[ 2529.993801] br0: port 1(dummy0) entered blocking state
[ 2529.993810] br0: port 1(dummy0) entered disabled state
[ 2529.993900] device dummy0 entered promiscuous mode
[ 2530.019320] br0: port 1(dummy0) entered blocking state
[ 2530.019324] br0: port 1(dummy0) entered forwarding state
[ 2530.113455] br0: port 1(dummy0) entered disabled state
[ 2530.156462] device dummy0 left promiscuous mode
[ 2530.156482] br0: port 1(dummy0) entered disabled state