[ 1731.115556] br0: port 1(dummy0) entered blocking state
[ 1731.115599] br0: port 1(dummy0) entered disabled state
[ 1731.115630] dummy0: entered allmulticast mode
[ 1731.115677] dummy0: entered promiscuous mode
[ 1731.118648] br0: port 1(dummy0) entered blocking state
[ 1731.118679] br0: port 1(dummy0) entered forwarding state
[ 1731.331068] dummy0: left allmulticast mode
[ 1731.331105] dummy0: left promiscuous mode
[ 1731.331139] br0: port 1(dummy0) entered disabled state