[ 1791.465677] br0: port 1(dummy0) entered blocking state
[ 1791.465724] br0: port 1(dummy0) entered disabled state
[ 1791.465760] dummy0: entered allmulticast mode
[ 1791.465811] dummy0: entered promiscuous mode
[ 1791.469564] br0: port 1(dummy0) entered blocking state
[ 1791.469629] br0: port 1(dummy0) entered forwarding state
[ 1791.737498] dummy0: left allmulticast mode
[ 1791.737563] dummy0: left promiscuous mode
[ 1791.737632] br0: port 1(dummy0) entered disabled state