[ 1722.565343] br0: port 1(dummy0) entered blocking state
[ 1722.565386] br0: port 1(dummy0) entered disabled state
[ 1722.565420] dummy0: entered allmulticast mode
[ 1722.565475] dummy0: entered promiscuous mode
[ 1722.568349] br0: port 1(dummy0) entered blocking state
[ 1722.568410] br0: port 1(dummy0) entered forwarding state
[ 1722.756994] dummy0: left allmulticast mode
[ 1722.757058] dummy0: left promiscuous mode
[ 1722.757119] br0: port 1(dummy0) entered disabled state