[ 1911.631609] br0: port 1(dummy0) entered blocking state
[ 1911.631683] br0: port 1(dummy0) entered disabled state
[ 1911.631751] dummy0: entered allmulticast mode
[ 1911.631833] dummy0: entered promiscuous mode
[ 1911.635296] br0: port 1(dummy0) entered blocking state
[ 1911.635339] br0: port 1(dummy0) entered forwarding state
[ 1911.881297] dummy0: left allmulticast mode
[ 1911.881339] dummy0: left promiscuous mode
[ 1911.881365] br0: port 1(dummy0) entered disabled state