[ 1778.009585] br0: port 1(dummy0) entered blocking state
[ 1778.009658] br0: port 1(dummy0) entered disabled state
[ 1778.009729] dummy0: entered allmulticast mode
[ 1778.009814] dummy0: entered promiscuous mode
[ 1778.012654] br0: port 1(dummy0) entered blocking state
[ 1778.012689] br0: port 1(dummy0) entered forwarding state
[ 1778.190392] dummy0: left allmulticast mode
[ 1778.190458] dummy0: left promiscuous mode
[ 1778.190545] br0: port 1(dummy0) entered disabled state