[ 1867.896434] br0: port 1(dummy0) entered blocking state
[ 1867.896472] br0: port 1(dummy0) entered disabled state
[ 1867.896506] dummy0: entered allmulticast mode
[ 1867.896556] dummy0: entered promiscuous mode
[ 1867.899981] br0: port 1(dummy0) entered blocking state
[ 1867.900020] br0: port 1(dummy0) entered forwarding state
[ 1868.141958] dummy0: left allmulticast mode
[ 1868.142048] dummy0: left promiscuous mode
[ 1868.142108] br0: port 1(dummy0) entered disabled state