[ 1709.364898] br0: port 1(dummy0) entered blocking state
[ 1709.364941] br0: port 1(dummy0) entered disabled state
[ 1709.364971] dummy0: entered allmulticast mode
[ 1709.365018] dummy0: entered promiscuous mode
[ 1709.367508] br0: port 1(dummy0) entered blocking state
[ 1709.367567] br0: port 1(dummy0) entered forwarding state
[ 1709.541920] dummy0: left allmulticast mode
[ 1709.541950] dummy0: left promiscuous mode
[ 1709.541978] br0: port 1(dummy0) entered disabled state