entered disabled state
[ 1969.038788][ T1138] dummy0: entered allmulticast mode
[ 1969.039720][ T1138] dummy0: entered promiscuous mode
[ 1969.064041][ T1139] br0: port 1(dummy0) entered blocking state
[ 1969.064225][ T1139] br0: port 1(dummy0) entered forwarding state
[ 1971.075102][   T12] dummy0: left allmulticast mode
[ 1971.075280][   T12] dummy0: left promiscuous mode
[ 1971.075508][   T12] br0: port 1(dummy0) entered disabled state