[ 1546.879898] br0: port 1(dummy0) entered blocking state
[ 1546.879941] br0: port 1(dummy0) entered disabled state
[ 1546.879974] dummy0: entered allmulticast mode
[ 1546.880033] dummy0: entered promiscuous mode
[ 1546.882653] br0: port 1(dummy0) entered blocking state
[ 1546.882717] br0: port 1(dummy0) entered forwarding state
[ 1547.070679] dummy0: left allmulticast mode
[ 1547.070712] dummy0: left promiscuous mode
[ 1547.070744] br0: port 1(dummy0) entered disabled state