[ 1661.174799] br0: port 1(dummy0) entered blocking state
[ 1661.174837] br0: port 1(dummy0) entered disabled state
[ 1661.174877] dummy0: entered allmulticast mode
[ 1661.174930] dummy0: entered promiscuous mode
[ 1661.177553] br0: port 1(dummy0) entered blocking state
[ 1661.177617] br0: port 1(dummy0) entered forwarding state
[ 1661.345177] dummy0: left allmulticast mode
[ 1661.345211] dummy0: left promiscuous mode
[ 1661.345238] br0: port 1(dummy0) entered disabled state