[ 1928.897331] br0: port 1(dummy0) entered blocking state
[ 1928.897364] br0: port 1(dummy0) entered disabled state
[ 1928.897399] dummy0: entered allmulticast mode
[ 1928.897446] dummy0: entered promiscuous mode
[ 1928.900706] br0: port 1(dummy0) entered blocking state
[ 1928.900738] br0: port 1(dummy0) entered forwarding state
[ 1929.121104] dummy0: left allmulticast mode
[ 1929.121133] dummy0: left promiscuous mode
[ 1929.121166] br0: port 1(dummy0) entered disabled state