[ 1640.816794] br0: port 1(dummy0) entered blocking state
[ 1640.816839] br0: port 1(dummy0) entered disabled state
[ 1640.816877] dummy0: entered allmulticast mode
[ 1640.816933] dummy0: entered promiscuous mode
[ 1640.819593] br0: port 1(dummy0) entered blocking state
[ 1640.819626] br0: port 1(dummy0) entered forwarding state
[ 1641.008751] dummy0: left allmulticast mode
[ 1641.008827] dummy0: left promiscuous mode
[ 1641.008919] br0: port 1(dummy0) entered disabled state