[ 1791.289509] br0: port 1(dummy0) entered blocking state
[ 1791.289546] br0: port 1(dummy0) entered disabled state
[ 1791.289568] dummy0: entered allmulticast mode
[ 1791.289610] dummy0: entered promiscuous mode
[ 1791.292942] br0: port 1(dummy0) entered blocking state
[ 1791.292969] br0: port 1(dummy0) entered forwarding state
[ 1791.536428] dummy0: left allmulticast mode
[ 1791.536459] dummy0: left promiscuous mode
[ 1791.536532] br0: port 1(dummy0) entered disabled state