[ 1930.277798] br0: port 1(dummy0) entered blocking state
[ 1930.277861] br0: port 1(dummy0) entered disabled state
[ 1930.277919] dummy0: entered allmulticast mode
[ 1930.277998] dummy0: entered promiscuous mode
[ 1930.281598] br0: port 1(dummy0) entered blocking state
[ 1930.281621] br0: port 1(dummy0) entered forwarding state
[ 1930.544216] dummy0: left allmulticast mode
[ 1930.544246] dummy0: left promiscuous mode
[ 1930.544268] br0: port 1(dummy0) entered disabled state