[ 1838.086937] br0: port 1(dummy0) entered blocking state
[ 1838.086969] br0: port 1(dummy0) entered disabled state
[ 1838.086990] dummy0: entered allmulticast mode
[ 1838.087025] dummy0: entered promiscuous mode
[ 1838.090721] br0: port 1(dummy0) entered blocking state
[ 1838.090771] br0: port 1(dummy0) entered forwarding state
[ 1838.355517] dummy0: left allmulticast mode
[ 1838.355568] dummy0: left promiscuous mode
[ 1838.355627] br0: port 1(dummy0) entered disabled state