[ 1844.548835] br0: port 1(dummy0) entered blocking state
[ 1844.548877] br0: port 1(dummy0) entered disabled state
[ 1844.548908] dummy0: entered allmulticast mode
[ 1844.548975] dummy0: entered promiscuous mode
[ 1844.552771] br0: port 1(dummy0) entered blocking state
[ 1844.552800] br0: port 1(dummy0) entered forwarding state
[ 1844.838153] dummy0: left allmulticast mode
[ 1844.838195] dummy0: left promiscuous mode
[ 1844.838278] br0: port 1(dummy0) entered disabled state