[ 1892.499379] br0: port 1(dummy0) entered blocking state
[ 1892.499459] br0: port 1(dummy0) entered disabled state
[ 1892.499538] dummy0: entered allmulticast mode
[ 1892.499639] dummy0: entered promiscuous mode
[ 1892.503573] br0: port 1(dummy0) entered blocking state
[ 1892.503611] br0: port 1(dummy0) entered forwarding state
[ 1892.769408] dummy0: left allmulticast mode
[ 1892.769451] dummy0: left promiscuous mode
[ 1892.769494] br0: port 1(dummy0) entered disabled state