[ 1669.449721] br0: port 1(dummy0) entered blocking state
[ 1669.449757] br0: port 1(dummy0) entered disabled state
[ 1669.449793] dummy0: entered allmulticast mode
[ 1669.449844] dummy0: entered promiscuous mode
[ 1669.453106] br0: port 1(dummy0) entered blocking state
[ 1669.453175] br0: port 1(dummy0) entered forwarding state
[ 1669.673189] dummy0: left allmulticast mode
[ 1669.673218] dummy0: left promiscuous mode
[ 1669.673246] br0: port 1(dummy0) entered disabled state