[ 1639.675017] br0: port 1(dummy0) entered blocking state
[ 1639.675089] br0: port 1(dummy0) entered disabled state
[ 1639.675155] dummy0: entered allmulticast mode
[ 1639.675239] dummy0: entered promiscuous mode
[ 1639.678114] br0: port 1(dummy0) entered blocking state
[ 1639.678181] br0: port 1(dummy0) entered forwarding state
[ 1639.877043] dummy0: left allmulticast mode
[ 1639.877074] dummy0: left promiscuous mode
[ 1639.877103] br0: port 1(dummy0) entered disabled state