[ 1872.276973] br0: port 1(dummy0) entered blocking state
[ 1872.277031] br0: port 1(dummy0) entered disabled state
[ 1872.277082] dummy0: entered allmulticast mode
[ 1872.277154] dummy0: entered promiscuous mode
[ 1872.280732] br0: port 1(dummy0) entered blocking state
[ 1872.280752] br0: port 1(dummy0) entered forwarding state
[ 1872.531892] dummy0: left allmulticast mode
[ 1872.531923] dummy0: left promiscuous mode
[ 1872.531974] br0: port 1(dummy0) entered disabled state