[ 1712.907982] br0: port 1(dummy0) entered blocking state
[ 1712.908055] br0: port 1(dummy0) entered disabled state
[ 1712.908121] dummy0: entered allmulticast mode
[ 1712.908203] dummy0: entered promiscuous mode
[ 1712.911478] br0: port 1(dummy0) entered blocking state
[ 1712.911512] br0: port 1(dummy0) entered forwarding state
[ 1713.116283] dummy0: left allmulticast mode
[ 1713.116380] dummy0: left promiscuous mode
[ 1713.116445] br0: port 1(dummy0) entered disabled state