[ 1775.155465] br0: port 1(dummy0) entered blocking state
[ 1775.155508] br0: port 1(dummy0) entered disabled state
[ 1775.155542] dummy0: entered allmulticast mode
[ 1775.155592] dummy0: entered promiscuous mode
[ 1775.158348] br0: port 1(dummy0) entered blocking state
[ 1775.158383] br0: port 1(dummy0) entered forwarding state
[ 1775.337614] dummy0: left allmulticast mode
[ 1775.337645] dummy0: left promiscuous mode
[ 1775.337675] br0: port 1(dummy0) entered disabled state