[ 2307.203365] br0: port 1(dummy0) entered blocking state
[ 2307.208536] br0: port 1(dummy0) entered disabled state
[ 2307.214480] device dummy0 entered promiscuous mode
[ 2307.284686] br0: port 1(dummy0) entered blocking state
[ 2307.289826] br0: port 1(dummy0) entered forwarding state
[ 2307.541325] br0: port 1(dummy0) entered disabled state
[ 2307.650871] device dummy0 left promiscuous mode
[ 2307.655456] br0: port 1(dummy0) entered disabled state