[ 1737.043123] br0: port 1(dummy0) entered blocking state
[ 1737.043162] br0: port 1(dummy0) entered disabled state
[ 1737.043192] dummy0: entered allmulticast mode
[ 1737.043247] dummy0: entered promiscuous mode
[ 1737.045686] br0: port 1(dummy0) entered blocking state
[ 1737.045721] br0: port 1(dummy0) entered forwarding state
[ 1737.219240] dummy0: left allmulticast mode
[ 1737.219271] dummy0: left promiscuous mode
[ 1737.219299] br0: port 1(dummy0) entered disabled state