[ 1705.513372] br0: port 1(dummy0) entered blocking state
[ 1705.513414] br0: port 1(dummy0) entered disabled state
[ 1705.513452] dummy0: entered allmulticast mode
[ 1705.513514] dummy0: entered promiscuous mode
[ 1705.516785] br0: port 1(dummy0) entered blocking state
[ 1705.516816] br0: port 1(dummy0) entered forwarding state
[ 1705.750786] dummy0: left allmulticast mode
[ 1705.750820] dummy0: left promiscuous mode
[ 1705.750858] br0: port 1(dummy0) entered disabled state