[ 1802.559980] br0: port 1(dummy0) entered blocking state
[ 1802.560049] br0: port 1(dummy0) entered disabled state
[ 1802.560115] dummy0: entered allmulticast mode
[ 1802.560203] dummy0: entered promiscuous mode
[ 1802.563476] br0: port 1(dummy0) entered blocking state
[ 1802.563538] br0: port 1(dummy0) entered forwarding state
[ 1802.784279] dummy0: left allmulticast mode
[ 1802.784347] dummy0: left promiscuous mode
[ 1802.784436] br0: port 1(dummy0) entered disabled state