[ 1797.309040] br0: port 1(dummy0) entered blocking state
[ 1797.309092] br0: port 1(dummy0) entered disabled state
[ 1797.309131] dummy0: entered allmulticast mode
[ 1797.309185] dummy0: entered promiscuous mode
[ 1797.312614] br0: port 1(dummy0) entered blocking state
[ 1797.312646] br0: port 1(dummy0) entered forwarding state
[ 1797.555290] dummy0: left allmulticast mode
[ 1797.555384] dummy0: left promiscuous mode
[ 1797.555443] br0: port 1(dummy0) entered disabled state