[ 1809.275667] br0: port 1(dummy0) entered blocking state
[ 1809.275713] br0: port 1(dummy0) entered disabled state
[ 1809.275750] dummy0: entered allmulticast mode
[ 1809.275805] dummy0: entered promiscuous mode
[ 1809.279313] br0: port 1(dummy0) entered blocking state
[ 1809.279347] br0: port 1(dummy0) entered forwarding state
[ 1809.559515] dummy0: left allmulticast mode
[ 1809.559563] dummy0: left promiscuous mode
[ 1809.559596] br0: port 1(dummy0) entered disabled state