[ 1656.745426] br0: port 1(dummy0) entered blocking state
[ 1656.745493] br0: port 1(dummy0) entered disabled state
[ 1656.745556] dummy0: entered allmulticast mode
[ 1656.745650] dummy0: entered promiscuous mode
[ 1656.748124] br0: port 1(dummy0) entered blocking state
[ 1656.748157] br0: port 1(dummy0) entered forwarding state
[ 1656.921897] dummy0: left allmulticast mode
[ 1656.921961] dummy0: left promiscuous mode
[ 1656.922020] br0: port 1(dummy0) entered disabled state