[ 1783.678424] br0: port 1(dummy0) entered blocking state
[ 1783.678470] br0: port 1(dummy0) entered disabled state
[ 1783.678506] dummy0: entered allmulticast mode
[ 1783.678561] dummy0: entered promiscuous mode
[ 1783.681983] br0: port 1(dummy0) entered blocking state
[ 1783.682052] br0: port 1(dummy0) entered forwarding state
[ 1783.939581] dummy0: left allmulticast mode
[ 1783.939618] dummy0: left promiscuous mode
[ 1783.939697] br0: port 1(dummy0) entered disabled state