[ 1783.077145] br0: port 1(dummy0) entered blocking state
[ 1783.077227] br0: port 1(dummy0) entered disabled state
[ 1783.077295] dummy0: entered allmulticast mode
[ 1783.077386] dummy0: entered promiscuous mode
[ 1783.081113] br0: port 1(dummy0) entered blocking state
[ 1783.081148] br0: port 1(dummy0) entered forwarding state
[ 1783.340561] dummy0: left allmulticast mode
[ 1783.340659] dummy0: left promiscuous mode
[ 1783.340726] br0: port 1(dummy0) entered disabled state