[ 1636.749221] br0: port 1(dummy0) entered blocking state
[ 1636.749260] br0: port 1(dummy0) entered disabled state
[ 1636.749294] dummy0: entered allmulticast mode
[ 1636.749341] dummy0: entered promiscuous mode
[ 1636.752168] br0: port 1(dummy0) entered blocking state
[ 1636.752202] br0: port 1(dummy0) entered forwarding state
[ 1636.950771] dummy0: left allmulticast mode
[ 1636.950812] dummy0: left promiscuous mode
[ 1636.950834] br0: port 1(dummy0) entered disabled state