[ 1806.403392] br0: port 1(dummy0) entered blocking state
[ 1806.403471] br0: port 1(dummy0) entered disabled state
[ 1806.403541] dummy0: entered allmulticast mode
[ 1806.403632] dummy0: entered promiscuous mode
[ 1806.407167] br0: port 1(dummy0) entered blocking state
[ 1806.407201] br0: port 1(dummy0) entered forwarding state
[ 1806.666940] dummy0: left allmulticast mode
[ 1806.666982] dummy0: left promiscuous mode
[ 1806.667016] br0: port 1(dummy0) entered disabled state