[ 1892.843801][ T5650] br0: port 1(dummy0) entered blocking state
[ 1892.844649][ T5650] br0: port 1(dummy0) entered disabled state
[ 1892.844863][ T5650] dummy0: entered allmulticast mode
[ 1892.845960][ T5650] dummy0: entered promiscuous mode
[ 1892.879028][ T5651] br0: port 1(dummy0) entered blocking state
[ 1892.879354][ T5651] br0: port 1(dummy0) entered forwarding state
[ 1894.758956][   T70] dummy0: left allmulticast mode
[ 1894.759647][   T70] dummy0: left promiscuous mode
[ 1894.759867][   T70] br0: port 1(dummy0) entered disabled state