[ 1774.743999] br0: port 1(dummy0) entered blocking state
[ 1774.744028] br0: port 1(dummy0) entered disabled state
[ 1774.744051] dummy0: entered allmulticast mode
[ 1774.744089] dummy0: entered promiscuous mode
[ 1774.747449] br0: port 1(dummy0) entered blocking state
[ 1774.747469] br0: port 1(dummy0) entered forwarding state
[ 1774.993591] dummy0: left allmulticast mode
[ 1774.993622] dummy0: left promiscuous mode
[ 1774.993640] br0: port 1(dummy0) entered disabled state