[ 1870.733816] br0: port 1(dummy0) entered blocking state
[ 1870.733853] br0: port 1(dummy0) entered disabled state
[ 1870.733891] dummy0: entered allmulticast mode
[ 1870.733942] dummy0: entered promiscuous mode
[ 1870.737393] br0: port 1(dummy0) entered blocking state
[ 1870.737455] br0: port 1(dummy0) entered forwarding state
[ 1870.990070] dummy0: left allmulticast mode
[ 1870.990130] dummy0: left promiscuous mode
[ 1870.990191] br0: port 1(dummy0) entered disabled state