[ 1592.535754] br0: port 1(dummy0) entered blocking state
[ 1592.535802] br0: port 1(dummy0) entered disabled state
[ 1592.535837] dummy0: entered allmulticast mode
[ 1592.535888] dummy0: entered promiscuous mode
[ 1592.538723] br0: port 1(dummy0) entered blocking state
[ 1592.538787] br0: port 1(dummy0) entered forwarding state
[ 1592.737779] dummy0: left allmulticast mode
[ 1592.737828] dummy0: left promiscuous mode
[ 1592.737856] br0: port 1(dummy0) entered disabled state