[ 1900.179513][ T9369] br0: port 1(dummy0) entered blocking state
[ 1900.179759][ T9369] br0: port 1(dummy0) entered disabled state
[ 1900.180001][ T9369] dummy0: entered allmulticast mode
[ 1900.181104][ T9369] dummy0: entered promiscuous mode
[ 1900.203490][ T9370] br0: port 1(dummy0) entered blocking state
[ 1900.203809][ T9370] br0: port 1(dummy0) entered forwarding state
[ 1901.973788][   T70] dummy0: left allmulticast mode
[ 1901.974086][   T70] dummy0: left promiscuous mode
[ 1901.975302][   T70] br0: port 1(dummy0) entered disabled state