[ 1737.976741] br0: port 1(dummy0) entered blocking state
[ 1737.976789] br0: port 1(dummy0) entered disabled state
[ 1737.976822] dummy0: entered allmulticast mode
[ 1737.976872] dummy0: entered promiscuous mode
[ 1737.979511] br0: port 1(dummy0) entered blocking state
[ 1737.979553] br0: port 1(dummy0) entered forwarding state
[ 1738.185543] dummy0: left allmulticast mode
[ 1738.185583] dummy0: left promiscuous mode
[ 1738.185614] br0: port 1(dummy0) entered disabled state