[ 1660.191547] br0: port 1(dummy0) entered blocking state
[ 1660.191584] br0: port 1(dummy0) entered disabled state
[ 1660.191615] dummy0: entered allmulticast mode
[ 1660.191660] dummy0: entered promiscuous mode
[ 1660.193966] br0: port 1(dummy0) entered blocking state
[ 1660.194019] br0: port 1(dummy0) entered forwarding state
[ 1660.364178] dummy0: left allmulticast mode
[ 1660.364208] dummy0: left promiscuous mode
[ 1660.364233] br0: port 1(dummy0) entered disabled state