[ 1839.003344] br0: port 1(dummy0) entered blocking state
[ 1839.003415] br0: port 1(dummy0) entered disabled state
[ 1839.003488] dummy0: entered allmulticast mode
[ 1839.003573] dummy0: entered promiscuous mode
[ 1839.006855] br0: port 1(dummy0) entered blocking state
[ 1839.006891] br0: port 1(dummy0) entered forwarding state
[ 1839.231276] dummy0: left allmulticast mode
[ 1839.231314] dummy0: left promiscuous mode
[ 1839.231341] br0: port 1(dummy0) entered disabled state