[ 1672.987052] br0: port 1(dummy0) entered blocking state
[ 1672.987124] br0: port 1(dummy0) entered disabled state
[ 1672.987193] dummy0: entered allmulticast mode
[ 1672.987286] dummy0: entered promiscuous mode
[ 1672.990060] br0: port 1(dummy0) entered blocking state
[ 1672.990095] br0: port 1(dummy0) entered forwarding state
[ 1673.172179] dummy0: left allmulticast mode
[ 1673.172380] dummy0: left promiscuous mode
[ 1673.172444] br0: port 1(dummy0) entered disabled state