[ 1743.694585] br0: port 1(dummy0) entered blocking state
[ 1743.694634] br0: port 1(dummy0) entered disabled state
[ 1743.694682] dummy0: entered allmulticast mode
[ 1743.694743] dummy0: entered promiscuous mode
[ 1743.698764] br0: port 1(dummy0) entered blocking state
[ 1743.698837] br0: port 1(dummy0) entered forwarding state
[ 1743.974403] dummy0: left allmulticast mode
[ 1743.974450] dummy0: left promiscuous mode
[ 1743.974506] br0: port 1(dummy0) entered disabled state