[ 1627.853343] br0: port 1(dummy0) entered blocking state
[ 1627.853390] br0: port 1(dummy0) entered disabled state
[ 1627.853428] dummy0: entered allmulticast mode
[ 1627.853477] dummy0: entered promiscuous mode
[ 1627.856040] br0: port 1(dummy0) entered blocking state
[ 1627.856074] br0: port 1(dummy0) entered forwarding state
[ 1628.039406] dummy0: left allmulticast mode
[ 1628.039439] dummy0: left promiscuous mode
[ 1628.039473] br0: port 1(dummy0) entered disabled state