[ 1930.718385] br0: port 1(dummy0) entered blocking state
[ 1930.718424] br0: port 1(dummy0) entered disabled state
[ 1930.718458] dummy0: entered allmulticast mode
[ 1930.718514] dummy0: entered promiscuous mode
[ 1930.721932] br0: port 1(dummy0) entered blocking state
[ 1930.721963] br0: port 1(dummy0) entered forwarding state
[ 1930.976922] dummy0: left allmulticast mode
[ 1930.976963] dummy0: left promiscuous mode
[ 1930.977011] br0: port 1(dummy0) entered disabled state