[ 1634.675747] br0: port 1(dummy0) entered blocking state
[ 1634.675827] br0: port 1(dummy0) entered disabled state
[ 1634.675899] dummy0: entered allmulticast mode
[ 1634.675991] dummy0: entered promiscuous mode
[ 1634.678919] br0: port 1(dummy0) entered blocking state
[ 1634.678950] br0: port 1(dummy0) entered forwarding state
[ 1634.882494] dummy0: left allmulticast mode
[ 1634.882532] dummy0: left promiscuous mode
[ 1634.882563] br0: port 1(dummy0) entered disabled state