[ 1783.347320] br0: port 1(dummy0) entered blocking state
[ 1783.347397] br0: port 1(dummy0) entered disabled state
[ 1783.347462] dummy0: entered allmulticast mode
[ 1783.347547] dummy0: entered promiscuous mode
[ 1783.350307] br0: port 1(dummy0) entered blocking state
[ 1783.350339] br0: port 1(dummy0) entered forwarding state
[ 1783.543036] dummy0: left allmulticast mode
[ 1783.543067] dummy0: left promiscuous mode
[ 1783.543098] br0: port 1(dummy0) entered disabled state