[ 1706.059510] br0: port 1(dummy0) entered blocking state
[ 1706.059548] br0: port 1(dummy0) entered disabled state
[ 1706.059582] dummy0: entered allmulticast mode
[ 1706.059647] dummy0: entered promiscuous mode
[ 1706.062742] br0: port 1(dummy0) entered blocking state
[ 1706.062780] br0: port 1(dummy0) entered forwarding state
[ 1706.276149] dummy0: left allmulticast mode
[ 1706.276185] dummy0: left promiscuous mode
[ 1706.276215] br0: port 1(dummy0) entered disabled state