[ 2163.217972][ T5011] br0: port 1(dummy0) entered blocking state
[ 2163.218179][ T5011] br0: port 1(dummy0) entered disabled state
[ 2163.218347][ T5011] dummy0: entered allmulticast mode
[ 2163.220087][ T5011] dummy0: entered promiscuous mode
[ 2163.248860][ T5012] br0: port 1(dummy0) entered blocking state
[ 2163.249170][ T5012] br0: port 1(dummy0) entered forwarding state
[ 2165.195912][   T12] dummy0: left allmulticast mode
[ 2165.196845][   T12] dummy0: left promiscuous mode
[ 2165.197114][   T12] br0: port 1(dummy0) entered disabled state