[ 1956.692050] br0: port 1(dummy0) entered blocking state
[ 1956.692128] br0: port 1(dummy0) entered disabled state
[ 1956.692198] dummy0: entered allmulticast mode
[ 1956.692289] dummy0: entered promiscuous mode
[ 1956.695070] br0: port 1(dummy0) entered blocking state
[ 1956.695102] br0: port 1(dummy0) entered forwarding state
[ 1956.887921] dummy0: left allmulticast mode
[ 1956.887957] dummy0: left promiscuous mode
[ 1956.888031] br0: port 1(dummy0) entered disabled state