[ 1730.731797] br0: port 1(dummy0) entered blocking state
[ 1730.731872] br0: port 1(dummy0) entered disabled state
[ 1730.731904] dummy0: entered allmulticast mode
[ 1730.731969] dummy0: entered promiscuous mode
[ 1730.735024] br0: port 1(dummy0) entered blocking state
[ 1730.735092] br0: port 1(dummy0) entered forwarding state
[ 1730.931388] dummy0: left allmulticast mode
[ 1730.931435] dummy0: left promiscuous mode
[ 1730.931491] br0: port 1(dummy0) entered disabled state