[ 1738.289884] br0: port 1(dummy0) entered blocking state
[ 1738.289922] br0: port 1(dummy0) entered disabled state
[ 1738.289961] dummy0: entered allmulticast mode
[ 1738.290015] dummy0: entered promiscuous mode
[ 1738.293352] br0: port 1(dummy0) entered blocking state
[ 1738.293390] br0: port 1(dummy0) entered forwarding state
[ 1738.539260] dummy0: left allmulticast mode
[ 1738.539358] dummy0: left promiscuous mode
[ 1738.539432] br0: port 1(dummy0) entered disabled state