[ 1713.232190] br0: port 1(dummy0) entered blocking state
[ 1713.232274] br0: port 1(dummy0) entered disabled state
[ 1713.232343] dummy0: entered allmulticast mode
[ 1713.232433] dummy0: entered promiscuous mode
[ 1713.236275] br0: port 1(dummy0) entered blocking state
[ 1713.236312] br0: port 1(dummy0) entered forwarding state
[ 1713.523496] dummy0: left allmulticast mode
[ 1713.523571] dummy0: left promiscuous mode
[ 1713.523640] br0: port 1(dummy0) entered disabled state