[ 1856.954801] br0: port 1(dummy0) entered blocking state
[ 1856.954879] br0: port 1(dummy0) entered disabled state
[ 1856.954944] dummy0: entered allmulticast mode
[ 1856.955025] dummy0: entered promiscuous mode
[ 1856.958250] br0: port 1(dummy0) entered blocking state
[ 1856.958280] br0: port 1(dummy0) entered forwarding state
[ 1857.184640] dummy0: left allmulticast mode
[ 1857.184676] dummy0: left promiscuous mode
[ 1857.184706] br0: port 1(dummy0) entered disabled state