[ 1633.218736] br0: port 1(dummy0) entered blocking state
[ 1633.218782] br0: port 1(dummy0) entered disabled state
[ 1633.218820] dummy0: entered allmulticast mode
[ 1633.218891] dummy0: entered promiscuous mode
[ 1633.221489] br0: port 1(dummy0) entered blocking state
[ 1633.221552] br0: port 1(dummy0) entered forwarding state
[ 1633.417990] dummy0: left allmulticast mode
[ 1633.418022] dummy0: left promiscuous mode
[ 1633.418083] br0: port 1(dummy0) entered disabled state