[ 1549.199539] br0: port 1(dummy0) entered blocking state
[ 1549.199620] br0: port 1(dummy0) entered disabled state
[ 1549.199690] dummy0: entered allmulticast mode
[ 1549.199787] dummy0: entered promiscuous mode
[ 1549.202365] br0: port 1(dummy0) entered blocking state
[ 1549.202402] br0: port 1(dummy0) entered forwarding state
[ 1549.381075] dummy0: left allmulticast mode
[ 1549.381129] dummy0: left promiscuous mode
[ 1549.381158] br0: port 1(dummy0) entered disabled state