[ 1929.364640] br0: port 1(dummy0) entered blocking state
[ 1929.364711] br0: port 1(dummy0) entered disabled state
[ 1929.364763] dummy0: entered allmulticast mode
[ 1929.364838] dummy0: entered promiscuous mode
[ 1929.368417] br0: port 1(dummy0) entered blocking state
[ 1929.368441] br0: port 1(dummy0) entered forwarding state
[ 1929.630101] dummy0: left allmulticast mode
[ 1929.630139] dummy0: left promiscuous mode
[ 1929.630160] br0: port 1(dummy0) entered disabled state