[ 1764.710218] br0: port 1(dummy0) entered blocking state
[ 1764.710266] br0: port 1(dummy0) entered disabled state
[ 1764.710304] dummy0: entered allmulticast mode
[ 1764.710358] dummy0: entered promiscuous mode
[ 1764.713134] br0: port 1(dummy0) entered blocking state
[ 1764.713197] br0: port 1(dummy0) entered forwarding state
[ 1764.893209] dummy0: left allmulticast mode
[ 1764.893239] dummy0: left promiscuous mode
[ 1764.893268] br0: port 1(dummy0) entered disabled state