[ 1705.510609] br0: port 1(dummy0) entered blocking state
[ 1705.510689] br0: port 1(dummy0) entered disabled state
[ 1705.510762] dummy0: entered allmulticast mode
[ 1705.510851] dummy0: entered promiscuous mode
[ 1705.513970] br0: port 1(dummy0) entered blocking state
[ 1705.514005] br0: port 1(dummy0) entered forwarding state
[ 1705.721767] dummy0: left allmulticast mode
[ 1705.721820] dummy0: left promiscuous mode
[ 1705.721859] br0: port 1(dummy0) entered disabled state