[ 1645.972164] br0: port 1(dummy0) entered blocking state
[ 1645.972212] br0: port 1(dummy0) entered disabled state
[ 1645.972246] dummy0: entered allmulticast mode
[ 1645.972294] dummy0: entered promiscuous mode
[ 1645.974679] br0: port 1(dummy0) entered blocking state
[ 1645.974709] br0: port 1(dummy0) entered forwarding state
[ 1646.148358] dummy0: left allmulticast mode
[ 1646.148430] dummy0: left promiscuous mode
[ 1646.148491] br0: port 1(dummy0) entered disabled state