[ 1768.869921] br0: port 1(dummy0) entered blocking state
[ 1768.869997] br0: port 1(dummy0) entered disabled state
[ 1768.870063] dummy0: entered allmulticast mode
[ 1768.870156] dummy0: entered promiscuous mode
[ 1768.873446] br0: port 1(dummy0) entered blocking state
[ 1768.873489] br0: port 1(dummy0) entered forwarding state
[ 1769.081157] dummy0: left allmulticast mode
[ 1769.081188] dummy0: left promiscuous mode
[ 1769.081216] br0: port 1(dummy0) entered disabled state