[ 1806.037946] br0: port 1(dummy0) entered blocking state
[ 1806.038013] br0: port 1(dummy0) entered disabled state
[ 1806.038083] dummy0: entered allmulticast mode
[ 1806.038170] dummy0: entered promiscuous mode
[ 1806.041477] br0: port 1(dummy0) entered blocking state
[ 1806.041508] br0: port 1(dummy0) entered forwarding state
[ 1806.248444] dummy0: left allmulticast mode
[ 1806.248476] dummy0: left promiscuous mode
[ 1806.248509] br0: port 1(dummy0) entered disabled state