[ 1683.796611] br0: port 1(dummy0) entered blocking state
[ 1683.796679] br0: port 1(dummy0) entered disabled state
[ 1683.796746] dummy0: entered allmulticast mode
[ 1683.796849] dummy0: entered promiscuous mode
[ 1683.799767] br0: port 1(dummy0) entered blocking state
[ 1683.799800] br0: port 1(dummy0) entered forwarding state
[ 1683.987877] dummy0: left allmulticast mode
[ 1683.987968] dummy0: left promiscuous mode
[ 1683.988030] br0: port 1(dummy0) entered disabled state