[ 1708.398825] br0: port 1(dummy0) entered blocking state
[ 1708.398869] br0: port 1(dummy0) entered disabled state
[ 1708.398905] dummy0: entered allmulticast mode
[ 1708.398959] dummy0: entered promiscuous mode
[ 1708.402214] br0: port 1(dummy0) entered blocking state
[ 1708.402244] br0: port 1(dummy0) entered forwarding state
[ 1708.608298] dummy0: left allmulticast mode
[ 1708.608336] dummy0: left promiscuous mode
[ 1708.608370] br0: port 1(dummy0) entered disabled state