[ 1779.329521] br0: port 1(dummy0) entered blocking state
[ 1779.329614] br0: port 1(dummy0) entered disabled state
[ 1779.329684] dummy0: entered allmulticast mode
[ 1779.329767] dummy0: entered promiscuous mode
[ 1779.333489] br0: port 1(dummy0) entered blocking state
[ 1779.333523] br0: port 1(dummy0) entered forwarding state
[ 1779.597002] dummy0: left allmulticast mode
[ 1779.597044] dummy0: left promiscuous mode
[ 1779.597124] br0: port 1(dummy0) entered disabled state