[ 1797.692495] br0: port 1(dummy0) entered blocking state
[ 1797.692533] br0: port 1(dummy0) entered disabled state
[ 1797.692572] dummy0: entered allmulticast mode
[ 1797.692623] dummy0: entered promiscuous mode
[ 1797.695908] br0: port 1(dummy0) entered blocking state
[ 1797.695968] br0: port 1(dummy0) entered forwarding state
[ 1797.904960] dummy0: left allmulticast mode
[ 1797.905001] dummy0: left promiscuous mode
[ 1797.905031] br0: port 1(dummy0) entered disabled state