[ 1768.749899] br0: port 1(dummy0) entered blocking state
[ 1768.749976] br0: port 1(dummy0) entered disabled state
[ 1768.750043] dummy0: entered allmulticast mode
[ 1768.750144] dummy0: entered promiscuous mode
[ 1768.753782] br0: port 1(dummy0) entered blocking state
[ 1768.753816] br0: port 1(dummy0) entered forwarding state
[ 1769.024060] dummy0: left allmulticast mode
[ 1769.024105] dummy0: left promiscuous mode
[ 1769.024165] br0: port 1(dummy0) entered disabled state