[ 1739.327214] br0: port 1(dummy0) entered blocking state
[ 1739.327289] br0: port 1(dummy0) entered disabled state
[ 1739.327357] dummy0: entered allmulticast mode
[ 1739.327450] dummy0: entered promiscuous mode
[ 1739.330257] br0: port 1(dummy0) entered blocking state
[ 1739.330288] br0: port 1(dummy0) entered forwarding state
[ 1739.507991] dummy0: left allmulticast mode
[ 1739.508021] dummy0: left promiscuous mode
[ 1739.508050] br0: port 1(dummy0) entered disabled state