[ 1896.662113] br0: port 1(dummy0) entered blocking state
[ 1896.662153] br0: port 1(dummy0) entered disabled state
[ 1896.662184] dummy0: entered allmulticast mode
[ 1896.662240] dummy0: entered promiscuous mode
[ 1896.665677] br0: port 1(dummy0) entered blocking state
[ 1896.665743] br0: port 1(dummy0) entered forwarding state
[ 1896.926319] dummy0: left allmulticast mode
[ 1896.926350] dummy0: left promiscuous mode
[ 1896.926377] br0: port 1(dummy0) entered disabled state