[ 1871.041254] br0: port 1(dummy0) entered blocking state
[ 1871.041333] br0: port 1(dummy0) entered disabled state
[ 1871.041399] dummy0: entered allmulticast mode
[ 1871.041489] dummy0: entered promiscuous mode
[ 1871.044980] br0: port 1(dummy0) entered blocking state
[ 1871.045011] br0: port 1(dummy0) entered forwarding state
[ 1871.295855] dummy0: left allmulticast mode
[ 1871.295894] dummy0: left promiscuous mode
[ 1871.295978] br0: port 1(dummy0) entered disabled state