[ 1641.072833] br0: port 1(dummy0) entered blocking state
[ 1641.072860] br0: port 1(dummy0) entered disabled state
[ 1641.072883] dummy0: entered allmulticast mode
[ 1641.072925] dummy0: entered promiscuous mode
[ 1641.075827] br0: port 1(dummy0) entered blocking state
[ 1641.075876] br0: port 1(dummy0) entered forwarding state
[ 1641.265444] dummy0: left allmulticast mode
[ 1641.265496] dummy0: left promiscuous mode
[ 1641.265552] br0: port 1(dummy0) entered disabled state