[ 1617.561146] br0: port 1(dummy0) entered blocking state
[ 1617.561180] br0: port 1(dummy0) entered disabled state
[ 1617.561218] dummy0: entered allmulticast mode
[ 1617.561268] dummy0: entered promiscuous mode
[ 1617.563970] br0: port 1(dummy0) entered blocking state
[ 1617.564001] br0: port 1(dummy0) entered forwarding state
[ 1617.749490] dummy0: left allmulticast mode
[ 1617.749529] dummy0: left promiscuous mode
[ 1617.749585] br0: port 1(dummy0) entered disabled state