[ 2145.997757][ T8629] br0: port 1(dummy0) entered blocking state
[ 2145.997946][ T8629] br0: port 1(dummy0) entered disabled state
[ 2145.998106][ T8629] dummy0: entered allmulticast mode
[ 2145.999511][ T8629] dummy0: entered promiscuous mode
[ 2146.027208][ T8630] br0: port 1(dummy0) entered blocking state
[ 2146.027427][ T8630] br0: port 1(dummy0) entered forwarding state
[ 2147.892746][   T12] dummy0: left allmulticast mode
[ 2147.893649][   T12] dummy0: left promiscuous mode
[ 2147.893886][   T12] br0: port 1(dummy0) entered disabled state