[ 1665.204600] br0: port 1(dummy0) entered blocking state
[ 1665.204637] br0: port 1(dummy0) entered disabled state
[ 1665.204670] dummy0: entered allmulticast mode
[ 1665.204724] dummy0: entered promiscuous mode
[ 1665.207143] br0: port 1(dummy0) entered blocking state
[ 1665.207176] br0: port 1(dummy0) entered forwarding state
[ 1665.374573] dummy0: left allmulticast mode
[ 1665.374603] dummy0: left promiscuous mode
[ 1665.374630] br0: port 1(dummy0) entered disabled state