[ 1856.181158] br0: port 1(dummy0) entered blocking state
[ 1856.181238] br0: port 1(dummy0) entered disabled state
[ 1856.181304] dummy0: entered allmulticast mode
[ 1856.181385] dummy0: entered promiscuous mode
[ 1856.184612] br0: port 1(dummy0) entered blocking state
[ 1856.184645] br0: port 1(dummy0) entered forwarding state
[ 1856.418815] dummy0: left allmulticast mode
[ 1856.418844] dummy0: left promiscuous mode
[ 1856.418874] br0: port 1(dummy0) entered disabled state