[ 1724.840614] br0: port 1(dummy0) entered blocking state
[ 1724.840688] br0: port 1(dummy0) entered disabled state
[ 1724.840751] dummy0: entered allmulticast mode
[ 1724.840835] dummy0: entered promiscuous mode
[ 1724.843287] br0: port 1(dummy0) entered blocking state
[ 1724.843322] br0: port 1(dummy0) entered forwarding state
[ 1725.022738] dummy0: left allmulticast mode
[ 1725.022803] dummy0: left promiscuous mode
[ 1725.022867] br0: port 1(dummy0) entered disabled state