[ 1805.803657] br0: port 1(dummy0) entered blocking state
[ 1805.803713] br0: port 1(dummy0) entered disabled state
[ 1805.803747] dummy0: entered allmulticast mode
[ 1805.803798] dummy0: entered promiscuous mode
[ 1805.807214] br0: port 1(dummy0) entered blocking state
[ 1805.807246] br0: port 1(dummy0) entered forwarding state
[ 1806.046555] dummy0: left allmulticast mode
[ 1806.046585] dummy0: left promiscuous mode
[ 1806.046613] br0: port 1(dummy0) entered disabled state