[ 1759.232466] br0: port 1(dummy0) entered blocking state
[ 1759.232499] br0: port 1(dummy0) entered disabled state
[ 1759.232519] dummy0: entered allmulticast mode
[ 1759.232558] dummy0: entered promiscuous mode
[ 1759.235703] br0: port 1(dummy0) entered blocking state
[ 1759.235724] br0: port 1(dummy0) entered forwarding state
[ 1759.437496] dummy0: left allmulticast mode
[ 1759.437525] dummy0: left promiscuous mode
[ 1759.437544] br0: port 1(dummy0) entered disabled state