[ 1779.705471] br0: port 1(dummy0) entered blocking state
[ 1779.705511] br0: port 1(dummy0) entered disabled state
[ 1779.705545] dummy0: entered allmulticast mode
[ 1779.705601] dummy0: entered promiscuous mode
[ 1779.708444] br0: port 1(dummy0) entered blocking state
[ 1779.708506] br0: port 1(dummy0) entered forwarding state
[ 1779.888075] dummy0: left allmulticast mode
[ 1779.888110] dummy0: left promiscuous mode
[ 1779.888162] br0: port 1(dummy0) entered disabled state