[ 1881.394968] br0: port 1(dummy0) entered blocking state
[ 1881.395009] br0: port 1(dummy0) entered disabled state
[ 1881.395043] dummy0: entered allmulticast mode
[ 1881.395092] dummy0: entered promiscuous mode
[ 1881.398519] br0: port 1(dummy0) entered blocking state
[ 1881.398583] br0: port 1(dummy0) entered forwarding state
[ 1881.654587] dummy0: left allmulticast mode
[ 1881.654621] dummy0: left promiscuous mode
[ 1881.654654] br0: port 1(dummy0) entered disabled state