[ 1700.798910] br0: port 1(dummy0) entered blocking state
[ 1700.798952] br0: port 1(dummy0) entered disabled state
[ 1700.798987] dummy0: entered allmulticast mode
[ 1700.799044] dummy0: entered promiscuous mode
[ 1700.802325] br0: port 1(dummy0) entered blocking state
[ 1700.802356] br0: port 1(dummy0) entered forwarding state
[ 1701.006101] dummy0: left allmulticast mode
[ 1701.006132] dummy0: left promiscuous mode
[ 1701.006160] br0: port 1(dummy0) entered disabled state