[ 1803.526677] br0: port 1(dummy0) entered blocking state
[ 1803.526736] br0: port 1(dummy0) entered disabled state
[ 1803.526776] dummy0: entered allmulticast mode
[ 1803.526824] dummy0: entered promiscuous mode
[ 1803.530426] br0: port 1(dummy0) entered blocking state
[ 1803.530468] br0: port 1(dummy0) entered forwarding state
[ 1803.799719] dummy0: left allmulticast mode
[ 1803.799788] dummy0: left promiscuous mode
[ 1803.799852] br0: port 1(dummy0) entered disabled state