[ 2278.790037][ T6011] br0: port 1(dummy0) entered blocking state
[ 2278.790345][ T6011] br0: port 1(dummy0) entered disabled state
[ 2278.790637][ T6011] dummy0: entered allmulticast mode
[ 2278.791788][ T6011] dummy0: entered promiscuous mode
[ 2278.824731][ T6012] br0: port 1(dummy0) entered blocking state
[ 2278.825202][ T6012] br0: port 1(dummy0) entered forwarding state
[ 2281.268663][   T12] dummy0: left allmulticast mode
[ 2281.269815][   T12] dummy0: left promiscuous mode
[ 2281.270135][   T12] br0: port 1(dummy0) entered disabled state