[ 1847.695081] br0: port 1(dummy0) entered blocking state
[ 1847.695152] br0: port 1(dummy0) entered disabled state
[ 1847.695219] dummy0: entered allmulticast mode
[ 1847.695302] dummy0: entered promiscuous mode
[ 1847.698971] br0: port 1(dummy0) entered blocking state
[ 1847.699006] br0: port 1(dummy0) entered forwarding state
[ 1847.974827] dummy0: left allmulticast mode
[ 1847.974863] dummy0: left promiscuous mode
[ 1847.974917] br0: port 1(dummy0) entered disabled state