[ 1948.157247] br0: port 1(dummy0) entered blocking state
[ 1948.157300] br0: port 1(dummy0) entered disabled state
[ 1948.157353] dummy0: entered allmulticast mode
[ 1948.157423] dummy0: entered promiscuous mode
[ 1948.161258] br0: port 1(dummy0) entered blocking state
[ 1948.161277] br0: port 1(dummy0) entered forwarding state
[ 1948.397316] dummy0: left allmulticast mode
[ 1948.397334] dummy0: left promiscuous mode
[ 1948.397352] br0: port 1(dummy0) entered disabled state