[ 1708.835334] br0: port 1(dummy0) entered blocking state
[ 1708.835379] br0: port 1(dummy0) entered disabled state
[ 1708.835417] dummy0: entered allmulticast mode
[ 1708.835470] dummy0: entered promiscuous mode
[ 1708.838473] br0: port 1(dummy0) entered blocking state
[ 1708.838506] br0: port 1(dummy0) entered forwarding state
[ 1709.051978] dummy0: left allmulticast mode
[ 1709.052015] dummy0: left promiscuous mode
[ 1709.052046] br0: port 1(dummy0) entered disabled state