[ 1907.161150] br0: port 1(dummy0) entered blocking state
[ 1907.161231] br0: port 1(dummy0) entered disabled state
[ 1907.161301] dummy0: entered allmulticast mode
[ 1907.161392] dummy0: entered promiscuous mode
[ 1907.164890] br0: port 1(dummy0) entered blocking state
[ 1907.164924] br0: port 1(dummy0) entered forwarding state
[ 1907.430793] dummy0: left allmulticast mode
[ 1907.430831] dummy0: left promiscuous mode
[ 1907.430861] br0: port 1(dummy0) entered disabled state