[ 1679.198570] br0: port 1(dummy0) entered blocking state
[ 1679.198617] br0: port 1(dummy0) entered disabled state
[ 1679.198650] dummy0: entered allmulticast mode
[ 1679.198707] dummy0: entered promiscuous mode
[ 1679.201170] br0: port 1(dummy0) entered blocking state
[ 1679.201230] br0: port 1(dummy0) entered forwarding state
[ 1679.392063] dummy0: left allmulticast mode
[ 1679.392100] dummy0: left promiscuous mode
[ 1679.392157] br0: port 1(dummy0) entered disabled state