[ 1672.959576] br0: port 1(dummy0) entered blocking state
[ 1672.959620] br0: port 1(dummy0) entered disabled state
[ 1672.959653] dummy0: entered allmulticast mode
[ 1672.959712] dummy0: entered promiscuous mode
[ 1672.962238] br0: port 1(dummy0) entered blocking state
[ 1672.962298] br0: port 1(dummy0) entered forwarding state
[ 1673.137132] dummy0: left allmulticast mode
[ 1673.137215] dummy0: left promiscuous mode
[ 1673.137304] br0: port 1(dummy0) entered disabled state