[ 1613.457496] br0: port 1(dummy0) entered blocking state
[ 1613.457544] br0: port 1(dummy0) entered disabled state
[ 1613.457581] dummy0: entered allmulticast mode
[ 1613.457632] dummy0: entered promiscuous mode
[ 1613.460460] br0: port 1(dummy0) entered blocking state
[ 1613.460526] br0: port 1(dummy0) entered forwarding state
[ 1613.651260] dummy0: left allmulticast mode
[ 1613.651297] dummy0: left promiscuous mode
[ 1613.651351] br0: port 1(dummy0) entered disabled state