[ 1533.313213] br0: port 1(dummy0) entered blocking state
[ 1533.313250] br0: port 1(dummy0) entered disabled state
[ 1533.313276] dummy0: entered allmulticast mode
[ 1533.313327] dummy0: entered promiscuous mode
[ 1533.315583] br0: port 1(dummy0) entered blocking state
[ 1533.315613] br0: port 1(dummy0) entered forwarding state
[ 1533.479825] dummy0: left allmulticast mode
[ 1533.479852] dummy0: left promiscuous mode
[ 1533.479874] br0: port 1(dummy0) entered disabled state