[ 2245.117258][ T6414] br0: port 1(dummy0) entered blocking state
[ 2245.117560][ T6414] br0: port 1(dummy0) entered disabled state
[ 2245.117826][ T6414] dummy0: entered allmulticast mode
[ 2245.118937][ T6414] dummy0: entered promiscuous mode
[ 2245.148242][ T6415] br0: port 1(dummy0) entered blocking state
[ 2245.148656][ T6415] br0: port 1(dummy0) entered forwarding state
[ 2247.693564][   T12] dummy0: left allmulticast mode
[ 2247.694416][   T12] dummy0: left promiscuous mode
[ 2247.694741][   T12] br0: port 1(dummy0) entered disabled state