[ 1606.559284] br0: port 1(dummy0) entered blocking state
[ 1606.559327] br0: port 1(dummy0) entered disabled state
[ 1606.559362] dummy0: entered allmulticast mode
[ 1606.559421] dummy0: entered promiscuous mode
[ 1606.562019] br0: port 1(dummy0) entered blocking state
[ 1606.562052] br0: port 1(dummy0) entered forwarding state
[ 1606.751246] dummy0: left allmulticast mode
[ 1606.751321] dummy0: left promiscuous mode
[ 1606.751387] br0: port 1(dummy0) entered disabled state