[ 1575.334579] br0: port 1(dummy0) entered blocking state
[ 1575.334634] br0: port 1(dummy0) entered disabled state
[ 1575.334667] dummy0: entered allmulticast mode
[ 1575.334719] dummy0: entered promiscuous mode
[ 1575.337275] br0: port 1(dummy0) entered blocking state
[ 1575.337338] br0: port 1(dummy0) entered forwarding state
[ 1575.537442] dummy0: left allmulticast mode
[ 1575.537484] dummy0: left promiscuous mode
[ 1575.537512] br0: port 1(dummy0) entered disabled state