[ 1631.332371] br0: port 1(dummy0) entered blocking state
[ 1631.332432] br0: port 1(dummy0) entered disabled state
[ 1631.332472] dummy0: entered allmulticast mode
[ 1631.332522] dummy0: entered promiscuous mode
[ 1631.335225] br0: port 1(dummy0) entered blocking state
[ 1631.335262] br0: port 1(dummy0) entered forwarding state
[ 1631.513377] dummy0: left allmulticast mode
[ 1631.513457] dummy0: left promiscuous mode
[ 1631.513521] br0: port 1(dummy0) entered disabled state