[ 1737.175361] br0: port 1(dummy0) entered blocking state
[ 1737.175404] br0: port 1(dummy0) entered disabled state
[ 1737.175441] dummy0: entered allmulticast mode
[ 1737.175493] dummy0: entered promiscuous mode
[ 1737.178866] br0: port 1(dummy0) entered blocking state
[ 1737.178934] br0: port 1(dummy0) entered forwarding state
[ 1737.435489] dummy0: left allmulticast mode
[ 1737.435524] dummy0: left promiscuous mode
[ 1737.435608] br0: port 1(dummy0) entered disabled state